Custom FFMPEG: Timecode Burn-In

[filmeschneider]

Hi all,


I'm trying to create using the Custom FFMPEG. (I got it to work via A/V Media -> Timecode -> H.264, but the Custom FFMPEG runs at 8-10x realtime, while this chain runs at 1.8x RT and time is a factor.)

My current Custom FFMPEG line is:

Code: Select all

-filter_complex "[0:1][0:2] amerge" -preset ultrafast -vf scale=960:540:in_range=tv:out_range=pc,"drawtext=\timecode='00\:00\:00\:00':timecode_rate=25:x=(w-tw)/2:y=h-(2*lh):fontcolor=white@1:fontsize=30:box=1:boxcolor=black@0.6" -c:v libx264 -pix_fmt yuv420p -crf 27 -c:a aac -ar 48000 -b:a 128k

This of course starts the Burn-In at 00:00:00:00, but I'd rather insert the file's TC:

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Other #1
ID                                       : 1-Material
Type                                     : Time code
Format                                   : MXF TC
Frame rate                               : 25.000 FPS
Time code of first frame                 : 10:00:00:00
Time code of last frame                  : 10:02:34:20
Time code settings                       : Material Package
Time code, stripped                      : Yes
Title                                    : Timecode

Other #2
ID                                       : 0-Source
Type                                     : Time code
Format                                   : MXF TC
Frame rate                               : 25.000 FPS
Time code of first frame                 : 10:00:00:00
Time code of last frame                  : 10:02:34:20
Time code settings                       : Source Package
Time code, stripped                      : Yes

Other #3
Type                                     : Time code
Format                                   : SMPTE TC
Muxing mode                              : SDTI
Frame rate                               : 25.000 FPS
Time code of first frame                 : 10:00:00:00

I have not found a way to make FFMPEG read the TC and use it for the Burn-In. Do any of you guys know how to accomplish this?

Thanks and sorry if this question is not valid on this forum (it's more FFMPEG than FFASTrans really). Feel free to delete this post.


Regards
Christian

[ThomasM]

Hi Christian,

welcome to the forum and thanks for using FFAStrans!

You can make use of the MediaProperties-Variables:

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timecode='%i_stc_hh%\:%i_stc_mm%\:%i_stc_ss%\:%i_stc_ff%'

Also have a look at the documentation: https://ffastrans.com/wiki/doku.php?id= ... _variables

cheers,
Thomas

[emcodem]

Hey filmeschneider,

wilkommen im forum und danke dass du FFAStrans verwendest
If i remember correctly and nothing yet changed, ffmpeg does not have an inbuilt option for this. Users have to analyze the timecode first and then use the values for the drawtext timecode filter.

Luckily, ffastrans has easy access inbuilt variables ready to use for us:

Code: Select all

-filter_complex "[0:1][0:2] amerge" -preset ultrafast -vf scale=960:540:in_range=tv:out_range=pc,"drawtext=\timecode='%i_stc_hh%\:%i_stc_mm%\:%i_stc_ss%\:%i_stc_ff%':timecode_rate=25:x=(w-tw)/2:y=h-(2*lh):fontcolor=white@1:fontsize=30:box=1:boxcolor=black@0.6" -c:v libx264 -pix_fmt yuv420p -crf 27 -c:a aac -ar 48000 -b:a 128k

[emcodem]

omg, 1 thread, 3 germans...

[filmeschneider]

It works! Awesome! Thanks everyone, vielen, vielen Dank

FFAStrans never ceases to amaze me.


Best
Christian