Hvec sdk ffmpeg download
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set to 1 to enable Spatial AQ (default false) If forcing keyframes, force them as IDR frames. When lookahead is enabled, set this to 1 to disable adaptive I-frame insertion at scene cuts (default false) Delay frame output by the given amount of frames (from 0 to INT_MAX) (default INT_MAX) (from -2 to INT_MAX) (default any)Īny E.V. Number of concurrent surfaces (from 0 to 64) (default 0)
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Number of frames to look ahead for rate-control (from 0 to INT_MAX) (default 0) Constant bitrate low delay high quality modeĬbr_hq E.V. Multi-pass variable bitrate mode (deprecated)Ĭbr_ld_hq E.V. Multi-pass optimized for constant frame size (deprecated) Multi-pass optimized for image quality (deprecated) Variable bitrate mode with MinQP (deprecated) Override the preset rate-control (from -1 to INT_MAX) (default -1) Set the encoding tier (from 0 to 1) (default main) Set the encoding level restriction (from 0 to 186) (default auto) Set the encoding profile (from 0 to 4) (default main) Set the encoding preset (from 0 to 11) (default medium)
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Supported pixel formats: yuv420p nv12 p010le yuv444p p016le yuv444p16le bgr0 rgb0 cuda d3d11 Possible values:Ĭhroma_sample_location integer (decoding/encoding,video)Ĭode: Encoder hevc_nvenc : If used as input parameter, it serves as a hint to the decoder, which color_range the input has.
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I'll find and post an example of the desync on the nvencc github to see if it can be fixed.Īnyway, any suggestions on how to get only a range of the colour-related metadata from the input file to the output file using ffmpeg per the above commandline ?Ĭode: color_primaries integer (decoding/encoding,video)Ĭolor_trc integer (decoding/encoding,video)Ĭolorspace integer (decoding/encoding,video)Ĭolor_range integer (decoding/encoding,video) I also tried to use the very interesting NVEencc, where one can set such parameters on the commandline, however I found that a number of encodes had a loss of audio sync whereas with ffmpeg the audio sync was maintained even if the metadata was missing.
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(eg the -x265-params "colormatrix=bt470bg") then when I ffprobe the output file I see that none of the metadata is there, neither copied from the input file nor from the commandline parameters which I assume are passed to libx265 and not the NV encoder. 5:cx=3:cy=3:ca=0.5,hwdownload" -c:v hevc_nvenc -pix_fmt yuv420p -profile:v main -level 5.1 -preset slow -rc vbr_hq -cq 26 -rc-lookahead 32 -spatial_aq 1 -x265-params "colormatrix=bt470bg" -c:a libfdk_aac -cutoff 18000 -ab 384k -ar 48000 -threads 0 -movflags +faststart -y "4" A variety of other new filters, parsers, and demuxers.ĭownloads and more details on today's FFmpeg 4.4 multimedia library release via ." ffmpeg.exe" -hide_banner -v verbose -strict -1 -init_hw_device opencl=ocl:1.0 -filter_hw_device ocl -threads 0 -i "4" -threads 0 -sws_flags lanczos+accurate_rnd+full_chroma_int+full_chroma_i np -filter_complex "yadif=0:0:0,hwupload,unsharp_opencl=lx=3:ly=3:la=0. Microsoft Paint demuxer and MSP version 2 decoder. AV1 low-overhead bitstream format demuxer. CPU-based AV1 encoding support via the SVT-AV1 encoder. Support for Microsoft DXVA2 / D3D11VA hardware-accelerated AV1 decoding. Via NVIDIA's NVDEC interface is also AV1 hardware accelerated decode. AV1 decode support for hardware acceleration, which so far is now supported for Intel QSV-accelerated AV1 decoding with Intel Gen12 graphics and Intel VA-API. VDPAU accelerated VP9 10-bit and 12-bit decoding. VDPAU accelerated HEVC 10-bit and 12-bit decoding. Among the exciting additions with FFmpeg 4.4 are:
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FFmpeg 4.4 is out today as a large update to this widely-used multimedia library and with it comes many new features including new demuxers, AV1 support improvements, and other enhancements.įFmpeg 4.4 includes a wide array of improvements over last year's FFmpeg 4.3 release.