[FFmpeg-devel] [PATCH] QCELP decoder

[Kenan Gillet]

Hi,
On Nov 23, 2008, at 7:20 AM, Reynaldo H. Verdejo Pinochet wrote:

> Hello Kenan.
>
> Kenan Gillet wrote:
>
>> In order to read the two samples h263.mov and blue_earth.mov,
>> we need to look at the rate byte in the frame (as the spec describes)
>> and not just rely on the buffer_size
>> since for those files, the buffer_size is always 35 but they contains
>> RATE_FULL, RATE_HALF, RATE_QUARTER and RATE_OCTAVE.
>>
>
> You sure this is from the spec and not from
> http://www.rfc-editor.org/rfc/rfc2658.txt ?
> I don't recall from the top of my head.

it is not from the specs but from looking into the 2 samples with an
hex editor...

The RFC 2658 is only for RTP transport, and it will probably need
a parser. But right now, I think the focus is on making the QCELP
decoder works on the different flavor of MOV files, and it does not
need any parser.

>
> In either case I think this should rather
> be handled in the parser.

QCELP on RTP will probably need a parser, QCELP in MOV
does not at the moment.


Kenan