1096742 - Investigate randomly failing test_FrameSelection when Intel WebM decoder is enabled on Windows

Status: RESOLVED WORKSFORME

(Core :: Audio/Video, defect)

Description

[Matthew Gregan [:kinetik]]

Spinning off from bug 922314.  dom/media/mediasource/test/test_FrameSelection randomly fails when the Intel WebM decoder is enabled (but not used, since this is happening on systems without the requisite hardware/software installed).

The creation of the Intel decoder was hidden behind the pref media.webm.intel_decoder.enabled so that this random failure didn't block landing the bulk of the patch from bug 922314.  This bug is to track down the cause of the random failure and (once fixed) remove the media.webm.intel_decoder.enabled pref so that the decoder is always enabled.

Comment 1

[Matthew Gregan [:kinetik]]

I can't reproduce this with the latest version of the code from bug 922314.  It's likely that removing the main thread dispatches to instantiate the decoders was the change that fixed this.

Comment 2

[Boyan Ilianov]

Instant crash in an attempt to seek in a video with the Intel decoder enabled.
Firefox 36.0a1 Crash Report [@ mozilla::WebMReader::SeekInternal(__int64, __int64) ]
ID: e3d988ea-a259-44e1-a9d1-f90d92141125

Comment 3

[Matthew Gregan [:kinetik]]

(In reply to Boyan Ilianov from comment #2)
> Instant crash in an attempt to seek in a video with the Intel decoder
> enabled.
> Firefox 36.0a1 Crash Report [@ mozilla::WebMReader::SeekInternal(__int64,
> __int64) ]
> ID: e3d988ea-a259-44e1-a9d1-f90d92141125

Thanks for the report.  That's bug 1104410.