[Webkit-unassigned] [Bug 191257] [GStreamer][MSE] pixelated video when MSE is enabled

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=191257

--- Comment #1 from Jim Mason <jmason at ibinx.com> ---
I can confirm the problem is specific to webm and MSE.  If I comment out the following one line in the source, all YouTube videos display without pixelation when MSE is enabled:


--- a/Source/WebCore/platform/graphics/gstreamer/mse/MediaPlayerPrivateGStreamerMSE.cpp 2018-10-27 22:20:58.000000000 +0000
+++ b/Source/WebCore/platform/graphics/gstreamer/mse/MediaPlayerPrivateGStreamerMSE.cpp 2018-11-05 21:18:54.717811557 +0000
@@ -713,7 +713,9 @@
         const char* mimeTypes[] = {
             "video/mp4",
             "audio/mp4",
+#ifdef ENABLE_MSE_WEBM_VIDEO
             "video/webm",
+#endif
             "audio/webm"
         };
         for (auto& type : mimeTypes)



It seems the problem is specific to MSE, as I can play other webm vp8 and vp9 streams in WebKit, such as these: https://base-n.de/webm/VP9%20Sample.html

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