On 11/24/2024 8:52 PM, compn wrote:
On Sun, 24 Nov 2024 18:14:03 +0100 Arnaud Masserann <arnaud1...@gmail.com> wrote:Good question. I just benchmarked all the .mov files in the samples repo. On average, there is a 1.3x speedup. A few files are slower, but 75% of the files have at least a 1.11x speedup, and 25% of the files have at least 1.49x. Outliers include openquicktime/aletrek-tga-8bit.mov (0.8x, so slower), and wmv3/Bluem.mov (10.4x). Full data: https://etconlyview-my.sharepoint.com/:x:/g/personal/a_masserann_etc-onlyview_com/EXomK72G3LdJgoBHCgnYcBUBnxd0FAe90nrIkL4EFZKEuw?e=vj3TRl And FATE passes with valgrind, btw.thanks for testing. if the change doesnt break any old files, i have no issue with it slowing the speeds of demuxing on old weird files. more ancient mov samples if you feel like doing more testing. https://samples.ffmpeg.org/A-codecs/MACE/MAC6-mov/ https://samples.ffmpeg.org/A-codecs/QDM2/ https://samples.ffmpeg.org/A-codecs/QDMC/ https://samples.ffmpeg.org/A-codecs/qclp/ https://samples.ffmpeg.org/A-codecs/qtNONE/ https://samples.ffmpeg.org/A-codecs/qtfl32/ https://samples.ffmpeg.org/A-codecs/qtraw/ https://samples.ffmpeg.org/A-codecs/suite/3G2/ https://samples.ffmpeg.org/A-codecs/suite/3GP/ https://samples.ffmpeg.org/A-codecs/uLaw/ https://samples.ffmpeg.org/mobileVideo_3gp/ https://samples.ffmpeg.org/archive/container/mov/ https://samples.ffmpeg.org/V-codecs/SVQ1/ https://samples.ffmpeg.org/V-codecs/SVQ3/ https://samples.ffmpeg.org/V-codecs/QT-qdrw/Airplane.mov https://samples.ffmpeg.org/V-codecs/QTRLE/ https://samples.ffmpeg.org/V-codecs/ZyGo/ https://samples.ffmpeg.org/V-codecs/icod/ https://samples.ffmpeg.org/V-codecs/pxlt-ApplePixlet/ https://samples.ffmpeg.org/MPEG-4/ https://samples.ffmpeg.org/ffmpeg-bugs/trac/ticket4471/spot-day.mj2 probably a good idea to test the rest of the mov formats like psp,m4b,ism,ismv,isma,f4v,avif,heic,heif which i didnt link. especially popular camera photo format heic/heif could do with some tests.
heif/heic/avif can (and most likely will) spawn several streams as a that's how tiled images are handled. So a 4k photo taken from a phone can have about 50 512x512 single frame hevc/av1 streams, which is another argument in favor of having the pools be container level and not stream.
For single stream images, a pool will probably be slightly slower.
full list of samples https://samples.ffmpeg.org/allsamples.txt note that mp4 files are the 2nd most popular format that i see on a daily basis , just behind mkv. with support by default in windows, mac/ios, android and web browsers, mov/mp4 is probably the #1 popular format in the world currently. testing and speeding up our mov/mp4 demuxer is a good idea. 392092 mov.c ugh. thanks, -compn _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
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