[Ffmpeg-devel] MPEG4 over TS

Erik Slagter erik
Fri Jun 3 11:31:52 CEST 2005

On Fri, 2005-06-03 at 10:58 +0200, Nico Sabbi wrote:
> AC3 is stored in dvd's implementation of mpegps using a technique called 
> substreaming:
> the first bytes of the payload indicates a substream_id, the other N-1 
> bytes (for ac3 N=4) indicate
> how many frames begin in the current pes and where the first byte of the 
> first frame
> starts (in byte offsets) after the 4 bytes. For LPCM N is 6 or 7 (not 
> sure). For DTS I don't know.
> Overall it's a kind of silly muxing inside the mux that I don't like.

It would seem logical to me that LPCM/ac3/dts should have had these
types registered with the mpeg authority somehow and then they would
have had their own (pes-)stream id, right? I'g guess there are enough
stream id's.

> >And what would LATM then be (in three words ;-))?

> another syntax for AAC. These aac people seem to get never tired of 
> pulling out new dialects

Any idea of the motive?

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