FFAStrans wiki

This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong.
===== Custom Avisynth Filter =====
{{:processors:custom_script_f.png?nolink&130|}}
==== Purpose ====
In most cases when a built in filter is not able to do what you like, you can use a custom avisynth filter to come around this problem.
Look up AVISynth in the internet if you do not know what it is. 

==== Example usage ====


Example Custom Avisynth script for watermark (or burn in image) with inpoint:

<code batch>
m_clip = ConvertTo8Bit(m_clip)
LoadPlugin("%s_ffastrans_dir%\processors\ffmpeg\x64\plugins+\ImageSeq.dll")
m_clip = ConvertToRGB32(m_clip)
watermark = ImageSource("\\storage\path_with_pictures\picture.jpg", start=20, end=m_clip.FrameCount, pixel_type = "rgb32")
watermark_clip = Layer(m_clip, watermark, "add", 257, x=Round(0), y=Round(0))
m_clip = ConditionalFilter(m_clip, watermark_clip, m_clip, "current_frame", ">", "20")
m_clip = ConvertToYUV444(m_clip)
Return m_clip 
</code>


==== For AVISynth script developers ====

Your script must always "return m_clip" at the end. 
The source file is already "loaded" and contained in m_clip.
FFAStrans will automatically add the following lines BEFORE your "custom script" (that you input to the AVISynth processor in the FFAStrans workflow manager)


<code batch>
_ffas_video = "___SOURCEFILE___.mpg"
_ffas_audio = "___SOURCEFILE___.mpg"
_ffas_width = 1280
_ffas_height = 720
_ffas_work_fdr = "___WORKDIR___"
LoadCPlugin("___INSTALLPATH___\processors\AVS_plugins\ffms2\x64\ffms2.dll")
video = FFVideoSource(_ffas_video, 0, cachefile = "___WORKDIR___\1~191226092340598~20356~20191226-0050-4328-3535-e426c93090bc~dec_avmedia~ffindex.dat", seekmode = -1)
audio_null = BlankClip(length=299, width=1280, height=720, color=$000000, channels=1, audio_rate=48000, fps=30)
audio_1 = audio_null
audio_2 = audio_null
.
.
.
audio_32 = audio_null
audio = MergeChannels(audio_1, audio_2, audio_3, audio_4, audio_5, audio_6, audio_7, audio_8, audio_9, audio_10, audio_11, audio_12, audio_13, audio_14, audio_15, audio_16, audio_17, audio_18, audio_19, audio_20, audio_21, audio_22, audio_23, audio_24, audio_25, audio_26, audio_27, audio_28, audio_29, audio_30, audio_31, audio_32)
Global m_clip = AudioDub(video, audio)
m_clip = ConvertToYUV422(m_clip)
m_clip = ConvertBits(m_clip, 8)
m_clip = AssumeFieldBased(m_clip)

___YOUR SCRIPT HERE___
</code>

-------------------
==== Original Manual ====


{{page>original_manual:avs_custom}}