On Mon, Dec 19, 2016 at 11:56:27PM +0100, Nicolas George wrote: > Le nonidi 29 frimaire, an CCXXV, Michael Niedermayer a écrit : > > i dont know if this is a bug or just somethig that by sheer bad luck > > becomes vissible after this but > > ./ffmpeg -i cvid/dday.mov -vframes 30 -vcodec huffyuv -y -acodec pcm_s16le > > out3b.avi ; md5sum out3b.avi > > gives different outputs from time to time > > needs threads on the encoder side, huffyuv, vframes (audio codec irrelevant) > > > > difference in output files looks like this: > > valgrind shows nothing (but difference occurs under valgrind) > > should be here: > > http://samples.ffmpeg.org/V-codecs/CVID/grayscale/dday.mov > > I know there are a few glitches that came through. I have started > working on fixing the worst one, it requires making buffersink aware of > EOF one step earlier. >
> As for this one and the one you posted a few minutes ago: -vframes with > audio frames too is highly dependant on details of the filters > scheduling, and can change slightly under perfectly normal > circumstances, starting with threading. heres another similar issue ./ffmpeg -i ~/tickets/860/jpeg2000.mov -vframes 3 -vcodec huffyuv -y test.avi http://samples.ffmpeg.org/ffmpeg-bugs/trac/ticket860/jpeg2000.mov [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB In fact, the RIAA has been known to suggest that students drop out of college or go to community college in order to be able to afford settlements. -- The RIAA
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