[Ffmpeg-devel] Which video codec for embedded use (iPods etc) ?

[Michael Niedermayer]

Hi

On Sat, Feb 11, 2006 at 08:20:53PM +0000, M?ns Rullg?rd wrote:
> Michael Niedermayer <michaelni at gmx.at> writes:
> 
> > Hi
> >
> > On Sat, Feb 11, 2006 at 07:48:15PM +0000, M?ns Rullg?rd wrote:
> >> Michael Niedermayer <michaelni at gmx.at> writes:
> >> 
> >> >> I'm looking for advice as to which video codec has the greatest chance
> >> >> of performing well in such an environment.  i.e. one which gives a
> >> >> reasonable compression ratio, but is "easy" to decode?
> >> >
> >> > mpeg1 in avi or other simple container (not mpeg-ps)
> >> 
> >> Why not mpeg-ps?  It's as simple as anything to demux, and is a
> >> standard format.
> >
> > with AVI you have some buffer which contains part of the file, simply 
> > check the frame size, if you have enough pass a pointer to the decoder, 
> > if not read more
> >
> > with MPEG-PS you need to do the same but additionally you need to
> > go over all the data and ensure that you have a complete slice before
> > you can decode it, or is there some trick iam not aware of?
> 
> It depends on the decoder.  Most decoders, including lavc, will decode
> the bitstream as it is passed in, and signal when a complete
> slice/frame has been decoded.  Does lavc send MPEG data through the
> frame parser, even when the codec doesn't require it?

the codec itself will send the data through the "parser" if you dont
supply it with complete frames

[...]

-- 
Michael