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ffmpeg transcode twice compress further?
I have a collection of avi videos (say A).
I first convert them into MPEG4 Part2 (say B) using ffmpeg -i ${inname} -vf scale=340:256,setsar=1:1 -q:v 1 -c:v mpeg4 -g 12 -f rawvideo ${outname}. The ...
1
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Extract Y-channel of every I-frame from MPEG4 movie as loslessly as possible
I'm working on a video tracking experiment and got stuck with videos that are quite badly compressed with the MPEG4 DivX 5x/6x codec. I'm fairly new to image formats, codecs and compression, but I ...