Intent: to Ship: jitterBufferTarget
Daniel Baker
In the next couple days (pending reviews) I intend to land patches to enable
jitterBufferTarget for all platforms for use with Firefox 115 Nightly.
Summary: The jitterBufferTarget attribute allows the application to specify a target in milliseconds of media for the jitter
buffer to hold. Altering the target value allows applications to control the
tradeoff between playout delay and the risk of running out of audio or
video frames due to network jitter.
Bug for Feature: https://bugzilla.mozilla.org/show_bug.cgi?id=1592988
Standard:
- https://w3c.github.io/webrtc-extensions/#rtcrtpreceiver-jitterbuffertarget-attributes
- https://github.com/w3c/webrtc-extensions/pull/160
Platform Coverage: Available on all platforms.
Preference: This WebRTC API will be available by default and service providers who wish to take advantage may do so.
Other Browsers: No other browser has implemented jitterBufferTarget.
- Blink: Shipped a similar feature playoutDelayHint but it is not spec compliant. https://groups.google.com/a/chromium.org/g/blink-dev/c/4W4orKqA3Rs/m/6k0LdB9wCwAJ. They have mentioned their intent to align to the jitterBufferTarget spec here https://github.com/w3c/webrtc-extensions/issues/12#issuecomment-1508067133.
- Webkit: Not implemented
- playoutDelayHint WPT: https://wpt.fyi/results/webrtc-extensions/RTCRtpReceiver-playoutDelayHint.html?label=experimental&label=master&aligned
- Patch to convert to jitterBufferTarget: https://phabricator.services.mozilla.com/D176450