[Bug 109538] VAAPI HEVC encoding is unstable and produces garbled output

[bugzilla-daemon@freedesktop.org]

[-- Attachment #1.1: Type: text/plain, Size: 1615 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=109538

            Bug ID: 109538
           Summary: VAAPI HEVC encoding is unstable and produces garbled
                    output
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: tempel.julian@gmail.com

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.

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 2909 bytes --]

[-- Attachment #2: Type: text/plain, Size: 160 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel