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This shows you the differences between two versions of the page.

--- mpeg2:mpeg2_elementary_stream_structure [2022/05/10 17:55] – emcodem
+++ mpeg2:mpeg2_elementary_stream_structure [2022/05/10 20:01] (current) – emcodem
@@ Line 1: / Line 1: @@
 <html>
-<h1>MPEG-2 Elementary Video</h1>
+<!-- this is the global style for html elements on this page -->
+<style type="text/css">
+/* Tabelle mit Standardwerten */
+#sheme
+{  border : 1px solid #4088b8; padding : 0px; margin : 10px 0px 18px 0px; font-size : 12px; background-color : #f4f4f4; }
+#sheme th
+{ vertical-align : top; padding : 5px; border : 1px dotted #4088b8; font-size : 90%; }
+#sheme td
+{ vertical-align : top; padding : 5px; border : 1px dotted #4088b8; font-size : 90%; }
+/* Tabelle für Bytedarstellungen */
+#byte
+{ width : 800px; border : 1px solid  #4088b8; padding : 0px; margin : 10px 0px 18px 0px;  color : #4088b8; background-color : #ecf3f8; font-size : 12px; font-weight : normal; }
+#byte th
+{ width :  93px; border : 1px dotted #4088b8; padding : 4px; text-align : center; vertical-align : middle; font-weight : bold; line-height: 1.5em; }
+#byte td
+{ width :  93px; border : 1px dotted #4088b8; padding : 4px; text-align : center; vertical-align : middle; line-height: 1.5em; }
+#byte td:nth-child(1)
+{ width :  56px; font-weight : bold; }
+</style>
+</html>
-</html>
+===== MPEG-2 Elementary Video =====
   - stream structure
   - Sequence headers
@@ Line 19: / Line 39: @@
 The structure differs from that of MPEG-1 elementary video in terms of the possible extensions and, in the case of the TMPG encoder, the number of slices.
+==== Structure of an MPEG-2 program stream. ====
 <html>
-<div id="Inhalt">
-    <h3><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">MPEG-2 Elementary Video</font></font></h3>
-    <h1><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">stream structure</font></font></h1>
+    <table id="byte">
-    <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Structure of an MPEG-2 program stream.</font></font></p>
-    <p>&nbsp;</p>
-    <h3><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">video streaming:</font></font></h3>
-    <table class="newTab">
      <tbody>
       <tr height="40">
@@ Line 41: / Line 57: @@
     <p>&nbsp;</p>
     <h3><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Sequence:</font></font></h3>
-    <table class="newTab">
+    <table id="byte">
      <tbody>
       <tr height="40">
@@ Line 58: / Line 74: @@
     <p>&nbsp;</p>
     <h3><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Group of Picture (GOP):</font></font></h3>
-    <table class="newTab">
+    <table id="byte">
      <tbody>
       <tr height="40">
@@ Line 74: / Line 91: @@
     <p>&nbsp;</p>
     <h3><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Picture:</font></font></h3>
-    <table class="newTab">
+    <table id="byte">
      <tbody>
       <tr height="40">
@@ Line 90: / Line 107: @@
     <p>&nbsp;</p>
     <h3><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Slice:</font></font></h3>
-    <table class="newTab">
+    <table id="byte">
      <tbody>
       <tr height="40">
@@ Line 105: / Line 122: @@
     <p>&nbsp;</p>
     <h3><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">macro block:</font></font></h3>
-    <table class="newTab">
+    <table id="byte">
      <tbody>
       <tr height="40">
@@ Line 121: / Line 138: @@
     <p>&nbsp;<br><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">A macroblock comprises an image section with a total of 16x16 picture elements (pixels). </font><font style="vertical-align: inherit;">It stores the YUV 4:2:0 (YCbCr) color information. </font><font style="vertical-align: inherit;">The Y components of all pixels are contained in the first four blocks b0 to b3. </font><font style="vertical-align: inherit;">In the fifth block b4, the blue chrominance values &ZeroWidthSpace;&ZeroWidthSpace;(Cb) are stored in one point for each 4 pixels. </font><font style="vertical-align: inherit;">The corresponding red chrominance values &ZeroWidthSpace;&ZeroWidthSpace;(Cr) are in the sixth block b5.</font></font></p>
-   </div>
+</html>
+===== Sequence headers =====
+Each header starts with the PACK_START_CODE_PREFIX, which consists of the three bytes 0, 0 and 1. As a hexadecimal number, it is represented as $000001. This is followed by the ID. For the sequence header, this is the value $B3. The length of the header has different lengths according to the matrices used.
-</html>
+Each sequence header represents a possible entry point. This means that a chapter can only be created where there is a sequence header.
+It should also happen that sequence headers are not marked with $000001B3 but with $000000B3.
+== Construction ==
+  - 4 bytes: SEQUENCE_HEADER_CODE = $000001B3
+  - 12 Bit: Width - Image width in pixels
+  - 12 Bit: Height - image height in pixels
+  - 4 bit: Aspect Ratio - aspect ratio
+  - 4 bit: frame rate - refresh rate
+  - 18 bit: bit rate
+  - 1 bit: markers
+  - 10 bits: VBV
+  - 1 bit: Constrained parameter flag
+  - 1 bit: load intra matrix (0) or standard (1)?
+  - 64 bytes: Intra matrix if non-standard matrix is used.
+  - 1 Bit: Load Non Intra Matrix (0) or Standard (1)?
+  - 64 bytes: Non Intra Matrix, unless Standard Matrix is used.
+As a scheme:
 <html>
 <div id="Inhalt">
-    <h3><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">MPEG-2 Elementary Video</font></font></h3>
+    <table id="byte">
-    <h1><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Sequence headers</font></font></h1>
-    <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Each header starts with the PACK_START_CODE_PREFIX, which consists of the three bytes 0, 0 and 1. </font><font style="vertical-align: inherit;">As a hexadecimal number, it is represented as $000001. </font><font style="vertical-align: inherit;">This is followed by the ID. </font><font style="vertical-align: inherit;">For the sequence header, this is the value $B3. </font><font style="vertical-align: inherit;">The length of the header has different lengths according to the matrices used.</font></font></p>
-    <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Each sequence header represents a possible entry point. This means that a chapter can only be created where there is a sequence header. </font><font style="vertical-align: inherit;"> </font></font><font style="vertical-align: inherit;"><font style="vertical-align: inherit;"> </font></font></p>
-    <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">It should also happen that sequence headers are not marked with $000001B3 but with $000000B3.</font></font></p>
-    <h2><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Construction</font></font></h2>
-    <ol type="circle">
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bytes: SEQUENCE_HEADER_CODE = $000001B3</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">12 Bit: Width - Image width in pixels</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">12 Bit: Height - image height in pixels</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bit: Aspect Ratio - aspect ratio</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bit: frame rate - refresh rate</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">18 bit: bit rate</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: markers</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">10 bits: VBV</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Constrained parameter flag</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: load intra matrix (0) or standard (1)?</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">64 bytes: Intra matrix if non-standard matrix is &ZeroWidthSpace;&ZeroWidthSpace;used.</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 Bit: Load Non Intra Matrix (0) or Standard (1)?</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">64 bytes: Non Intra Matrix, unless Standard Matrix is &ZeroWidthSpace;&ZeroWidthSpace;used.</font></font></li>
-    </ol>
-    <h3><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">As a scheme:</font></font></h3>
-    <table class="newTab">
      <tbody>
       <tr height="26" valign="middle" align="center">
@@ Line 250: / Line 263: @@
     <h2><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Explanations</font></font></h2>
     <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">The values &ZeroWidthSpace;&ZeroWidthSpace;for the aspect ratio:</font></font></p>
-    <table class="Tab">
+    <table id="sheme">
      <tbody>
       <tr height="30">
@@ Line 284: / Line 297: @@
     <p>&nbsp;</p>
     <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">The values &ZeroWidthSpace;&ZeroWidthSpace;for the frame rate (refresh rate):</font></font></p>
-    <table class="Tab">
+    <table id="sheme">
      <tbody>
       <tr height="20">
@@ Line 343: / Line 356: @@
      </tbody>
     </table>
-    <p>&nbsp;</p>
-    <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">The bit rate is given in 400 bits per second. </font><font style="vertical-align: inherit;">The value $3FFFF is supposed to mean a variable bitrate. </font><font style="vertical-align: inherit;">In the test, TMPGEnc and CCEB each indicated the maximum bit rate there.</font></font></p>
-    <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">The marker bit is intended to detect errors. </font><font style="vertical-align: inherit;">It must always have the value 1.</font></font></p>
-    <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">The VBV is the memory required to decode the images. </font><font style="vertical-align: inherit;">It is specified in 16 kB blocks.</font></font></p>
-    <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">The constrained parameter flag is always set to 0 here. </font><font style="vertical-align: inherit;">The TMPG Encoder 2.5* uses the 10 bits for the VBV and the bit of the constrained parameter flag for the VBV specification, so that only half of the VBV is displayed here.</font></font></p>
-    <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">The intra or non intra matrix load bit indicates whether the standard matrix is &ZeroWidthSpace;&ZeroWidthSpace;used or whether the corresponding matrix is &ZeroWidthSpace;&ZeroWidthSpace;saved at this point and must be loaded. </font><font style="vertical-align: inherit;">The matrix is &ZeroWidthSpace;&ZeroWidthSpace;stored in Zig Zag Scan.</font></font></p>
-    <p>&nbsp;</p>
-    <h1><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">extensions</font></font></h1>
-    <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">At least one extension follows the sequence header. </font><font style="vertical-align: inherit;">An MPEG-2 is identified via this. </font><font style="vertical-align: inherit;">The ID of the extension is $B5. </font><font style="vertical-align: inherit;">This is followed by the ID of the extension. </font><font style="vertical-align: inherit;">These extensions should be considered for the sequence header:</font></font></p>
    </div>
 </html>
+The bit rate is given in 400 bits per second. The value $3FFFF is supposed to mean a variable bitrate. In the test, TMPGEnc and CCEB each indicated the maximum bit rate there.
+The marker bit is intended to detect errors. It must always have the value 1.
+The VBV is the memory required to decode the images. It is specified in 16 kB blocks.
+The constrained parameter flag is always set to 0 here. The TMPG Encoder 2.5* uses the 10 bits for the VBV and the bit of the constrained parameter flag for the VBV specification, so that only half of the VBV is displayed here.
+The intra or non intra matrix load bit indicates whether the standard matrix is used or whether the corresponding matrix is saved at this point and must be loaded. The matrix is stored in Zig Zag Scan.
+===== extensions =====
+At least one extension follows the sequence header. An MPEG-2 is identified via this. The ID of the extension is $B5. This is followed by the ID of the extension. These extensions should be considered for the sequence header:
   - Sequence Extension
   - Sequence Display Extension
@@ Line 363: / Line 383: @@
   - Sequence Scalable Extension
+===== Sequence Extension =====
+Extensions have the ID $B5. This is followed by the ID of the extension, here $1.
+== Construction ==
+  - 4 bytes: EXTENSION_START_CODE = $000001B5
+  - 4 bits: Start Code Identifier - Sequence Extension = $1
+  - 4 bit: profile
+  - 4 bits: levels
+  - 1 bit: progressive sequence
+  - 2-bit: chroma format
+  - 2 bit: wide extension
+  - 2 bits: height extension
+  - 12-bit: bit rate extension
+  - 1 bit: markers
+  - 8-bit: VBV Buffer Extension
+  - 1 bit: low delay
+  - 2 bits: Frame rate extension numerator
+  - 5 bits: Frame rate extension denominator
+As a scheme:
 <html>
 <div id="Inhalt">
-    <h3><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">MPEG-2 Elementary Video</font></font></h3>
+    <table id="byte">
-    <h1><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Sequence Extension</font></font></h1>
-    <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Extensions have the ID $B5. </font><font style="vertical-align: inherit;">This is followed by the ID of the extension, here $1.</font></font></p>
-    <h2><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Construction</font></font></h2>
-    <ol type="circle">
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bytes: EXTENSION_START_CODE = $000001B5</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bits: Start Code Identifier - Sequence Extension = $1</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bit: profile</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bits: levels</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: progressive sequence</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">2-bit: chroma format</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">2 bit: wide extension</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">2 bits: height extension</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">12-bit: bit rate extension</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: markers</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">8-bit: VBV Buffer Extension</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: low delay</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">2 bits: Frame rate extension numerator</font></font></li>
-     <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">5 bits: Frame rate extension denominator</font></font></li>
-    </ol>
-    <h3><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">As a scheme:</font></font></h3>
-    <table class="newTab">
      <tbody>
       <tr height="26" valign="middle" align="center">
@@ Line 452: / Line 473: @@
     <h2><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Explanations</font></font></h2>
     <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">The profiles are:</font></font></p>
-    <table class="Tab">
+    <table id="sheme">
      <tbody>
       <tr height="20">
@@ Line 489: / Line 510: @@
     <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">The profiles Multiview and 4:2:2 are sometimes also specified, but without coding.</font></font></p>
     <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">The levels are:</font></font></p>
-    <table class="Tab">
+    <table id="sheme">
      <tbody>
       <tr height="20">
@@ Line 520: / Line 541: @@
     <p>&nbsp;</p>
     <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Allowed combinations of level and profile:</font></font></p>
-    <table class="Tab">
+    <table id="sheme">
      <tbody>
       <tr align="center">
@@ Line 576: / Line 597: @@
     <p>&nbsp;</p>
     <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">The chrominance values:</font></font></p>
-    <table class="tab">
+    <table id="sheme">
      <tbody>
       <tr height="20">
@@ Line 603: / Line 624: @@
     <p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Low Delay means that no B-frames are used. </font><font style="vertical-align: inherit;">"Frame reordering delay is not present i the VBV description, skipped pictures (VBV underflow) may occur." </font><font style="vertical-align: inherit;">The Framerate Extension Numerator and Denominator are multiplied by the base framerate.</font></font></p>
     <p>&nbsp;</p>
+</div>
-    </div>
-   </div>
 </html>
+===== Sequence Display Extension =====
+Extensionen are ID $B5. The ID is $2.
+== Construction ==
+Byte: EXTENSION_START_CODE = $000001B5
+Bit: Start Code Identifier - Sequence Display Extension = $2
+Bit: Video Format
+Bit: Color, if set:
+  - 1 Byte: Color Primaries
+  - 1 Byte: Transfer Characteristics
+  - 1 Byte: Matrix Coefficients
+Bit: Display Width
+Bit: Marker
+Bit: Display Height
+As a scheme:
  <html>
+    <table id="byte">
-    <h3>MPEG-2 Elementar Video</h3>
-    <h1>Sequence Display Extension</h1>
-    <p>Extensionen are ID $B5. The ID is $2.</p>
-    <h2>Aufbau</h2>
-    <ol type="circle">
-     <li>4 Byte: EXTENSION_START_CODE = $000001B5</li>
-     <li>4 Bit: Start Code Identifier - Sequence Display Extension = $2</li>
-     <li>3 Bit: Video Format</li>
-     <li>1 Bit: Color, if set:</li>
-     <ol type="circle">
-      <li>1 Byte: Color Primaries</li>
-      <li>1 Byte: Transfer Characteristics</li>
-      <li>1 Byte: Matrix Coefficients</li>
-     </ol>
-     <li>14 Bit: Display Width</li>
-     <li>1 Bit: Marker</li>
-     <li>14 Bit: Display Height</li>
-    </ol>
-    <h3>Als Schema:</h3>
-    <table class="newTab">
      <tbody>
       <tr height="26" valign="middle" align="center">
        <td id="Col60">&nbsp;</td>
-       <td id="Col60">7</td>
+       <td id="Col00060">7</td>
        <td id="Col60">6</td>
        <td id="Col60">5</td>
@@ Line 701: / Line 725: @@
     <h2>Explainations</h2>
     <p>Video Formats are:</p>
-    <table class="Tab">
+    <table id="sheme">
      <tbody>
       <tr height="20">
@@ Line 735: / Line 759: @@
     <p>&nbsp;</p>
     <p>Color Primaries and Transfer Characteristics are:</p>
-    <table class="Tab">
+    <table id="sheme">
      <tbody>
       <tr height="20">
@@ Line 781: / Line 805: @@
     <p>&nbsp;</p>
     <p>Matrix Coefficients:</p>
-    <table class="Tab">
+    <table id="sheme">
      <tbody>
       <tr height="20">
@@ Line 827: / Line 851: @@
  </html>
-<html>
-<content>
-<h1><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Quant Matrix Extension</font></font></h1>
+===== Quant Matrix Extension =====
-<p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Extensions have the ID $B5. </font><font style="vertical-align: inherit;">The ID of this extension is $3.</font></font></p>
+Extensions have the ID $B5. The ID of this extension is $3.
-<h2><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Construction</font></font></h2>
+== Construction ==
-<ul>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bytes: EXTENSION_START_CODE = $000001B5</font></font></li>
+bytes: EXTENSION_START_CODE = $000001B5
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bits: Start Code Identifier - Quant Matrix Extension = $3</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Load Intra Quantiser Matrix, if 1 then</font></font></li>
+bits: Start Code Identifier - Quant Matrix Extension = $3
-  <ul>
-    <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">64 bytes: intra quantizer matrix</font></font></li>
+bit: Load Intra Quantiser Matrix, if 1 then
-  </ul>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 Bit: Load Non Intra Quantiser Matrix, if 1 then</font></font></li>
+  * 64 bytes: intra quantizer matrix
-  <ul>
-    <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">64 bytes: non-intra quantiser matrix</font></font></li>
+Bit: Load Non Intra Quantiser Matrix, if 1 then
-  </ul>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Load Chroma Intra Quantiser Matrix if 1 then</font></font></li>
+  * 64 bytes: non-intra quantiser matrix
-  <ul>
-    <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">64 bytes: Chroma Intra Quantizer Matrix</font></font></li>
+bit: Load Chroma Intra Quantiser Matrix if 1 then
-  </ul>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Chroma Non Intra Quantiser Matrix, if 1 then</font></font></li>
+  * 64 bytes: Chroma Intra Quantizer Matrix
-  <ul>
-    <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">64 bytes: Chroma Non Intra Quantizer Matrix</font></font></li>
+bit: Chroma Non Intra Quantiser Matrix, if 1 then
-  </ul>
-</ul>
+  * 64 bytes: Chroma Non Intra Quantizer Matrix
+As a scheme:
+<html>
-<h3><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">As a scheme:</font></font></h3>
 <table id="byte">
   <tbody><tr><td>&nbsp;</td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">7</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">6</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">5</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">3</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">2</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">0</font></font></td></tr>
@@ Line 875: / Line 900: @@
-</content>
 </html>
+===== Copyright extension =====
-<html>
+Extensions have the ID $B5. This extension has the ID $4.
-<content>
+== Construction ==
-<h1><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Copyright extension</font></font></h1>
+  * 4 bytes: EXTENSION_START_CODE = $000001B5
+  * 4 bits: Start Code Identifier - Copyright Extension = $4
+  * 1 bit: copyright flag
+  * 8 bits: copyright identifiers
+  * 1 bit: original or copy
+  * 7 bits: Reserved
+  * 1 bit: markers
+  * 20 bit: copyright number 1
+  * 1 bit: markers
+  * 22 bit: copyright number 2
+  * 1 bit: markers
+  * 22 bit: copyright number 3
+<html>
-<p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Extensions have the ID $B5. </font><font style="vertical-align: inherit;">This extension has the ID $4.</font></font></p>
-<h2><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Construction</font></font></h2>
-<ul>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bytes: EXTENSION_START_CODE = $000001B5</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bits: Start Code Identifier - Copyright Extension = $4</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: copyright flag</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">8 bits: copyright identifiers</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: original or copy</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">7 bits: Reserved</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: markers</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">20 bit: copyright number 1</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: markers</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">22 bit: copyright number 2</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: markers</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">22 bit: copyright number 3</font></font></li>
-</ul>
 <h3><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">As a scheme:</font></font></h3>
@@ Line 924: / Line 945: @@
 </tbody></table>
-</content>
 </html>
+===== Sequence Scalable Extension =====
-<html>
+Extensions generally have ID $B5. This extensions has got ID $5.
-<content>
+== Construction ==
-<h1>Sequence Scalable Extension</h1>
+  * 4 Byte: EXTENSION_START_CODE = $000001B5
+  * 4 Bit: Start Code Identifier - Sequence Scalable Extension = $5
+  * 2 Bit: Scalable Mode (Data partioning, Spartial, SNR, Temporal)
+  * 4 Bit: Layer ID
-<p>Extensionen haben die ID $B5. Diese Extension hat die ID $5.</p>
+Ist der Scalable Mode "spatial scalability"
-<h2>Aufbau</h2>
+  * 14 Bit: Lower Layer Prediction Horizontal Size
-<ul>
+  * 1 Bit: Marker
-  <li>4 Byte: EXTENSION_START_CODE = $000001B5</li>
+  * 14 Bit: Lower Layer Prediction Vertical Size
-  <li>4 Bit: Start Code Identifier - Sequence Scalable Extension = $5</li>
+  * 5 Bit: Horizontal Subsampling Factor M
-  <li>2 Bit: Scalable Mode (Data partioning, Spartial, SNR, Temporal)</li>
+  * 5 Bit: Horizontal Subsampling Factor N
-  <li>4 Bit: Layer ID</li>
+  * 5 Bit: Vertical Subsampling Factor M
-</ul>
+  * 5 Bit: Vertical Subsampling Factor N
-<p>Ist der Scalable Mode "spatial scalability"</p>
-<ul>
-  <li>14 Bit: Lower Layer Prediction Horizontal Size</li>
-  <li>1 Bit: Marker</li>
-  <li>14 Bit: Lower Layer Prediction Vertical Size</li>
-  <li>5 Bit: Horizontal Subsampling Factor M</li>
-  <li>5 Bit: Horizontal Subsampling Factor N</li>
-  <li>5 Bit: Vertical Subsampling Factor M</li>
-  <li>5 Bit: Vertical Subsampling Factor N</li>
-</ul>
-<p>Ist der Scalable Mode "temporal scalability"</p>
-<ul>
-  <li>1 Bit: Picture Mux Enable, wenn 1 dann</li>
-  <ul>
-    <li>1 Bit: Mux To Progressive Sequence</li>
-  </ul>
-  <li>3 Bit: Picture Mux Order</li>
-  <li>3 Bit: Picture Mux Factor</li>
-</ul>
-<h3>Als Schema</h3>
+Ist der Scalable Mode "temporal scalability"
+Bit: Picture Mux Enable, if 1 then
+  * 1 Bit: Mux To Progressive Sequence
+Bit: Picture Mux Order
+Bit: Picture Mux Factor
+<html>
+<content>
+<h3><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">As a scheme:</font></font></h3>
 <table id="byte">
   <tbody><tr><td>&nbsp;</td><td>7</td><td>6</td><td>5</td><td>4</td><td>3</td><td>2</td><td>1</td><td>0</td></tr>
@@ Line 973: / Line 992: @@
   <tr><td>3</td></tr>
   <tr><td>4</td><td colspan="4">Start Code Identifier = $5</td><td colspan="2"><font color="red">Scalable Mode</font></td><td colspan="2">Layer ID</td></tr>
-  <tr><td>5</td><td colspan="2">noch Layer ID</td><td colspan="6">&nbsp;</td></tr>
+  <tr><td>5</td><td colspan="2">still Layer ID</td><td colspan="6">&nbsp;</td></tr>
 </tbody></table>
@@ Line 991: / Line 1010: @@
 <table id="byte">
   <tbody><tr><td>&nbsp;</td><td>7</td><td>6</td><td>5</td><td>4</td><td>3</td><td>2</td><td>1</td><td>0</td></tr>
-  <tr><td>5</td><td colspan="2">&nbsp;</td><td><font class="fb">Picture<br>Mux<br>Enable</font></td><td><font class="fr">Mux zu<br>Progr.<br>Sequence</font></td><td colspan="3">Picture Mux Order</td><td>PMF</td></tr>
+  <tr><td>5</td><td colspan="2">&nbsp;</td><td><font class="fb">Picture<br>Mux<br>Enable</font></td><td><font class="fr">Mux to<br>Progr.<br>Sequence</font></td><td colspan="3">Picture Mux Order</td><td>PMF</td></tr>
   <tr><td>6</td><td colspan="2">noch Picture<br>Mux Faktor</td><td colspan="6">&nbsp;</td></tr>
 </tbody></table>
@@ Line 1000: / Line 1019: @@
+===== Group of Pictures =====
-<html>
+The ID $B8 follows the PACK_START_CODE_PREFIX for the GROUP_START_CODE. The length of the header is 4 bytes.
-<content>
-<h1><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Group of Pictures</font></font></h1>
+== Construction ==
-<p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">The ID $B8 follows the PACK_START_CODE_PREFIX for the GROUP_START_CODE. </font><font style="vertical-align: inherit;">The length of the header is 4 bytes.</font></font></p>
+  * 4 bytes: GROUP_START_CODE = $000001B8
+  * 1 bit: drop frame
+  * 5 bit: Time code hours from 0 to 23.
+  * 6 bit: Time code minutes from 0 to 59.
+  * 1 bit: markers
+  * 6 bit: Time Code seconds from 0 to 59.
+  * 6 bit: Time Code Picture from 0 to 59.
+  * 1 bit: Closed GOP
+  * 1 bit: broken link
-<h2><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Construction</font></font></h2>
+As a scheme:
-<ul>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bytes: GROUP_START_CODE = $000001B8</font></font></li>
+<html>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: drop frame</font></font></li>
+<content>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">5 bit: Time code hours from 0 to 23.</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">6 bit: Time code minutes from 0 to 59.</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: markers</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">6 bit: Time Code seconds from 0 to 59.</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">6 bit: Time Code Picture from 0 to 59.</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Closed GOP</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: broken link</font></font></li>
-</ul>
-<h3><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">As a scheme</font></font></h3>
 <table id="byte">
   <tbody><tr><td>&nbsp;</td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">7</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">6</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">5</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">3</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">2</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">0</font></font></td></tr>
@@ Line 1055: / Line 1073: @@
 <h1>Picture Header</h1>
-<p>Dem PACK_START_CODE_PREFIX folgt der PICTURE_START_CODE mit der ID $00.</p>
+<p>PACK_START_CODE_PREFIX follows PICTURE_START_CODE with ID $00.</p>
-<h2>Aufbau</h2>
+<h2>Construction</h2>
 <ul>
   <li>4 Byte: PICTURE_START_CODE = $00000100</li>
@@ Line 1064: / Line 1082: @@
   <li>16 Bit: VBV Delay.</li>
 </ul>
-<p>Nur bei P- und B-Frames:</p>
+<p>P- and B-Frames:</p>
 <ul>
   <li>1 Bit: full fel forward vector</li>
   <li>3 Bit: forward f code</li>
 </ul>
-<p>Nur bei B-Frames:</p>
+<p>B-Frames only:</p>
 <ul>
   <li>1 Bit: full backward vector</li>
   <li>3 Bit: backward f code</li>
 </ul>
-<p>Extra Informationen:</p>
+<p>Extra Information:</p>
 <ul type="circle">
   <li>1 Bit: Extra Info Bit Set</li>
-  <li>1 Byte: Extra Information, wenn Extra Bit gesetzt ist.</li>
+  <li>1 Byte: Extra Information, if Extra Bit is set.</li>
   <li>1 Bit: Extra Info Bit cleared</li>
 </ul>
@@ Line 1097: / Line 1115: @@
 <h2>Erläuterungen</h2>
-<p>Die Temporal Reference ist die Reihenfolge, in welcher die Bilder angezeigt werden sollen. Das erste Bild der Gruppe hat
+<p>The temporal reference is the order in which the images should be displayed. The first picture of the group has
-   den Wert 0.</p>
+   the value 0.</p>
-<p>Die Coding Types sind:</p>
+<p>Coding types:</p>
 <ul start="0">
-  <li>Verboten</li>
+  <li>Resticted</li>
   <li>I - Intra Coded</li>
   <li>P - Predictive Coded</li>
   <li>B - Bidirectionally Predictive Coded</li>
   <li>D - DC Intra Coded</li>
-  <li>Reserviert</li>
+  <li>Reserved</li>
-  <li>Reserviert</li>
+  <li>Reserved</li>
-  <li>Reserviert</li>
+  <li>Reserved</li>
 </ul>
-<p>Das VBV Delay wird bei konstanten Bitraten in 90 kHz Cyclen angegeben. Bei variablen Bitrate wird der Delay auf FFFF gesetzt.</p>
+<p>The VBV delay is specified in 90 kHz cycles at constant bit rates. With variable bit rate, the delay is set to FFFF.
-<p>Zu den forward und backward vectors sowie den Extra Informationen fehlen mir weitergehende Informationen. Die Extra Information
+I am missing further information about the forward and backward vectors and the extra information. The extra information
-   besteht aus neun Bit. Das erste ist der Indikator dafür, ob Extra Informationen folgen. Die folgenden 8 bit stellen die
+   consists of nine bits. The first is the indicator for extra information to follow. The following 8 bits represent the
-   Extra Information dar.</p>
+   extra information.</p>
-<h1>Extensionen</h1>
+<h1>Extensions</h1>
-<p>Bei MPEG-2 schliessen sich dem Picture Header verschiedene Extensionen an. Die ID der Extension ist $B5. Daran schliesst sich
+<p>With MPEG-2, the picture header is followed by various extensions. The ID of the extension is $B5. That concludes
-   die ID der Extension an. Für den Picture Header dürften diese Extensionen in Frage kommen:</p>
+   the ID of the extension. These extensions should be considered for the picture header:</p>
 <ul>
   <li>7 - <a href="projects/mpeg/k010210.htm">Picture Display Extension</a></li>
@@ Line 1132: / Line 1150: @@
 </html>
+===== Picture Display Extension =====
+The extension start code with the ID $B5 is followed by four bits with the extension ID $B7.
+== Construction ==
+  * 4 bytes: EXTENSION_START_CODE = $000001B5
+  * 4 bits: Start Code Identifier - Picture Display Extension = $7
+  * For 0 = i < number_of_frame_centre_offsets (maximum 3 offsets)
+    * 2 bytes (Int16): frame_centre_horizontal_offset
+    * 1 bit: markers
+    * 2 bytes (Int16): frame_centre_vertical_offset
+    * 1 bit: markers
+As a scheme:
@@ Line 1140: / Line 1170: @@
 <content>
-<h1><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Picture Display Extension</font></font></h1>
-<p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">The extension start code with the ID $B5 is followed by four bits with the extension ID $B7.</font></font></p>
-<h2><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Construction</font></font></h2>
-<ul>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bytes: EXTENSION_START_CODE = $000001B5</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bits: Start Code Identifier - Picture Display Extension = $7</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">For 0 = i &lt; number_of_frame_centre_offsets (maximum 3 offsets)
-  </font></font><ul>
-    <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">2 bytes (Int16): frame_centre_horizontal_offset</font></font></li>
-    <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: markers</font></font></li>
-    <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">2 bytes (Int16): frame_centre_vertical_offset</font></font></li>
-    <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: markers</font></font></li>
-  </ul>
-</li></ul>
-<h3><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">As a scheme</font></font></h3>
 <table id="byte">
   <tbody><tr><td>&nbsp;</td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">7</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">6</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">5</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">3</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">2</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">0</font></font></td></tr>
@@ Line 1204: / Line 1216: @@
 </pre>
-<p>Das Flag progressive_sequence ist in der Sequence Extension enthalten. repeat_first_field, top_field_first und picture_structure
+<p>The progressive_sequence flag is included in the sequence extension. repeat_first_field, top_field_first, and picture_structure
-   in der Picture Coding Extension.</p>
+   in the Picture Coding Extension.</p>
-<p>Das Fehlen der Offsets bedeutet, dass die zuvor verwendeten Werte verwendet werden sollen. Das gilt auch, wenn nicht alle
+<p>The absence of the offsets means that the previously used values should be used. That also applies, if not all
-   Offsets angegeben sind. Nach einem Sequence Header werden wieder Nullwerte verwendet, bis wieder Werte angegeben werden.</p>
+   offsets are given. After a sequence header, null values are used again until values are specified again.</p>
-<p>Das Bild unten stammt aus einem Draft zur ISO 13818-2.</p>
-<p align="Center"><img src="/web/20200805111659im_/http://www.fr-an.de/projects/mpeg/p01021002.png"></p>
 </content>
@@ Line 1217: / Line 1227: @@
+===== Picture Coding Extension =====
-<html>
+The extension start code with the ID $B5 is followed by four bits with the extension ID $B8.
-<content>
+== Construction ==
-<h1><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Picture Coding Extension</font></font></h1>
+bytes: EXTENSION_START_CODE = $000001B5
-<p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">The extension start code with the ID $B5 is followed by four bits with the extension ID $B8.</font></font></p>
+bits: Start Code Identifier - Picture Coding Extension = $8
-<h2><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Construction</font></font></h2>
+bits: f_code[0][0] - forward horizontal
-<ul>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bytes: EXTENSION_START_CODE = $000001B5</font></font></li>
+bits: f_code[0][1] - forward vertical
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bits: Start Code Identifier - Picture Coding Extension = $8</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bits: f_code[0][0] - forward horizontal</font></font></li>
+bits: f_code[1][0] - backward horizontal
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bits: f_code[0][1] - forward vertical</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bits: f_code[1][0] - backward horizontal</font></font></li>
+bits: f_code[1][1] - backward vertical
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bits: f_code[1][1] - backward vertical</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">2-bit: Intra DC precision</font></font></li>
+-bit: Intra DC precision
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">2-bit: Picture Structure</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: top field first</font></font></li>
+-bit: Picture Structure
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Frame Pred Frame DCT</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Concealment Motion Vectors</font></font></li>
+bit: top field first
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Q scale type</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Intra VLC format</font></font></li>
+bit: Frame Pred Frame DCT
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: alternate scan</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Repeat First Field</font></font></li>
+bit: Concealment Motion Vectors
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Chroma 420 type</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: progressive frame</font></font></li>
+bit: Q scale type
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Composite Display Flag, if set:</font></font></li>
-  <ul>
+bit: Intra VLC format
-    <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: V axis</font></font></li>
-    <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">3 bits: field sequence</font></font></li>
+bit: alternate scan
-    <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Subcarrier</font></font></li>
-    <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">7 bits: burst amplitude</font></font></li>
+bit: Repeat First Field
-    <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">8 bits: sub-carrier phase</font></font></li>
-  </ul>
+bit: Chroma 420 type
-</ul>
+bit: progressive frame
+bit: Composite Display Flag, if set:
+  * 1 bit: V axis
+  * 3 bits: field sequence
+  * 1 bit: Subcarrier
+  * 7 bits: burst amplitude
+  * 8 bits: sub-carrier phase
+As a scheme:
+<html>
+<content>
-<h3><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">As a scheme</font></font></h3>
 <table id="byte">
   <tbody><tr><td>&nbsp;</td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">7</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">6</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">5</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">3</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">2</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">0</font></font></td></tr>
@@ Line 1282: / Line 1307: @@
 </tbody></table>
-<p><b>Picture Struktur</b></p>
+<p><b>Picture Structure</b></p>
 <table id="sheme">
-  <tbody><tr><th>Wert</th><th>Picture Struktur</th></tr>
+  <tbody><tr><th>Wert</th><th>Picture Structure</th></tr>
   <tr><td>00</td><td>Reserviert</td></tr>
   <tr><td>01</td><td>Top Field - oberes Halbbild</td></tr>
@@ Line 1291: / Line 1316: @@
 </tbody></table>
-<p>Wenn ein Frame in Halbbildern encodet wurde, muss immer ein Paar mit gleichem Picture Coding Type vorliegen.</p>
-<p><b>Top Field First</b><br>Dieses Flag ist von Picture Structure, Progressive Sequence und Repeat First Field abhängig.<br>Bei
+<p>If a frame is encoded in fields, there must always be a pair with the same picture coding type.</p>
-   nicht gesetzten Flag Progressive Sequence dient es beim Decoding der Rekonstruktion des Frames und gibt an, ob das First Field
+<p><b>Top Field First</b><br>This flag depends on Picture Structure, Progressive Sequence and Repeat First Field.<br>At
-   (oberes Halbbild) zuerst ausgegeben wird.<br>Bei gesetzten Flag Progressive Sequence, gibt es in Verbindung mit dem Flag Repeat
+   If the Progressive Sequence flag is not set, it is used during decoding to reconstruct the frame and indicates whether the First Field
-   First Field an, wie oft ein Frame beim Decoding ausgegeben wird. Dies bedeutet, bei Repeat First Field = 0 und Top Field First
+   (upper field) is output first.<br>If the Progressive Sequence flag is set, there is in connection with the Repeat flag
-   = 0 wird ein progressives Frame, bei Repeat First Field = 1 und Top Field First = 0 werden zwei identische progressive Frames
+   First Field indicates how often a frame is output during decoding. This means at Repeat First Field = 0 and Top Field First
-   und bei Repeat First Field = 1 und Top Field First = 1 drei identische progressive Frames ausgegeben.</p>
+   = 0 becomes a progressive frame, with Repeat First Field = 1 and Top Field First = 0 two identical progressive frames become
-<p><b>Frame Pred Frame DCT</b><br>Wenn dieses Flag gesetzt ist, wird nur Frame DCT und Frame Prediction genutzt. Bei Field Picture
+   and with Repeat First Field = 1 and Top Field First = 1, three identical progressive frames are output.</p>
-   (Halbbildern) ist es 0, bei progressiven Frames 1.</p>
+<p><b>Frame Pred Frame DCT</b><br>If this flag is set, only Frame DCT and Frame Prediction will be used. At Field Picture
-<p><b>Concealment Motion Vectors</b><br>Dieses Flag gibt an, ob die Intra Macroblocks mit Motion Vectors encoded wurden.</p>
+   (fields) it is 0, with progressive frames it is 1.</p>
-<p><b>Q Scale Type</b><br>Diesses Flag wird für den Quantiser Scale Factor verwendet.</p>
+<p><b>Concealment Motion Vectors</b><br>This flag indicates whether the intra macroblocks were encoded with motion vectors.</p>
-<p><b>Intra VLC Format</b><br>Dieses Flag wird für die Bestimmung der DCT Koeffizienten verwendet.</p>
+<p><b>Q Scale Type</b><br>This flag is used for the Quantiser Scale Factor.</p>
-<p><b>Alternate Scan</b><br>Dieses Flag wird für die Bestimmung der DCT Koeffizienten verwendet.</p>
+<p><b>Intra VLC format</b><br>This flag is used to determine the DCT coefficients.</p>
-<p><b>Repeat First Field</b><br>Wenn die Flags progressisve_sequence (siehe <a href="projects/mpeg/k010203.htm">Sequence Extension
+<p><b>Alternate Scan</b><br>This flag is used to determine the DCT coefficients.</p>
-   Header</a>) und progressive_frame nicht gesetzt sind, ist das Flag repeat_first_field ebenfalls nicht gesetzt. Beim Decoden wird
+<p><b>Repeat First Field</b><br>If the flags progressisve_sequence (see <a href="projects/mpeg/k010203.htm">Sequence Extension
-   dann das Frame aus zwei Feldern zusammengesetzt. Ist das Flag progressive_sequence nicht aber das Flag progressive_frame gesetzt,
+   Header</a>) and progressive_frame are not set, the repeat_first_field flag is also not set. When decoding
-   wird das Frame aus zwei Feldern zusammengesetzt. Das erste Feld (Top Field oder Bottom Field) wird durch das Flag top_field_first
+   then the frame composed of two fields. If the progressive_sequence flag is not set but the progressive_frame flag is set,
-   identifiziert und wird von dem anderen gefolgt. Ist dann das Flag repeat_first_field gesetzt, wird das Frame aus drei Fields
+   the frame is composed of two fields. The first field (top field or bottom field) is specified by the flag top_field_first
-   zusammengesetzt. Das erste Field wird durch das Flag top_field_first bestimmt und von dem anderen gefolgt. Anschließend wird
+   identified and followed by the other. If the repeat_first_field flag is then set, the frame consists of three fields
-   das erste Field wiederholt. Ist das Flag progressive_sequence gesetzt und das Flag repeat_first_field nicht, wird das Frame
+   composed. The first field is determined by the top_field_first flag and is followed by the other. Then will
-   aus einem Frame decodiert.</p>
+   repeats the first field. If the progressive_sequence flag is set and the repeat_first_field flag is not, the frame
-<p><b>Chroma 420 Type</b><br>Ist genauso gesetzt wie Progressive Frame. Existiert aus historischen Gründen.</p>
+   decoded from a frame.</p>
-<p><b>Progressive Frame</b><br>Ist das Flag nicht gesetzt, bedeutet dies, dass die beiden Fields eines Frame zwei interlaced Fields
-   sind. Repeat First Field muss 0 sein (two field duration). Ist das Flag gesetzt, bedeutet dies, dass die beiden Fields zu einem
-   verschmolzen sind. Picture Structure muss auf "Frame" und Frame Pred Frame DCT auf 1 gesetzt sein.</p>
+<p><b>Chroma 420 Type</b><br>Set the same as Progressive Frame. Exists for historical reasons.</p>
-<p><b>Composite Display Flag</b><br>Dieses Flag ist gesetzt, wenn die Picture, aus denen das MPEG encodet wurde, als (analoges)
+<p><b>Progressive Frame</b><br>If the flag is not set, it means that the two fields of a frame are two interlaced fields
-   Composite Video encodet waren. Die Informationen beziehen sich auf die Exstension folgenden Picture. Handelt es sich um ein
+   are. Repeat First Field must be 0 (two field duration). If the flag is set, this means that the two fields are combined into one
-   Frame Picture, beziehen sich die Informationen auf das First Field. Die Informationen werden für das Second Field angepasst,
+   are merged. Picture Structure must be set to "Frame" and Frame Pred Frame DCT to 1.</p>
-   da diese nicht gespeichert werden können. Die folgenden Elemente werden für das Decoding nicht genutzt. Das Repeat First Field
+<p><b>Composite Display Flag</b><br>This flag is set if the picture from which the MPEG was encoded is (analogue)
-   Flag und das Composite Display Flag dürfen nicht gleichzeitig gesetzt sein.</p>
+   Composite Video were encoded. The information refers to the extension following picture. Is it a
+   Frame Picture, the information relates to the First Field. The information is adjusted for the second field,
+   as these cannot be saved. The following elements are not used for decoding. The Repeat First Field
+   Flag and the Composite Display Flag must not be set at the same time.</p>
 <p><b>V Axis</b><br>1-bit integer used only when the bitstream represents a signal that had previously been encoded according to
    PAL systems. v_axis is set to 1 on a positive sign, v_axis is set to 0 otherwise.</p>
-<p><b>Field Sequence</b><br>Gibt die Nummer des Feldes einer acht Field Sequence bei einem PAL System oder einer fünf Field Sequence
+<p><b>Field Sequence</b><br>Returns the field number of an eight field sequence on a PAL system or a five field sequence
-   bei einem NTSC System entsprechend nachfolgender Tabelle an:</p>
+   for an NTSC system according to the following table:</p>
 <table id="sheme">
   <tbody><tr><th>Field Sequence</th><th>Frame</th><th>Field</th></tr>
@@ Line 1337: / Line 1366: @@
 </tbody></table>
-<p><b>Sub Carrier</b><br>Ist das Flag nicht gesetzt ist das sub-carrier/line frequency relationship korrekt.</p>
-<p><b>Burst Amplitude</b><br>gibt die Burstamplitude für PAL und NTSC an.</p>
+<p><b>Sub Carrier</b><br>If the flag is not set, the sub-carrier/line frequency relationship is correct.</p>
-<p><b>Sub Carrier Phase</b><br>Gibt die Phase des Referenz Sub Carrier der Fieldsynchronisation an.</p>
+<p><b>Burst Amplitude</b><br>specifies the burst amplitude for PAL and NTSC.</p>
+<p><b>Sub Carrier Phase</b><br>Indicates the phase of the reference sub carrier of the field synchronization.</p>
 <table id="sheme">
   <tbody><tr><th>Sub Carrier Phase</th><th>Phase</th></tr>
@@ Line 1355: / Line 1386: @@
+===== Picture Coding Extension =====
+The extension start code with the ID $B5 is followed by four bits with the extension ID $B8.
+== Construction ==
-<html>
+bytes: EXTENSION_START_CODE = $000001B5
-<content>
+bits: Start Code Identifier - Picture Coding Extension = $8
-<h1><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Picture Coding Extension</font></font></h1>
+bits: f_code[0][0] - forward horizontal
-<p><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">The extension start code with the ID $B5 is followed by four bits with the extension ID $B8.</font></font></p>
+bits: f_code[0][1] - forward vertical
-<h2><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">Construction</font></font></h2>
+bits: f_code[1][0] - backward horizontal
-<ul>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bytes: EXTENSION_START_CODE = $000001B5</font></font></li>
+bits: f_code[1][1] - backward vertical
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bits: Start Code Identifier - Picture Coding Extension = $8</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bits: f_code[0][0] - forward horizontal</font></font></li>
+-bit: Intra DC precision
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bits: f_code[0][1] - forward vertical</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bits: f_code[1][0] - backward horizontal</font></font></li>
+-bit: Picture Structure
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4 bits: f_code[1][1] - backward vertical</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">2-bit: Intra DC precision</font></font></li>
+bit: top field first
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">2-bit: Picture Structure</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: top field first</font></font></li>
+bit: Frame Pred Frame DCT
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Frame Pred Frame DCT</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Concealment Motion Vectors</font></font></li>
+bit: Concealment Motion Vectors
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Q scale type</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Intra VLC format</font></font></li>
+bit: Q scale type
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: alternate scan</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Repeat First Field</font></font></li>
+bit: Intra VLC format
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Chroma 420 type</font></font></li>
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: progressive frame</font></font></li>
+bit: alternate scan
-  <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Composite Display Flag, if set:</font></font></li>
-  <ul>
+bit: Repeat First Field
-    <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: V axis</font></font></li>
-    <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">3 bits: field sequence</font></font></li>
+bit: Chroma 420 type
-    <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1 bit: Subcarrier</font></font></li>
-    <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">7 bits: burst amplitude</font></font></li>
+bit: progressive frame
-    <li><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">8 bits: sub-carrier phase</font></font></li>
-  </ul>
+bit: Composite Display Flag, if set:
-</ul>
+  * 1 bit: V axis
+  * 3 bits: field sequence
+  * 1 bit: Subcarrier
+  * 7 bits: burst amplitude
+  * 8 bits: sub-carrier phase
+<html>
+<content>
-<h3><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">As a scheme</font></font></h3>
 <table id="byte">
   <tbody><tr><td>&nbsp;</td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">7</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">6</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">5</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">4</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">3</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">2</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">1</font></font></td><td><font style="vertical-align: inherit;"><font style="vertical-align: inherit;">0</font></font></td></tr>
@@ Line 1422: / Line 1465: @@
 </tbody></table>
-<p><b>Picture Struktur</b></p>
+<p><b>Picture Structure</b></p>
 <table id="sheme">
-  <tbody><tr><th>Wert</th><th>Picture Struktur</th></tr>
+  <tbody><tr><th>Wert</th><th>Picture Structure</th></tr>
   <tr><td>00</td><td>Reserviert</td></tr>
-  <tr><td>01</td><td>Top Field - oberes Halbbild</td></tr>
+  <tr><td>01</td><td>Top Field - upper Field</td></tr>
-  <tr><td>10</td><td>Bottom Field - unteres Halbbild</td></tr>
+  <tr><td>10</td><td>Bottom Field - lower Field</td></tr>
-  <tr><td>11</td><td>Frame Picture - Vollbild</td></tr>
+  <tr><td>11</td><td>Frame Picture - progressive</td></tr>
 </tbody></table>
-<p>Wenn ein Frame in Halbbildern encodet wurde, muss immer ein Paar mit gleichem Picture Coding Type vorliegen.</p>
+<p>If a frame is encoded in fields, there must always be a pair with the same picture coding type.</p>
-<p><b>Top Field First</b><br>Dieses Flag ist von Picture Structure, Progressive Sequence und Repeat First Field abhängig.<br>Bei
+<p><b>Top Field First</b><br>This flag depends on Picture Structure, Progressive Sequence and Repeat First Field.<br>At
-   nicht gesetzten Flag Progressive Sequence dient es beim Decoding der Rekonstruktion des Frames und gibt an, ob das First Field
+   If the Progressive Sequence flag is not set, it is used during decoding to reconstruct the frame and indicates whether the First Field
-   (oberes Halbbild) zuerst ausgegeben wird.<br>Bei gesetzten Flag Progressive Sequence, gibt es in Verbindung mit dem Flag Repeat
+   (upper field) is output first.<br>If the Progressive Sequence flag is set, there is a repeat in connection with the flag
-   First Field an, wie oft ein Frame beim Decoding ausgegeben wird. Dies bedeutet, bei Repeat First Field = 0 und Top Field First
+   First Field indicates how often a frame is output during decoding. This means at Repeat First Field = 0 and Top Field First
-   = 0 wird ein progressives Frame, bei Repeat First Field = 1 und Top Field First = 0 werden zwei identische progressive Frames
+   = 0 becomes a progressive frame, with Repeat First Field = 1 and Top Field First = 0 two identical progressive frames become
-   und bei Repeat First Field = 1 und Top Field First = 1 drei identische progressive Frames ausgegeben.</p>
+   and with Repeat First Field = 1 and Top Field First = 1, three identical progressive frames are output.</p>
-<p><b>Frame Pred Frame DCT</b><br>Wenn dieses Flag gesetzt ist, wird nur Frame DCT und Frame Prediction genutzt. Bei Field Picture
-   (Halbbildern) ist es 0, bei progressiven Frames 1.</p>
+<p><b>Frame Pred Frame DCT</b><br>If this flag is set, only Frame DCT and Frame Prediction will be used. At Field Picture
-<p><b>Concealment Motion Vectors</b><br>Dieses Flag gibt an, ob die Intra Macroblocks mit Motion Vectors encoded wurden.</p>
+   (fields) it is 0, with progressive frames it is 1.</p>
-<p><b>Q Scale Type</b><br>Diesses Flag wird für den Quantiser Scale Factor verwendet.</p>
+<p><b>Concealment Motion Vectors</b><br>This flag indicates whether the intra macroblocks were encoded with motion vectors.</p>
-<p><b>Intra VLC Format</b><br>Dieses Flag wird für die Bestimmung der DCT Koeffizienten verwendet.</p>
+<p><b>Q Scale Type</b><br>This flag is used for the Quantiser Scale Factor.</p>
-<p><b>Alternate Scan</b><br>Dieses Flag wird für die Bestimmung der DCT Koeffizienten verwendet.</p>
+<p><b>Intra VLC format</b><br>This flag is used to determine the DCT coefficients.</p>
-<p><b>Repeat First Field</b><br>Wenn die Flags progressisve_sequence (siehe <a href="projects/mpeg/k010203.htm">Sequence Extension
+<p><b>Alternate Scan</b><br>This flag is used to determine the DCT coefficients.</p>
-   Header</a>) und progressive_frame nicht gesetzt sind, ist das Flag repeat_first_field ebenfalls nicht gesetzt. Beim Decoden wird
+<p><b>Repeat First Field</b>
-   dann das Frame aus zwei Feldern zusammengesetzt. Ist das Flag progressive_sequence nicht aber das Flag progressive_frame gesetzt,
-   wird das Frame aus zwei Feldern zusammengesetzt. Das erste Feld (Top Field oder Bottom Field) wird durch das Flag top_field_first
+<br>If the flags progressisve_sequence (see <a href="projects/mpeg/k010203.htm">Sequence Extension
-   identifiziert und wird von dem anderen gefolgt. Ist dann das Flag repeat_first_field gesetzt, wird das Frame aus drei Fields
+   Header</a>) and progressive_frame are not set, the repeat_first_field flag is also not set. When decoding
-   zusammengesetzt. Das erste Field wird durch das Flag top_field_first bestimmt und von dem anderen gefolgt. Anschließend wird
+   then the frame composed of two fields. If the progressive_sequence flag is not set but the progressive_frame flag is set,
-   das erste Field wiederholt. Ist das Flag progressive_sequence gesetzt und das Flag repeat_first_field nicht, wird das Frame
+   the frame is composed of two fields. The first field (top field or bottom field) is specified by the flag top_field_first
-   aus einem Frame decodiert.</p>
+   identified and followed by the other. If the repeat_first_field flag is then set, the frame consists of three fields
-<p><b>Chroma 420 Type</b><br>Ist genauso gesetzt wie Progressive Frame. Existiert aus historischen Gründen.</p>
+   composed. The first field is determined by the top_field_first flag and is followed by the other. Then will
-<p><b>Progressive Frame</b><br>Ist das Flag nicht gesetzt, bedeutet dies, dass die beiden Fields eines Frame zwei interlaced Fields
+   repeats the first field. If the progressive_sequence flag is set and the repeat_first_field flag is not, the frame
-   sind. Repeat First Field muss 0 sein (two field duration). Ist das Flag gesetzt, bedeutet dies, dass die beiden Fields zu einem
+   decoded from a frame.</p>
-   verschmolzen sind. Picture Structure muss auf "Frame" und Frame Pred Frame DCT auf 1 gesetzt sein.</p>
-<p><b>Composite Display Flag</b><br>Dieses Flag ist gesetzt, wenn die Picture, aus denen das MPEG encodet wurde, als (analoges)
+<p><b>Chroma 420 Type</b><br>Set the same as Progressive Frame. Exists for historical reasons.</p>
-   Composite Video encodet waren. Die Informationen beziehen sich auf die Exstension folgenden Picture. Handelt es sich um ein
+<p><b>Progressive Frame</b><br>If the flag is not set, it means that the two fields of a frame are two interlaced fields
-   Frame Picture, beziehen sich die Informationen auf das First Field. Die Informationen werden für das Second Field angepasst,
+   are. Repeat First Field must be 0 (two field duration). If the flag is set, this means that the two fields are combined into one
-   da diese nicht gespeichert werden können. Die folgenden Elemente werden für das Decoding nicht genutzt. Das Repeat First Field
+   are merged. Picture Structure must be set to "Frame" and Frame Pred Frame DCT to 1.</p>
-   Flag und das Composite Display Flag dürfen nicht gleichzeitig gesetzt sein.</p>
+<p><b>Composite Display Flag</b><br>This flag is set if the picture from which the MPEG was encoded is (analogue)
+   Composite Video were encoded. The information refers to the extension following picture. Is it a
+   Frame Picture, the information relates to the First Field. The information is adjusted for the second field,
+   as these cannot be saved. The following elements are not used for decoding. The Repeat First Field
+   Flag and the Composite Display Flag must not be set at the same time.</p>
 <p><b>V Axis</b><br>1-bit integer used only when the bitstream represents a signal that had previously been encoded according to
    PAL systems. v_axis is set to 1 on a positive sign, v_axis is set to 0 otherwise.</p>
-<p><b>Field Sequence</b><br>Gibt die Nummer des Feldes einer acht Field Sequence bei einem PAL System oder einer fünf Field Sequence
+<p><b>Field Sequence</b><br>Returns the field number of an eight field sequence on a PAL system or a five field sequence
-   bei einem NTSC System entsprechend nachfolgender Tabelle an:</p>
+   for an NTSC system according to the following table:</p>
 <table id="sheme">
   <tbody><tr><th>Field Sequence</th><th>Frame</th><th>Field</th></tr>
@@ Line 1477: / Line 1528: @@
 </tbody></table>
-<p><b>Sub Carrier</b><br>Ist das Flag nicht gesetzt ist das sub-carrier/line frequency relationship korrekt.</p>
-<p><b>Burst Amplitude</b><br>gibt die Burstamplitude für PAL und NTSC an.</p>
+<p><b>Sub Carrier</b><br>If the flag is not set, the sub-carrier/line frequency relationship is correct.</p>
-<p><b>Sub Carrier Phase</b><br>Gibt die Phase des Referenz Sub Carrier der Fieldsynchronisation an.</p>
+<p><b>Burst Amplitude</b><br>specifies the burst amplitude for PAL and NTSC.</p>
+<p><b>Sub Carrier Phase</b><br>Indicates the phase of the reference sub carrier of the field synchronization.</p>
 <table id="sheme">
   <tbody><tr><th>Sub Carrier Phase</th><th>Phase</th></tr>
@@ Line 1489: / Line 1541: @@
 </html>
+===== Macroblock =====
+A macroblock has a size of 16 * 16 pixels. It consists of 4 blocks of 8 * 8 pixels with gray values (Y). These are supplemented by two blocks of 8 * 8 pixels with chrominance values. Chrominance values mean color values. One block for Red (Cr) and one for Blue (Cb).
+  * Addr Incr: number of MBs to skip.
+  * Type: Does this MB use a motion vector? What type?
+  * QScale: How is the quantization table scaled in this MB?
+  * Coded Block Pattern (CBP): bitmap indicating which blocks are coded.