Setting the DAR of a video stream?

[Nicolas Dufresne]

Le jeudi 14 mai 2020 à 10:23 -0400, Alexander Sack a écrit :
> I have a pipeline that crops a video to a resolution (3040x3040) but I noticed
> that
> when I play back the video the DAR is listed as the original native resolution
> of the camera.

DAR is a property of your display HW, we use PAR, or pixel-aspect-ratio= in
caps.
> Is there a way to fix/set the display aspect ratio in the final MKV?
> 
> So the streams leading to the muxer look like this:
> 
> ,, ! video/x-h264, width=(int)3040, height=(int)3040, stream-
> format=(string)byte-stream ! h264parse ! muxer.video_0 ! matroskamux
> name=muxer streamable=true ! filesink name=fsink location=whatevermp4
> 
> I want the DAR to be 1:1 when the video is played back etc.

You can try and add the missing field with a acapssetter element, would be
capssetter caps=video/x-h264,pixel-aspect-ratio=1/1
> 1-aps
> 
> 
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