Firefox 50 WebRTC and Web Audio Release Notes

[Maire Reavy]

Firefox 50 is now our Developer Edition version, and it's scheduled to go to Beta on September 12th and to Release on November 8th.  Detailed WebRTC (plus Web Audio) release notes for Firefox 50 are here.

If anyone has any questions about the release, the notes, or possible bugs in the code, feel free to reach out to me directly.

Cheers,

-Maire

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Noteworthy Changes:

• Several quality improvements for Mac full duplex landed in libcubeb.   The current plan is to ship Mac full duplex and Windows full duplex to release in Fx 50.  (See bug 1280280, bug 1283850 and bug 1285541.)
  
• Support for addtrack event for MediaStream. (See bug 1208328.)
• Implement MediaStreamTrack.readyState/onended (See bug 1208373.)
• MediaStreamAudioSourceNode was getting garbage collected while there were live audio tracks (See bug 934512.)
• [Web Audio] Fixed "Acid Defender" WebAudio game to remove extra beep artifacts (See bug 1283910.)
• [Web Audio] Allow smooth off-main-thread scheduling of listener and source position. (See bug 1265394.)
• [Web Audio] Added a new IIRFilterNode that implements a general IIR filter. (See bug 1265408.)
• [Web Audio] Implemented new web audio spec filters (See bug 1265395.)
• [Web Audio] Fixed correctness issues (See bug 1213313 and bug 1257718.)
• Fixed no video being rendered after renegotiating recvonly video (e.g. on meet.jit.si) (See bug 1273652.) Uplifted to Fx49.
• Cherry-picked bugfix for Delay-Agnostic AEC from Chrome 51 (See bug 1286644.) Uplifted to Fx49 and Fx48.
• Implemented MediaStreamTrack.getConstraints() + getSettings() (See bug 1213517.)
• Fixed packetization mode 0 for H.264 codec (See bug 1167544.)
• We have landed partial support for FEC in Fx50 (See bug 1279049 and bug 1275360), but we expect to have full support landed in Fx51. It is still TBD if we will pref on FEC in Fx51 or a later release, but in Fx51 anyone should be able to flip the pref and try FEC in Firefox.

--
Maire Reavy
m...@reavy.org, mre...@mozilla.com