[FFmpeg-devel] [PATCH] AAC decoder

[Steven Ellis]

On Wed, April 2, 2008 20:51, Nico Sabbi wrote:
> On Wednesday 02 April 2008 10:37:42 Baptiste Coudurier wrote:
>> Hi,
>>
>> Nico Sabbi wrote:
>> > On Wednesday 02 April 2008 08:08:40 Andreas ?man wrote:
>> >> Steven Ellis wrote:
>> >>> On Wed, April 2, 2008 02:56, Andreas ?man wrote:
>> >>>> Andreas ?man wrote:
>> >>>>> Hi
>> >>>>>
>> >>>>> Here is the AAC decodoer from the soc repo.
>> >>>>
>> >>>> .. and here is an updated version with mpeg4audio.[ch] stuff.
>> >>>
>> >>> Any chance this will handle the LATM encapsulated AAC audio
>> >>> that you can get in DVB broadcasts?
>> >>
>> >> Nope, I believe that should be added in the AAC parser.
>> >
>> > in mplayer's libfaad there's already the necessary LATM Parser,
>> > although in a reasonably simplified version (only the 2 most
>> > common situations are handled)
>>
>> Is LATM prefered over ADTS in DVB ? Why is that ?
>
> I wouldn't say it's preferred, also because being LATM a bitstream
> syntax brain-farted to carry multiple streams it doesn't make the
> slighest sense in mpeg-ts.
> It's one more of the possible syntaxes allowed to carry AAC, and
> the worst of all if you ask me, but still it's used in Norway and New
> Zealand.

Some of the updated DVB specs I've read appear to mandate the use of LATM
for HE-AAC over DVB.

So any chance some of Nico's LATM Parser code can be reused in the ffmpeg ?

Steve