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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - AMD Radeon 5700 / Navi: VAAPI encoding generates garbled output"
href="https://bugs.freedesktop.org/show_bug.cgi?id=112133">112133</a>
</td>
</tr>
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<th>Summary</th>
<td>AMD Radeon 5700 / Navi: VAAPI encoding generates garbled output
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>DRI git
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>not set
</td>
</tr>
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<th>Component</th>
<td>DRM/AMDgpu
</td>
</tr>
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>toscar@gmx.net
</td>
</tr></table>
<p>
<div>
<pre>Using ffmpeg to encode video to h264/hevc with constant or variable bitrate
results in completely garbled output video on navi/radeon 5700 gpu.
ffmpeg command used:
ffmpeg -init_hw_device vaapi=foo:/dev/dri/renderD128 -hwaccel vaapi
-hwaccel_output_format vaapi -hwaccel_device foo \
-i <input file> -filter_hw_device foo -vf 'format=nv12|vaapi,hwupload' -c:v
hevc_vaapi -b:v 5000k -maxrate 5000k -f matroska <output file>
-This issue also applies to h264 encoding (replace "hevc_vaapi" with
"h264_vaapi" above).
HW used:
AMD Radeon 5700 XT
SW used:
linux-amd-staging-drm-next-git-5.4.858569.1c2677f991d3-1-x86_64
mesa-git 1:19.3.0_devel.116641.f11ea226664
libva-utils 2.5.0
ffmpeg 1:4.2.1
This issue sounds a bit like <a class="bz_bug_link
bz_status_NEW "
title="NEW - VAAPI HEVC encoding is unstable and produces garbled output"
href="show_bug.cgi?id=109538">BUG 109538</a>, however #109538 speaks of "garbled
line at the bottom" where I get completely garbled output, not just at the
bottom.
In additon, ffmpeg stalls/crashes sometimes as described in #109538 with:
[drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring vcn_enc0 timeout, signaled
seq=150025, emitted seq=150027
[drm:amdgpu_job_timedout [amdgpu]] *ERROR* Process information: process ffmpeg
pid 228611 thread ffmpeg:cs0 pid 228612</pre>
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