[FFmpeg-devel] [PATCH] alac: allow extra data without the ATOM header

[Steve Lhomme]

On Mon, Feb 15, 2016 at 10:16 AM, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:
> Steve Lhomme <robux4 <at> videolabs.io> writes:
>
>> I implemented the same change in VLC.
>
> From a quick look, you added code to the decoder
> wrapper but how is remuxing supposed to work?

In VLC ? There's no Matroska muxer so it would use the ffmpeg one.

>> But I think it would be better if the decoder works
>> with the lighter version of the extra data.
>
> Why?
> I mean where would the incomplete extra-data come from?

Look at the code in ffmpeg I liked. It's just header boilerplate.

>> Especially as in the decoder the first 12 bytes are
>> just skipped.
>
> But they are in the QT specification or am I wrong?
>
>> > Is vlc supposed to remux alac from mkv to mov?
>>
>> For the moment, yes.
>
> How can I reproduce this?
>
> Thank you, Carl Eugen
>
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