[Mp4-tech] closed caption

[Hughes Gary-DJWV76]

It depends on the system environment and what it specifies/requires.
In some environments, CC data is carried in a private data PES stream
(type 0x06). This is common in some DVB environments, and there are DVB
specs on carriage of VBI data that address the requirements for CC.
Other systems carry CC  data in User Data SEIs registered under ITU
T.35. This is the required method under SCTE (US Cable) and is also
allowed under DVB specs.
gary
Gary Hughes
Video Architect, Advanced Engineering
Motorola On Demand Solutions, MA34
80 Central St.
Boxborough, MA  01719
Email: ghughes motorola.com
Office: 978 266 7269
Mobile: 978 339 3615
________________________________
	From: mp4-tech-bounces lists.mpegif.org
[mailto:mp4-tech-bounces lists.mpegif.org] On Behalf Of Ranjane
	Sent: Thursday, November 29, 2023 5:35 AM
	To: mpeg
	Subject: [Mp4-tech] closed caption 
	Hello experts,
	we working on MPEG-2 Transport stream(h264 video + some audio).
	how to add closed caption to the Transport stream.
	I am not sure whether to add closed caption data as seperate
stream.
	what is the value for stream type if closed caption is added as
seperate Pes packet.
	which document we have to follow for implementing Closed Caption
?
	with thanks and regards,
	Ranjane.R
________________________________
	Be a better pen pal. Text or chat with friends inside Yahoo!
Mail. See how.
<http://us.rd.yahoo.com/evt=51732/*http://overview.mail.yahoo.com/> 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: /pipermail/mp4-tech/attachments/20071129/1fc351f4/attachment.html