Re: H263 (NOT H263+) mp4 hinting

Ok, I'l try to explain it once again (h263 naming is a
complete mess).

First, there is no such thing as h263/h263+/h253++ and
h263-1996,h263-1998 and h263-2000 are just for rtp
pacektization.

There is only one h263, but there has been three revisions
of the standard, (1996,1998 and 200) and each revision has
just added
anexes to it. So what it's usually called h263p is just h263
using some anexes (advanced intra coding, etc) at will.

Another different thing is rtp packetization, h263-1996 is
rfc 2190, and h263-1998 and h263-2000 are rfc 2429.

Usually, for videoconferencing h263 is used without anexes.
So the same base h263 stream can be pacektized as h263-1996
or
h263-1998. In fact converting from h263-1996 to
h263-1998/2000 is almost trivial (not the other way round).

Hope it's a bit mor clear now.

Best regards
Sergio



---------- Original Message
----------------------------------
From: Klaus Darilion <klaus.mailinglistspernau.at>
Reply-To: Development discussion of video media support in
Asterisk<asterisk-videolists.digium.com>
Date:  Fri, 20 Jul 2007 01:00:28 +0200

>Manos Megagiannis wrote:
>> Mp4creator only generates h263-2000 hints.
>> Any similar programs for h263?
>
>To summarize this for beginners like me:
>AFAIK h263+ is the same as h263-2000. Correct?
>But what is h263? is it h263-1996 or h263-1998?
>
>AFAIK mp4play and needs hint tracks. Thus, h263 can not
be used with 
>mp4play due to the lack of generating a h263 hint
track?
>
>What about a h263 video track with a h263-2000 hint
track? Is this 
>possible? will it work?
>
>thanks
>klaus
>
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And what is supported by app_mp4?

regards
klaus

Sergio Garcia wrote:
> Ok, I'l try to explain it once again (h263 naming is a
complete mess).
> 
> First, there is no such thing as h263/h263+/h253++ and
h263-1996,h263-1998 and h263-2000 are just for rtp
pacektization.
> 
> There is only one h263, but there has been three
revisions of the standard, (1996,1998 and 200) and each
revision has just added
> anexes to it. So what it's usually called h263p is just
h263 using some anexes (advanced intra coding, etc) at
will.
> 
> Another different thing is rtp packetization, h263-1996
is rfc 2190, and h263-1998 and h263-2000 are rfc 2429.
> 
> Usually, for videoconferencing h263 is used without
anexes. So the same base h263 stream can be pacektized as
h263-1996 or
> h263-1998. In fact converting from h263-1996 to
h263-1998/2000 is almost trivial (not the other way round).
> 
> Hope it's a bit mor clear now.
> 
> Best regards
> Sergio
> 
> 
> 
> ---------- Original Message
----------------------------------
> From: Klaus Darilion <klaus.mailinglistspernau.at>
> Reply-To: Development discussion of video media support
in Asterisk<asterisk-videolists.digium.com>
> Date:  Fri, 20 Jul 2007 01:00:28 +0200
> 
>> Manos Megagiannis wrote:
>>> Mp4creator only generates h263-2000 hints.
>>> Any similar programs for h263?
>> To summarize this for beginners like me:
>> AFAIK h263+ is the same as h263-2000. Correct?
>> But what is h263? is it h263-1996 or h263-1998?
>>
>> AFAIK mp4play and needs hint tracks. Thus, h263 can
not be used with 
>> mp4play due to the lack of generating a h263 hint
track?
>>
>> What about a h263 video track with a h263-2000 hint
track? Is this 
>> possible? will it work?
>>
>> thanks
>> klaus
>>
>> _______________________________________________
>> --Bandwidth and Colocation Provided by http://www.api-digital.c
om--
>>
>> asterisk-video mailing list
>> To UNSUBSCRIBE or update options visit:
>>   http://lists.digium.com/mailman/listinfo/asterisk-video
>>
>  
> 
> _______________________________________________
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om--
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> asterisk-video mailing list
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>    http://lists.digium.com/mailman/listinfo/asterisk-video


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