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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [GStreamer][MSE] Fix player private selection when MSE is enabled"
href="https://bugs.webkit.org/show_bug.cgi?id=164116">164116</a>
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<th>Summary</th>
<td>[GStreamer][MSE] Fix player private selection when MSE is enabled
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<th>Classification</th>
<td>Unclassified
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<th>Product</th>
<td>WebKit
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<th>Version</th>
<td>WebKit Local Build
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<th>Hardware</th>
<td>Unspecified
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<th>OS</th>
<td>Unspecified
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>Normal
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<th>Priority</th>
<td>P2
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<th>Component</th>
<td>Platform
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>eocanha@igalia.com
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<pre>It looks like the player private selection mechanism doesn't rely exclusively on the supportsType() function. Even when supportsType() returns false (a particular player declines to be selected to play a content) MediaPlayer::loadWithNextMediaEngine() can still use nextMediaEngine() and select a completely unappropriate player private for that kind of content. In that case, the expected behaviour (not met by the MSE private player) is to set networkState to MediaPlayer::FormatError. That would force a different player to be used.
This misbehaviour was the cause of the massive test crashes reported in #164022, as the MSE player was being selected to play regular videos despite not being properly configured with a MediaSourcePrivateClient (this can't happen for an MSE video).</pre>
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