[FFmpeg-soc] ALAC Testing Report

Benjamin Larsson banan at ludd.ltu.se
Wed Jun 11 21:54:05 CEST 2008


Baptiste Coudurier wrote:
> Hi Mike,
> 
> Mike Melanson wrote:
>> Baptiste Coudurier wrote:
>>> Baptiste Coudurier wrote:
>>>> Hi Mike,
>>>>
>>>> Mike Melanson wrote:
>>>>> [...]
>>>>>
>>>>> *doesn't work* on my iPod Touch
>>>>>
>>>>> Methodology:
>>>>>
>>>>>    ffmpeg -i <source.wav> -acodec alac dest.mov
>>>>>
>>>>> Problem: Specifying either dest.mp4 or dest.m4a does not work. It 
>>>>> should. ALAC is supposed to be encapsulated in these formats and not in 
>>>>> .mov, 
>>>> Well, Quicktime player perfectly creates ALAC in .mov files, so I guess
>>>> it's obviously supposed to be encapsulated in .mov.
>>>>
>>>> Im afraid alac in .mp4 is definitely NON STANDARD.
>>>> You'll have to use -f ipod to be allowed to put ALAC in .m4a.
>>>> Im working on a patch.
>>>>
>>> Done, -acodec alac test.m4a should work, Mike can you please test it on
>>> your ipod/iphone ? Thanks a lot.
>> Still no go on the iPod, even though transcoding to .m4a now works.
>>
> 
> Crap, with really latest svn ? Like r13744 ? It plays fine with
> quicktime player :(
> 
> And with stream copy ?
> 

I tried on my Ipod video and the file worked.

MvH
Benjamin Larsson



More information about the FFmpeg-soc mailing list