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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.

Today's Activity

aarch64: Add support for indirect branch targets in the function macro
Ramiro Polla: The function macro emits AARCH64_VALID_CALL_TARGET for exported symbols, marking them as valid destinations for indirect _calls_.

avutil/hwcontext_amf: Add AMF_IFACE_CALL macro
Dmitrii Gershenkop: Using AMF interfaces in C can be cumbersome and visually difficult to process in some cases: i.e.: object->function(object, args).

Yesterday's Activity

avcodec/amfenc: add encoder average QP stats
nyanmisaka: This allows for real-time monitoring of the encoder's average QP in ffmpeg CLI.

avcodec/x86/vvc/of: Don't add to zero
Andreas Rheinhardt: Instead rewrite the code to use assignment.

avcodec/x86/vvc/of: Avoid scalar log2
Andreas Rheinhardt: Instead convert the integers to floats and inspect the exponent.

avcodec/x86/vvc/of: Remove redundant instructions
Andreas Rheinhardt: m8 here (corresponding to a mix of sgx2 and sgy2 in derive_bdof_vx_vy in the C version) is always nonnegative, so the psignd boils down to a check for m8 being zero.

swscale/aarch64: add NEON sws_ops backend
Ramiro Polla: This commit pieces together the previous few commits to implement the NEON backend for sws_ops. In essence, a tool which runs on the target (sws_ops_aarch64) is used to enumerate all the functions that the backend needs to implement.

swscale/aarch64: introduce ops_asmgen for NEON backend
Ramiro Polla: The NEON sws_ops backend follows the same continuation-passing style design as the x86 backend.

swscale/aarch64: introduce a runtime aarch64 assembler interface
Ramiro Polla: The runtime assembler interface provides an instruction-level IR and builder API tailored to the needs of the swscale dynamic pipeline.

Other Activity This Week

lavf/mpegtsenc: Add parentheses to clarify operator precedence in CC update
Jun Zhao: While "cc + 1 & 0xf" is technically correct because addition has higher precedence than bitwise AND in C, the intent of "(cc + 1) & 0xf" is not immediately obvious without recalling the precedence table.

avformat/mpegts: create stream groups after having parsed the entire PMT
James Almer: Some faulty files have an LCEVC descriptor with a single stream, resulting in a group being created but never fully populated with the current implementation.

avcodec/decode: add a hwaccel specific post_process callback to FrameDecodeData
James Almer: Leave the existing one for non decoder-specific, post processing usage.

swscale/tests/sws_ops: add option for summarizing all operation patterns
Niklas Haas: This can be used to either manually verify, or perhaps programmatically generate, the list of operation patterns that need to be supported by a backend to be feature-complete.

avfilter/vf_lcevc: workaround for unknown initial dimensions
James Almer

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

lavc: implement a Vulkan-based prores encoder
IndecisiveTurtle: Adds a vulkan implementation of the reference prores kostya encoder.

avfilter: add d3d12 deinterlace filter `deinterlace_d3d12`
stevxiao: This commit introduces a video filter `deinterlace_d3d12` that provides hardware-accelerated deinterlacing using the D3D12 Video Processor. The filter supports:- bob and custom (motion-adaptive)deinterlace modes- frame-rate and field-rate output- automatic interlace detection Sample command lines: 1.

swscale/aarch64: introduce ops_asmgen for NEON backend
Ramiro Polla: The NEON sws_ops backend follows the same continuation-passing style design as the x86 backend.

swscale/aarch64: introduce a runtime aarch64 assembler interface
Ramiro Polla: The runtime assembler interface provides an instruction-level IR and builder API tailored to the needs of the swscale dynamic pipeline.

lavc/hevc: add aarch64 NEON for qpel uni-weighted vertical filter
Jun Zhao: Add NEON-optimized implementations for HEVC QPEL uni-weighted vertical interpolation (put_hevc_qpel_uni_w_v) at 8-bit depth. These functions perform weighted uni-directional prediction with vertical QPEL filtering:- 8-tap vertical QPEL filter- Weighted prediction: (filter_result * wx + offset) >> shift Previously only sizes 4, 8, 16, 64 were optimized.

lavc/hevc: add aarch64 NEON for epel uni horizontal filter
Jun Zhao: Add NEON-optimized implementations for HEVC EPEL uni-directional horizontal interpolation (put_hevc_epel_uni_h) at 8-bit depth.

lavc/hevc: add aarch64 NEON for qpel uni-weighted HV filter
Jun Zhao: Add NEON-optimized implementations for HEVC QPEL uni-directional weighted HV interpolation (put_hevc_qpel_uni_w_hv) at 8-bit depth, for block widths 6, 12, 24, and 48. These functions perform horizontal then vertical 8-tap QPEL filtering with weighting (wx, ox, denom) and output to uint8_t.

avutil/crc: add aarch64 NEON PMULL+EOR3 SIMD implementation for av_crc
Shreesh Adiga: Implemented clmul algorithm for aarch64 using PMULL and EOR3 instructions.

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

swscale/aarch64: add NEON sws_ops backend
Ramiro Polla: This commit pieces together the previous few commits to implement the NEON backend for sws_ops. In essence, a tool which runs on the target (sws_ops_aarch64) is used to enumerate all the functions that the backend needs to implement.

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