26778 2014-09-10 20:52:50 +0000 Section 3 MPEG-2 TS should handle the closed captions case where the caption_services_descriptor is not signaled when caption data is present in the transport stream. 2014-10-15 15:38:30 +0000 1 1 1 Unclassified HTML WG Sourcing In-band Media Resource Tracks unspecified PC Windows NT RESOLVED FIXED P2 normal --- 1 Pat_Ladd2 b.lund b.lund mike public-html-admin self public-html-bugzilla oldest_to_newest 111364 0 Pat_Ladd2 2014-09-10 20:52:50 +0000 Existing MPEG-2 TS content does not always contain the ‘caption_services_descriptor’ to signal when captions are present. Caption tracks should be sourced in this case. This can be done as follows: Section 3.2. The CEA 708 caption service [CEA708] as identified by: - A 'Caption Service Descriptor' [ATSC65] in the 'Elementary Stream Descriptors' in the PMT entry for a video stream with stream type 0x02 or 0x1B. - For stream type 0x02, the presence of caption data in the ‘user_data()’ field [ATSC52]. - For stream type 0x1B, the presence of caption data in the ‘ATSC1_data()’ field [SCTE128-1]. Section 3.3. Language: @kind is “captions”: - Content of the 'language' field for the caption service in the 'Caption Service Descriptor’. - If a ‘caption_service_descriptor()’ is not present: o @language of the audio track where @kind is “main” for the first caption service o The empty string for all other caption services [ATSC52] http://www.atsc.org/cms/standards/a53/a_53-Part-1-6-2007.pdf [SCTE128-1] http://www.scte.org/documents/pdf/Standards/ANSI_SCTE%20128-1%202013.pdf 111982 1 silviapfeiffer1 2014-09-22 22:17:46 +0000 I don't fully understand what you're trying to change. Would you mind providing a patch on GitHub for https://github.com/w3c/HTMLSourcingInbandTracks ? (This explains how: https://help.github.com/articles/creating-a-pull-request) 112191 2 b.lund 2014-09-25 19:03:38 +0000 (In reply to Silvia Pfeiffer from comment #1) > I don't fully understand what you're trying to change. > > Would you mind providing a patch on GitHub for > https://github.com/w3c/HTMLSourcingInbandTracks ? > (This explains how: https://help.github.com/articles/creating-a-pull-request) I've discussed this with Pat. I will provide a PR. 112193 3 b.lund 2014-09-25 20:06:22 +0000 (In reply to Bob Lund from comment #2) > (In reply to Silvia Pfeiffer from comment #1) > > I don't fully understand what you're trying to change. > > > > Would you mind providing a patch on GitHub for > > https://github.com/w3c/HTMLSourcingInbandTracks ? > > (This explains how: https://help.github.com/articles/creating-a-pull-request) > > I've discussed this with Pat. I will provide a PR. Created PR #24 [1] to resolve this bug [1] https://github.com/w3c/HTMLSourcingInbandTracks/pull/24