Do ffmpeg -hwaccel vaapi -hwaccel_device /dev/dri/renderD128 -hwaccel_output_format vaapi -i 1080p_h.264_60fps.mp4 -c:v hevc_vaapi -qp 22 -tier high -c:a copy output.mp4 Several times and browse the web with Firefox while doing so. Sooner or later (rather sooner) the encoding will either hang or the driver crashes completely and I need to perform a hard reset. The encoding settings don't seem to matter as long -c:v hevc_vaapi is used. -c:v h264_vaapi seems to be totally stable. The encoding result of -c:v hevc_vaapi also shows a garbled line at the bottom of the video, while -c:v h264_vaapi looks fine. This is with a RX 580 mesa-git 19.1.0_devel.107212.ab940b0d972 linux 4.20.6 & drm-next-5.1-wip f9028b9278422fdf186f1b88662e28ed24e13df8 libva 2.4 ffmpeg-git b429c86d84cfc964c84bc68ec56799802de2b25a There seems to be a difference between linux 4.20.6 & drm-next-5.1-wip though. I couldn't make the stable kernel crash entirely, instead just the encoding process started to hang.
I'm doing it the other way around hevc_vaapi 10 bit to h264_vaapi and have similar results, garbled green output ffmpeg -threads 4 \ -init_hw_device vaapi=amd:/dev/dri/renderD128 -hwaccel vaapi -hwaccel_output_format vaapi -hwaccel_device amd -filter_hw_device amd \ -i nexp.mkv' \ -vf "scale_vaapi=format=nv12" \ -c:v h264_vaapi -profile:v 578 \ -c:a copy -c:s copy \ -f mpegts -y plop.mkv libva info: VA-API version 1.6.0 libva info: va_getDriverName() returns 0 libva info: Trying to open /usr/lib64/va/drivers/radeonsi_drv_video.so libva info: Found init function __vaDriverInit_1_6 libva info: va_openDriver() returns 0 vainfo: VA-API version: 1.6 (libva 2.6.0.pre1) vainfo: Driver version: Mesa Gallium driver 19.2.0-devel for AMD RAVEN (DRM 3.32.0, 5.2.0-gentoo, LLVM 8.0.0) vainfo: Supported profile and entrypoints VAProfileMPEG2Simple : VAEntrypointVLD VAProfileMPEG2Main : VAEntrypointVLD VAProfileVC1Simple : VAEntrypointVLD VAProfileVC1Main : VAEntrypointVLD VAProfileVC1Advanced : VAEntrypointVLD VAProfileH264ConstrainedBaseline: VAEntrypointVLD VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice VAProfileH264Main : VAEntrypointVLD VAProfileH264Main : VAEntrypointEncSlice VAProfileH264High : VAEntrypointVLD VAProfileH264High : VAEntrypointEncSlice VAProfileHEVCMain : VAEntrypointVLD VAProfileHEVCMain : VAEntrypointEncSlice VAProfileHEVCMain10 : VAEntrypointVLD VAProfileJPEGBaseline : VAEntrypointVLD VAProfileVP9Profile0 : VAEntrypointVLD VAProfileVP9Profile2 : VAEntrypointVLD VAProfileNone
Doesn't crash anymore, but there is still a garbled line at the bottom of video frames.
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