чт, 12 дек. 2024 г., 04:38 Andrew Randrianasulu <[email protected]>:
> > > чт, 12 дек. 2024 г., 04:09 Andrew Randrianasulu <[email protected]>: > >> >> >> чт, 12 дек. 2024 г., 03:11 Terje J. Hanssen <[email protected]>: >> >>> >>> >>> >>> Den 12.12.2024 00:46, skrev Andrew Randrianasulu via Cin: >>> > As Terje requested I looked up into amf compilation, _it seems_ it >>> > just require headers at compilation stage BUT amdgpu-pro runtime for >>> > any real use, and it goes via vulkan anyway ? >>> > >>> > >>> > https://ffmpeg.org/general.html#AMD-AMF_002fVCE >>> > >>> >> >> https://gpuopen.com/advanced-media-framework/ >> >> according to this (official?) site amf encoder component how can be used >> with mesa's radv driver, so may be less proprietary components can be >> installed? If whole thing granular enough .... >> >> ===== >> >> Version 1.4.34.0 >> >> - Added Linux support for DVR sample. >> - New HEVC header insertion mode. >> - Stable support for RADV drivers for AMF on Linux in >> VideoConverter/HQScaler/VideoEncoder and experimental for decoder. >> >> ====== >> >> > https://github.com/GPUOpen-LibrariesAndSDKs/AMF/wiki/Driver%20Linux > > this page says you can install just AMF component by using > > > sudo amdgpu-install -y --usecase=amf > > thankfully, there is also uninstall script ;) > > but you still need copy of amd headers manually placed in correct > location, and also ffmpeg compiled with--enable-amf > > notably, ffmpeg 7.1 also gives high bitrate in this case according to > > https://github.com/GPUOpen-LibrariesAndSDKs/AMF/issues/514 > > ah, it was just changed default ... in ffmpeg 7.1 > > but hopefully someone can try this manual install script route and report > how it behaves ... > as always, "it should work in theory, but ... " see end of https://github.com/GPUOpen-LibrariesAndSDKs/AMF/issues/457 and some notes there about gentoo ... > > >> >> >> >> >>> >>> >>> >>> >>> >>> >>> Some related sections I have extracted and collected, but not neccessary >>> up to date: >>> >>> AMD / Mesa >>> The Mesa VAAPI driver uses the UVD (Unified Video Decoder) and VCE >>> (Video Coding Engine) hardware found in all recent AMD graphics cards >>> and APUs. >>> https://trac.ffmpeg.org/wiki/Hardware/VAAPI#AMDMesa >>> >>> And this reminded me about our interlace problematic: >>> Encoding and interlacing support in Mesa are incompatible because of the >>> data layout in GPU memory. By default, frames are separated into fields >>> and interlaced video is supported but encoding is not. Set the >>> environment variable VAAPI_DISABLE_INTERLACE to 1 to be able to use the >>> encoder (but without any interlaced video support). >>> >>> AMD/VAAPI >>> https://trac.ffmpeg.org/wiki/HWAccelIntro#PlatformAPIAvailability >>> P Partial support (some devices / some features). >>> >>> VAAPI >>> https://trac.ffmpeg.org/wiki/HWAccelIntro#VAAPI >>> Video Acceleration API (VAAPI) is a non-proprietary and royalty-free >>> open source software library ("libva") and API specification, initially >>> developed by Intel but can be used in combination with other devices. >>> >>> It can be used to access the Quick Sync hardware in Intel GPUs (!?)and >>> the UVD/VCE hardware in AMD GPUs. See VAAPI. >>> >>> AMD UVD/VCE ¶ >>> https://trac.ffmpeg.org/wiki/HWAccelIntro#AMDUVDVCE >>> AMD UVD is usable for decode via VDPAU and VAAPI in Mesa on Linux. VCE >>> also has some initial support for encode via VAAPI, but should be >>> considered experimental. >>> >>> AMF is effectively supported by FFmpeg to significantly speed up video >>> encoding, decoding, and transcoding via AMD GPUs. >>> >>> AMD / Mesa >>> https://trac.ffmpeg.org/wiki/Hardware/VAAPI#AMDMesa >>> The Mesa VAAPI driver uses the UVD (Unified Video Decoder) and VCE >>> (Video Coding Engine) hardware found in all recent AMD graphics cards >>> and APUs. >>> >>> i965 Driver >>> >>> https://trac.ffmpeg.org/wiki/Hardware/QuickSync#i965vs.iHDDrivervs.libvpllibmfx >>> Supports VAAPI >>> i965 is packaged as standard in most Linux distributions. >>> Runs on older and cheaper devices. >>> Common API for applications which may also use AMD hardware with >>> Mesa. >>> Interoperable with standard APIs (EGL/OpenGL, OpenCL). >>> >>>
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