[FFmpeg-devel] [PATCH 1/3] avformat/rtpdec_mpeg4: reassemble fragmented AAC frames

Thomas Volkert silvo at gmx.net
Sat Feb 21 23:51:19 CET 2015

On 21.02.2015 22:35, Gilles Chanteperdrix wrote:
> On Sat, Feb 21, 2015 at 04:54:12PM +0100, Thomas Volkert wrote:
>>> +    if (len < data->au_headers[0].size) {
>>> +        av_log(ctx, AV_LOG_ERROR, "First AU larger than packet size\n");
>> Can this really happen?
>> In the lines above you already check for the case that data is missing while
>> you have already received the last packet of the frame.
> The first test tests for
> data->nb_au_headers == 1 && len < data->au_headers[0].size
> We could still have:
> data->nb_au_headers >= 2 && len < data->au_headers[0].size
> Which is illegal per the RFC (a packet contains either a piece of a
> fragmented frame, or one or several entire frames, but never both),
> but some malformed packets could happen.

I was misled by the formatting of the patch and saw left parenthesis 
where there was none (was from the old code).
Your patch is okay for me - thanks.

Best regards,

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