[Ffmpeg-devel] MPEG4 over TS

Måns Rullgård mru
Fri Jun 3 13:29:01 CEST 2005


Nico Sabbi <nsabbi at tiscali.it> writes:

> leon jorgunsen wrote:
>
>>Quoted from DVB TS 101 154 v1.6.1:
>>In H.3
>>"The MPEG-4 HE AAC elementary stream data shall be first
>>encapsulated in the LATM multiplex format according to ISO/IEC
>>14496-3 " (...)
>>"The LATM formatted MPEG-4 HE AAC elementary stream data shall be
>>encapsulated in the LOAS transmission format according to ISO/IEC
>>14496-3 " (...)
>>"The LATM/LOAS formatted MPEG-4 HE AAC elementary stream data shall
>>be encapsulated in PES packets. The MPEG-4 HE AAC PES shall be
>>carried with an MPEG stream_id = 110x xxxx and a stream type
>>assignment of 0x11 as described in ITU T Rec. H.222.0 | ISO/IEC
>>13818-1 "
>
> this is DVB's implementation of AAC, that is quite minoritary:
> almost every other implementation around uses ADTS.  There's really
> no bottom in aac :(

Since DVB requires that format, there is a strong point in supporting
it, at least for reading.  I suspect that DVB broadcasters use
different tools.

> BTW, do you have any LATM sample, please?

And documentation?  I don't have a copy of ISO-14496-3.

-- 
M?ns Rullg?rd
mru at inprovide.com





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