- From: Brendan Long <B.Long@cablelabs.com>
- Date: Thu, 14 Nov 2013 20:23:10 +0000
- To: Bob Lund <B.Lund@CableLabs.com>, Jon Piesing <Jon.Piesing@tpvision.com>, Giuseppe Pascale <giuseppep@opera.com>
- CC: "public-inbandtracks@w3.org" <public-inbandtracks@w3.org>
> The PID is used by the Web application to correlate a video, audio or text track, created > from an MPEG-2 TS media resource, with the PMT data exposed as TextTrackCues. > Thus, it is not required that the PID have any end-to-end identity. The PMT data will > contain the component_tag, if present, and therefore Web app can access that if needed. > > Using the PID as the track.id seems better since the PID is available in all regions. Also, > it is consistent with the idea of using the media resource stream ID as the track id. This makes sense to me. It's also useful that the PID can be easily used to find tracks in the PAT, PMT, and other metadata, since everything in MPEG-TS uses the PID as the track identifier.
Received on Thursday, 14 November 2013 20:24:25 UTC