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FFmpeg

FFmpeg is a popular open-source multimedia framework commonly used for audio/video encode and decode functionality to a variety of codecs.

Yesterday's Activity

avcodec/mfenc: add support for D3D11 input surfaces
Dash Santosh: Adds D3D11 input surface support to the MediaFoundation encoder (mfenc), allowing direct encoding of GPU frames without readback to system memory.

avfilter: add scale_d3d11 filter
Dash Santosh: This commit introduces a new hardware-accelerated video filter, scale_d3d11, which performs scaling and format conversion using Direct3D 11.

avcodec/apv: align APV color format support with latest liboapv version
Dariusz Frankiewicz

avfilter/avfiltergraph: add logging for filter formats
Niklas Haas: There is no convenient way, from the command line, to figure out which formats a filter actually supports.

lavu/spherical: Add support for Spherical Immersive type
Vittorio Giovara

Other Activity This Week

amfenc: Fix for full PA queue
Araz Iusubov: Fixes AMF_INPUT_FULL errors with pre-analysis (PA) enabled.

avutil/hwcontext_amf: add device cache size
Araz Iusubov: This change improves pipeline stability and reduces dynamic GPU surface allocations when using AMF with copy_frame = 1.

avfilter/vf_libplacebo: composite multiple inputs in linear light
Niklas Haas: This gives vastly improved blending results than when blending directly in the desired output colorspace.

avfilter/vf_premultiply: use correct premultiplication formula
Niklas Haas: The previous formula was introduced without justification in 6e713841e8, and the only thing Paul had to say about it over IRC was that it was copied from an unspecified source on the internet. I decided to do some testing and came to the conclusion that this term not only produces "illegal" files, but also lowers PSNR score, over the naive implementation without this extra term. Here are the results of a round-trip test, using allrgb/allyuv (respectively) as the input, and fade=alpha=yes:n=256 to cycle through every possible alpha value, comparing the round-trip output against the input: Before patch: PSNR r:26.677431 g:26.677431 b:26.677431 a:inf average:27.926818 min:6.012093 max:55.400791 PSNR y:26.677431 u:21.101981 v:21.101981 a:inf average:23.548981 min:9.013835 max:53.182303 (full) PSNR y:27.348055 u:21.101981 v:21.101981 a:inf average:23.625238 min:9.554991 max:45.652221 (limited) After patch: PSNR r:27.321996 g:27.321996 b:27.321996 a:inf average:28.571384 min:6.012093 max:52.424553 PSNR y:27.321996 u:23.187879 v:23.187879 a:inf average:25.431773 min:9.013835 max:50.199232 (full) PSNR y:27.868544 u:23.187879 v:23.187879 a:inf average:25.515660 min:9.554991 max:45.078298 (limited) It's worth pointing out that previous version sometimes artificially inflates PSNR by producing values that are too high (i.e.

avcodec/dovi_rpudec: skip unknown ext blocks instead of erroring out
Kacper Michajłow: Should allow for forward compatibility with newer versions.

forgejo/workflows: add issue/PR auto labeler
Timo Rothenpieler

FFmpeg Release Tags

qsvenc: restrict multi-frame encode to MFX_VERSION < 2.0
Haihao Xiang: Multi-frame encode isn't supported for MFX_VERSION >= 2.0[1][2].

qsvenc: restrict MFX_RATECONTROL_LA_EXT to MFX_VERSION < 2.0
Haihao Xiang: MFX_RATECONTROL_LA_EXT isn't supported for MFX_VERSION >= 2.0[1][2].

qsv: restrict OPAQUE memory to MFX_VERSION < 2.0
Haihao Xiang: OPAQUE memory isn't supported for MFX_VERSION >= 2.0[1][2].

avformat/libsrt: add missing SRT_VERSION_VALUE check
Marton Balint: This was missed in d7e2a2bb35e394287b3e3dc27744830bf0b7ca99.

avutil/attributes: add AV_GCC_VERSION_AT_MOST
James Almer

avutil/attributes: Add () to protect the AV_GCC_VERSION_AT_LEAST() arguments
Michael Niedermayer

avutil/version: Add () to protect the AV_VERSION_INT() arguments
Michael Niedermayer

Add FFMPEG_VERSION into the binary libs
Michael Niedermayer: This simplifies identifying from which revision a binary of a lib came from

Update back for git master
Michael Niedermayer

Changelog: replace next by 2.0
Michael Niedermayer

Most Popular In The Past Month

avfilter: add pad_cuda filter
Jorge Estrada: This patch adds the pad_cuda video filter.

avcodec/mfenc: add support for D3D11 input surfaces
Dash Santosh: Adds D3D11 input surface support to the MediaFoundation encoder (mfenc), allowing direct encoding of GPU frames without readback to system memory.

avfilter: add scale_d3d11 filter
Dash Santosh: This commit introduces a new hardware-accelerated video filter, scale_d3d11, which performs scaling and format conversion using Direct3D 11.

avfilter/vf_colordetect: add new color range detection filter
Niklas Haas: This filter can detect various properties about the image, including whether or not there are out-of-range values, or whether the input appears to use straight or premultiplied alpha. Of course, these can only be heuristics, with "undetermined" as the base case.

avfilter/vf_colordetect: add x86 SIMD implementation
Niklas Haas: alphadetect8_full_c: 5658.

avformat/mov_muxer: Extended MOV muxer to handle APV video content
Dawid Kozinski

avfilter/vf_blackdetect: add AVX2 SIMD version
Niklas Haas: Requested by a user.

avfilter/x86/scene_sad: add high bit depth AVX2/AVX512 version
Niklas Haas: Since psadbw only exists for 8-bits, we have to emulate it for 16-bit inputs.

avfilter/avfiltergraph: add logging for filter formats
Niklas Haas: There is no convenient way, from the command line, to figure out which formats a filter actually supports.

avformat: tls: drop support for OpenSSL < 1.1.0
Marvin Scholz

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