QA/H264-AAC-MP3 support

Summary

This feature adds support for playing H.264/AAC in MP4 and support for playing MP3 audio files in HTML5 (video) and (audio) elements are switched on by default.

Reference

• Pearce's blog post: H.264/AAC/MP3 support now enabled by default in Firefox Nightlies on Windows 7 and later
• Tracking bug: 799318 - [meta] Support H.264/AAC/MP3 video/audio playback on desktop Firefox

Test Cases

• The available test cases for this feature can be found here.
• Automated tests can be found in bugs 799315 and 820208.
• Also, automated tests containing different scenarios are found on this page.

Important Bugs

• 799315 - Windows Media Foundation backend for media playback
• 832754 - Enable support for H.264/AAC/MP3 video/audio playback in Metro Firefox
• 839055 - H.264/AAC support: abort playback of resource if the video or audio stream is unplayable
• 837859 - Enable WMF backend
• 836927 - Get Windows Media Foundation backend to pass Mochitests on TBPL/Try
• 825446 - Firefox crashes while trying to open MP3 stream (media.windows-media-foundation.enabled = true)
• 824877 - crash in mozilla::MediaCache::GetBlockOwner
• 823646 - Certain H.264 movie are not shown properly with media.windows-media-foundation.enabled = true
• 823168 - Huge performance problem in IE testDrive FishBowl if set media.windows-media-foundation.enabled = true
• 820208 - Register MP4, MP3, and M4A extensions with appropriate Content-Types for httpd.js
• 815748 - Build system changes for Windows Media Foundation HTML5 media backend
• 838982 - codecdetect.com doesn't detect MPE4, M4A, MP3, AAC, and WAVE
• 832143 - Windows Media Foundation backend should implement skip to next keyframe
• 824234 - High CPU usage with h.264 video

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Criteria

• All the test cases were executed.
• All the blocker, critical, major bugs have been fixed.