On Tue, Aug 06, 2019 at 10:07:40 +0200, Paul B Mahol wrote: > If I understand correctly, basically need hash of each stream separately > (for framehash this already works). > > That is quite possible to be implemented. Feel free to open feature request > on FFmpeg bug tracker.
Just to show that it works, I have hacked up a quick proof of concept. (Hacked up means: Possibly not clean, not enough reuse of code, ...) From this for a video stream: ./ffmpeg_g -f lavfi -i testsrc -map 0 -t 1 -f hash - [...] SHA256=c747429bf5d240958db9545b184e2b226f826e67495ad5d46245794bc1b84078 and this for an audio stream: ./ffmpeg_g -f lavfi -i anoisesrc=seed=0 -map 0 -t 1 -f hash - [...] SHA256=4a3aa64bd7ef86ff2afb43c9346076792497cdcfcd741f10a1bea2e016294417 I can now produce this (note the new muxer): ./ffmpeg_g -f lavfi -i testsrc -f lavfi -i anoisesrc=seed=0 -map 0 -map 1 -t 1 -f streamhash - SHA256=c747429bf5d240958db9545b184e2b226f826e67495ad5d46245794bc1b84078 SHA256=4a3aa64bd7ef86ff2afb43c9346076792497cdcfcd741f10a1bea2e016294417 I just couldn't quickly figure out how to prefix the stream specifiers (e.g. 0:0, 0:1). I'm not hapy with submitting a hack as a patch to ffmpeg-devel though. ;-) But I can provide the patch here or somewhere else. Cheers, Moritz _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
