I followed your advice and recompiled ffmpeg with libx264 and, indeed, this version corresponding to the commit 155508c6e9 generated a correct file.
Thanks ! > On 25 Oct 2019, at 11:35, Moritz Barsnick <[email protected]> wrote: > > On Fri, Oct 25, 2019 at 10:59:27 +0200, MailingLists - XYZ via ffmpeg-user > wrote: >> ffmpeg -f image2 -r 5 -pattern_type glob -i '*[0-9].jpg' -vf >> "scale=1620:1080,format=yuv420p" -vcodec libx264 final.mp4 > > "-framerate" is preferred over "-r". > >> Starting around the 8000th picture, ffmpeg started dropping frames and the >> behaviour continued up until the end of the file. > > You should show us the complete, uncut console output of your command. > >> My question is : how could I ask ffmpeg to not be bothered by the >> pictures resolution changes and scale them according to the output >> dimension, 1620:1080, even though input images might be smaller than >> that ? > > The command should be correct to achieve that. > >> Following advice on Stack Overflow, I tried to modify the output >> scale with "scale=1620:-2” instead of "scale=1620:1080” but nothing >> changed, frames continued to be dropped… > > Well, that's stupid advice, as 1080 is already divisible by 2. > >> (I’m using ffmpeg 3.2.14 and I haven’t tried a newer version) > > That's certainly not sufficient. What if this was fixed in the > meantime? Kindly grab a newer version. E.g. for Linux, this site > provides static builds: > https://johnvansickle.com/ffmpeg/ > (Left column, "git master", please.) > > Please do try that first, and come back with the results (including the > console output). > > Thanks, > 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". _______________________________________________ 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".
