[FFmpeg-soc] ALAC Benchmarks

Jai Menon realityman at gmx.net
Mon Aug 25 17:41:03 CEST 2008


Hi,

On Monday 25 Aug 2008 7:57:42 pm Mike Melanson wrote:
> Guillaume POIRIER wrote:
> > Hello,
> >
> > On Mon, Aug 25, 2008 at 4:20 AM, Mike Melanson <mike at multimedia.cx> wrote:
> >> Jai Menon wrote:
> >>> There are options to select min and max prediction orders but till I
> >>> finish tuning the encoder completely, you could try something like :
> >>>
> >>> ./ffmpeg -i <file.wav> -acodec alac <output.m4a>
> >>>
> >>> That should give you pretty decent compression.
> >>
> >> Should this result in a file that can play on an iPod? I see Guillaume
> >> reported success but I can not play the files on my iPod Touch.
> >
> > The resulting file played fine on my iPod Classic. I don't see any
> > reasonable reason why it wouldn't play on your iPod Touch.
> > For all that's worth, my iPod Classic has the latest firware and I
> > used the latest version of iTunes on Leopard.
>
> Who knows; that might be the issue. I'm pretty sure I have the latest
> 1.x firmware. But I haven't yet bought the 2.x software upgrade.

Also, if the Touch with a fairly recent firmware upgrade has problems, I'm not 
really sure if the iPhone will be able to grok the files either. Anybody out 
there with free time and an iPhone willing to try this out? 
Thanks.


Regards,

Jai Menon



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