[foms] Proposal: adaptive streaming using open codecs

Mark Watson watsonm at netflix.com
Thu Oct 28 10:00:19 PDT 2010

On Oct 27, 2010, at 3:35 AM, Jeroen Wijering wrote:

Hey Mark, all,

On Oct 26, 2010, at 8:41 PM, Mark Watson wrote:

It would be really great if the whole thing could run independently for audio and video. They can be completely decoupled for streaming and synchronized at the renderer.

I'd imagine both audioElement and videoElement have this "append" call.

I did some quick tests with trying to keep a video and an audio in sync (for closed audiodescriptions). You have to pay attention around buffering, but once you have sync it works great.

One quick follow-up on this. How would you indicate to the player that the video and audio elements must be synchronized ? If one stalls you want the other to pause too. Presumably you want to do playback control and receive playback events through just one of them.

Or would it be better to treat this case as a single video element, which handles both audio and video and so has separate appendVideo() and appendAudio() calls ?


In time, it'd be awesome if one could feed a videoElement e.g. a full DASH manifest with separate video, audio and text tracks. But that'll probably be a couple of iterations away...

Kind regards,


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