[FFmpeg-user] Framemd5s of file before and after transcode in the one command line
kieran.oleary at irishfilm.ie
Wed Aug 5 15:34:31 CEST 2015
I am hoping to change the Display Aspect Ratio of a series of files (using -aspect 4:3 -c copy) but make framemd5s (or regular md5s of the decoded stream) before and after the aspect ratio change.
I did a test with a h264 transcode, purely to produce a file that would have a different decoded md5.
Here was my command line:
ffmpeg -i Sequence.01.mov -f framemd5 Sequence.01.framemd5 -c:v h264 -c:a copy Sequence.01.mkv -f framemd5 Sequence.01h264.framemd5
It produced identical framemd5s. Is it possible to get ffmpeg to produce a framemd5 of the output file as well?
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