[FFmpeg-devel] [PATCH] Fix Ogg data_offset computation.

[Aaron Colwell]

Ping. Can I get a review for this patch please.

Thank you,
Aaron

On Thu, Nov 18, 2010 at 3:04 PM, Aaron Colwell <acolwell at chromium.org>wrote:

>
> If (in your example) only the first audio packet is demuxed and then
>> a seek is done, the video packet will never be demuxer and thus
>> data_offset will stay wrong.
>>
>
> You are right. I've attached a new patch that makes sure that
> data_offset is set properly before ogg_get_headers() returns. This
> should prevent the scenario you described.
>
>
> A proper fix means you have to set data_offset already when the
>
>> first packet is read/parsed.
>> Concerning "valid Ogg file or not" I can only think, valid it may be,
>> it just would be nice to find something one could call a "sane Ogg file".
>>
>
> I agree that it would be nice to have a stronger definition of "sane", but
> unfortunately stuff like this appears to be par for the course in ogg.
>
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