2024-09-30 09:44
michaelni changed the topic of #ffmpeg-devel to: Welcome to the FFmpeg development channel | Questions about using FFmpeg or developing with libav* libs should be asked in #ffmpeg | This channel is publicly logged | FFmpeg 7.1 has been released! | Please read ffmpeg.org/developer.html#Code-of-conduct
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<
BtbN >
Hm, what it's doing is passing -msse4.1 to the compiler...
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<
another| >
Am I reading this right that they basically assume avx2?
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<
cone-235 >
ffmpeg Anton Khirnov master:183c59b4738c: lavc: improve AVCodecContext.extradata/subtitle_header documentation
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<
cone-235 >
ffmpeg Anton Khirnov master:56ba57b67251: lavc/refstruct: move to lavu and make public
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<
cone-235 >
ffmpeg Kacper Michajłow master:92deed973206: avutil/file: fix av_file_map file mapping on Windows
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<
cone-235 >
ffmpeg Anton Khirnov master:2e956d9c0f98: lavc/container_fifo: move to lavu and make public
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<
cone-235 >
ffmpeg Anton Khirnov master:2ac34d085427: lavc/packet: add API for an AVPacket-based AVContainerFifo
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<
cone-235 >
ffmpeg Anton Khirnov master:8ad34e97b62c: fftools/sync_queue: switch from AVFifo+ObjPool to AVContainerFifo
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<
cone-235 >
ffmpeg Anton Khirnov master:8e0cceffa0d5: fftools/thread_queue: switch from AVFifo+ObjPool to AVContainerFifo
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<
jamrial >
elenril: kind of weird to have a single av_container_fifo_* function in lavc when the rest are in lavu
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<
jamrial >
maybe renaming it to avcodec_ would be better? (sorry for not noticing earlier)
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<
elenril >
better how
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<
elenril >
besides "weird"
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<
elenril >
it's a part of the container fifo api, so IMO it should be named as the rest of them
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jamrial >
different libraries providing functions using the same namespace feels awkward
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<
jamrial >
but it's not a big deal
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<
elenril >
it happens to live in lavc for technical reasons, but I don't see how changing the name improves anything
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<
BtbN >
another|: yes, if the compiler support avx2, they'll pass -mavx2
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<
BtbN >
I wouldn't care too much about that, if it'd only explode when encoding vvc stuff
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<
BtbN >
but for some odd reason it runs code from that library very early during a simple "ffmpeg"
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nevcairiel >
its probably using a global constructor
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nevcairiel >
you can't really stop that, other then not statically linking it in and only loading it when its used
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<
BtbN >
nevcairiel: ugh... I guess no vvenc in my builds then... hard-requiring avx2 is a no-go
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<
nevcairiel >
you could pretend the compiler doesnt support it, but then its probably super slow
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<
BtbN >
That would turn off SIMD completely
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beastd >
elenril: the lavu lavc split aside, do we have any other name candidates then _container_fifo?
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<
beastd >
oh already in master. seems i didn't notice the push warning :(
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jamrial >
beastd: can be safely renamed still if deemed appropiate
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beastd >
jamrial: ok will send a mail later tonight
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<
BtbN >
Finally found a way to reproduce that crash. And it involves running qemu in user-emulation-mode for a phenom CPU
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cone-876 >
ffmpeg James Almer master:fb5e8ea9719c: avformat/iamf_parse: fix setting duration for the last subblock in a parameter definition
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cone-876 >
ffmpeg James Almer master:d38fc25519cf: avformat/iamf_parse: add checks to parameter definition durations
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cone-876 >
ffmpeg Timo Rothenpieler master:fce0622d0b1f: avformat/hevc: add support for writing alpha layer
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cone-876 >
ffmpeg Timo Rothenpieler master:17e4746687ab: avcodec/libx265: add alpha layer encoding support