[theora-dev] Multiplexed Ogg and header problems.
Alejandro G. Belluscio
baldusi at uol.com.ar
Sat Nov 9 09:29:46 PST 2002
I've been thinking a bit about this. And may be we could come up
with an XML based definition for this things. Each stream should be
identified by it's serial number and have a description of it's
type. We then encapsulate this in an ogg file and concatenate it
_before_ the multiplexed file. It's kind of custom header file. Is
this too much against the idea of ogg encapsulating?
Friday, November 08, 2002, 4:33:51 PM, you wrote:
DM> good question. We have this functionality in our On2 server
DM> platform (TrueCast). It works great for limited/variable bandwidth
DM> situations ie internet at say 150 - 400 kbits/sec. Would love to
DM> see this in OGG.
DM> -----Original Message-----
DM> From: Alejandro G. Belluscio [mailto:baldusi at uol.com.ar]
DM> I there was a discussion on the vorbis list about Real Audio
DM> SureStream (tm) format. The basic idea was that they put multiple RA
DM> files with different compression levels. So when they have to switch
DM> the bit rate due to bandwidth changes, they choose from the streams
DM> they have. Since peeling is a long time away, it could be implemented
DM> with ogg vorbis multiplexing several times the same file with
DM> different compression levels. My question (and I think Monty can
DM> answer it) is how should the the presence of multiple concurrent
DM> vorbis streams be handled. Because if you have multiple audio tracks
DM> for a movie, or you have multiple compression rates it's very similar.
DM> The only problem seems to identify what's each of those streams for.
DM> In other word, how should I know that stream A is Swahili and stream B
DM> is Speranto, or that stream A is the -q3 compressed and Stream B is
DM> the -q1 compressed?
<p>--- >8 ----
List archives: http://www.xiph.org/archives/
Ogg project homepage: http://www.xiph.org/ogg/
To unsubscribe from this list, send a message to 'theora-dev-request at xiph.org'
containing only the word 'unsubscribe' in the body. No subject is needed.
Unsubscribe messages sent to the list will be ignored/filtered.
More information about the Theora-dev