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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.

Other Activity This Week

swscale/ops: switch from AVRational to AVRational64
Niklas Haas: This has two immediate consequences: 1.

swscale/rational64: add 64-bit rational type
Niklas Haas: This is needed by the ops code, to represent intermediate values for 32-bit formats, which can exceed the value range of int32_t (especially for intermediate products). I copied the math almost 1:1 from rational.c, but adapted to use the 128-bit integer wrappers defined by int128.h.

avutil/int128: add header for 128-bit integers
Niklas Haas: These can be implemented efficiently on most modern 64-bit compilers.

avcodec/nvenc: remove support for SDK versions older than 11.1
Timo Rothenpieler

avfilter/cuda: support P012/P212 and MSB 4:4:4 in scale/transpose/thumbnail
Diego de Souza: NVDEC and CUVID now output AV_PIX_FMT_P012 (12-bit 4:2:0), AV_PIX_FMT_P212 (12-bit 4:2:2) and AV_PIX_FMT_YUV444P10MSB / AV_PIX_FMT_YUV444P12MSB (10/12-bit 4:4:4) for high-bit-depth content, but these CUDA filters rejected the formats in their supported-format lists, breaking pipelines such as "-hwaccel cuda ...

avutil/hwcontext_cuda: add P012 and P212 to supported formats
Diego de Souza: NVDEC and CUVID decode 12-bit 4:2:0 content to AV_PIX_FMT_P012 and 12-bit 4:2:2 to AV_PIX_FMT_P212, but these formats were missing from the CUDA frames context supported format list.

avfilter/vf_scale_cuda: add `use_filters` option
Niklas Haas: This may be faster or slower than the existing specialized kernels, so I opted not to prefer it by default.

avfilter/vf_scale_cuda: add generic 1D filter kernel
Niklas Haas: This can be useful for any sort of separable filtering with arbitrary weights.

avformat/http: make short-seek logic more robust
Niklas Haas: This avoids an underflow if short_seek is negative (which can happen if e.g.

swscale/tests/sws_ops: split passes when printing ops lists
Niklas Haas: This affects a large number of conversions across the board, either: 1.

swscale/ops_dispatch: add option to split const/copied subpasses
Niklas Haas: This already helps performance as-is, but will help performance massively once we add the ability for the memcpy backend to do a refcopy instead of an actual copy.

swscale/ops_dispatch: add option to link subpass outputs together
Niklas Haas: Not needed currently but will be used for parallel splits.

swscale/ops: keep track of copied/cleared components
Niklas Haas: These represent components which have not (yet) been modified from their input values (i.e.

avfilter/dnn: add ONNX Runtime backend with GPU execution provider support
stevxiao: This patch adds ONNX Runtime as a new DNN backend for FFmpeg's dnn_processing filter, enabling hardware-accelerated neural network inference on multiple GPU and NPU platforms. Execution Providers Supported:- CPU execution provider (default)- CUDA execution provider (NVIDIA GPUs)- DirectML execution provider (AMD/Intel/NVIDIA GPUs on Windows)- VitisAI execution provider (AMD Ryzen AI NPU) The options for dnn_processing with dnn_backend=onnx:- device: execution provider — cpu, cuda, dml, or vitisai (default: cpu)- device_id: GPU device index (default: 0)- threads_per_operation: inference thread count for CPU EP (default: 0, auto)- input: input tensor name.

avutil/hwcontext_d3d11va: support native P016 format
Kacper Michajłow: Map DXGI_FORMAT_P016 to AV_PIX_FMT_P016 and keep the 12-bit P012 as a compatibility entry, matching how Y216 and Y416 already expose both their native 16-bit and 12-bit variants.

FFmpeg Release Tags

avutil/opt: Remove obsolete LIBAVUTIL_VERSION_MAJOR checks
Andreas Rheinhardt: Removing them has been forgotten during the lavu 59->60 bump.

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

Most Popular In The Past Month

swscale: add new SwsContext.backends option
Niklas Haas: This allows constraining the set of available backends.

vulkan_ffv1: add Bayer encoder
Lynne

ffv1enc: add RCT coefficient search for Bayer
Lynne

.forgejo: add support for ephemeral FATE samples via PR attachments
Romain Beauxis: Developers can attach sample files to a PR and list their target paths within the fate-suite in a fate-samples block in the PR description: ```fate-samples vorbis/tos.ogg mov/some-new-sample.mov A new inject-pr-samples.py script fetches the PR metadata from the Forgejo API, resolves each listed path to its matching attachment by filename, and downloads the files into the fate-suite directory before FATE runs. The script validates that pr-number is an integer, that paths are relative, contain no '..', and are at most 3 components deep (matching the deepest paths in the existing fate-suite).

avformat: add shared concurrent block cache protocol
Niklas Haas: This adds a new protocol shared:URI which is distinct from the existing `cache:` in that it is explicity designed to be thread-safe and cross-process, enabling multiple ffmpeg processes (or multiple ffmpeg decoders within the same process) to share a single cache file, for e.g.

vulkan_ffv1: add Bayer decoder
Lynne

ffv1enc: implement Bayer pixel format encoding
Lynne

ffv1dec: implement Bayer pixel format encoding
Lynne

Squashed 'tests/checkasm/ext/' content from commit 0df02535c7
Niklas Haas

Merge commit 'df966476d760f1bfe4c5f52c463b82be5bf6b9ed' as 'tests/checkasm/ext'
Niklas Haas

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