[FFmpeg-devel] [PATCH] als in mp4

[Baptiste Coudurier]

Jai Menon wrote:
> On Sat, Mar 21, 2009 at 11:24 AM, Baptiste Coudurier
> <baptiste.coudurier at gmail.com> wrote:
>> Hi Jai,
>>
>> Jai Menon wrote:
>>> Hi,
>>>
>>> Attached :
>>>
>>> 1) demux als streams from mp4, als codec id and minor lavc version bump
>>> 2) mux als in to mp4, add isomedia type
>>>
>>> [...]
>>>
>>> @@ -1381,7 +1385,8 @@
>>>      uint8_t *buf;
>>>
>>>      for (i = 0; i < s->nb_streams; i++)
>>> -        if (mov->tracks[i].enc->flags & CODEC_FLAG_BITEXACT) {
>>> +        if (mov->tracks[i].enc->flags & CODEC_FLAG_BITEXACT ||
>>> +            mov->tracks[i].enc->codec_id == CODEC_ID_MP4ALS) {
>>>              return 0;
>>>          }
>>>
>> ???? Please explain :>
> 
> ok :)
> the muxer currently writes out a userdata box, with a meta box inside
> (mp4 mode).
> The meta box has a itunes hdlr tag which again leads to problems. So the patch
> skips writing a udta box. maybe instead of this, we could write mov style udta.
> what do you suggest?
> 
> btw, very sorry most of this looks like a hack, the reference codec
> mp4 parser has
> limitations.
> 

Humm, sorry too hackish, where can I get this reference codec mp4 parser ?

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