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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [HSW] [regression] 4.9-rc1 shows corruption with mpv's vaapi-copy"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98402">98402</a>
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<th>Summary</th>
<td>[HSW] [regression] 4.9-rc1 shows corruption with mpv's vaapi-copy
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>DRI git
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
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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>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
</td>
</tr>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>andreas.reis@gmail.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=127505" name="attach_127505" title="Screenshot of vaapi-copy video corruption">attachment 127505</a> <a href="attachment.cgi?id=127505&action=edit" title="Screenshot of vaapi-copy video corruption">[details]</a></span>
Screenshot of vaapi-copy video corruption
Since 4.9-rc1 (also drm-intel-nightly) most 8-bit H.264 videos like…
<a href="https://www.youtube.com/watch?v=22jIHfvelZk">https://www.youtube.com/watch?v=22jIHfvelZk</a>
(In particular the max quality video returned eg. by "youtube-dl -f 137".)
… are corrupted as in the screenshot when mpv plays their h.264 versions my
Haswell 4770 & 4200U with 'hwdec=vaapi-copy'. No other configuration (needed)
in mpv.conf.
Unaccelerated 10-bit H.264, H.265, vp9, etc. is unaffected. Also, hwdec=vaapi
still works fine.
(mpv's *-copy brings the video data back to system memory after decoding, eg.
to apply further filters.)
The patterns of corruption are always the same, it appears as if a particular
type of frame causes hiccups.
I'm blaming it on DRM since rebooting into 4.8.3 (Arch vanilla config, same
compiler as for 4.9-rc1, same auto-detected gcc optimizations) and playing it
there with the same software shows no such corruption.
Involved software is all at respective git head – mesa, xserver,
xf86-video-intel, ffmpeg, libva, libva-intel-driver, mpv. gcc is version 6.2.1
20161006.</pre>
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