[FFmpeg-devel] [PATCH] fix ffmpeg crash on reading "non-interleved" DV type 1 AVI files

Michael Niedermayer michaelni
Fri Jan 15 23:15:22 CET 2010

On Fri, Jan 15, 2010 at 11:45:31AM +0200, Maksym Veremeyenko wrote:
> Michael Niedermayer ???????(??):
>> On Thu, Jan 14, 2010 at 06:38:37PM +0200, Maksym Veremeyenko wrote:
> [...]
>>> Am i wrong?
>> the correct solution is to use chained demuxers,
> Could you clarify?

its some work to redesign how avi and dv are connected.

> Should it be special case like:
> [...]
>     if(avi->non_interleaved){
> [...]
>         if (CONFIG_DV_DEMUXER && avi->dv_demux) {
> [...]
> I may be wrong, but it seems it useless since sync audio packet and video 
> frames stores in the same DV frame for DV type 1 AVI.
>> failing that, a single stream cant be non_interleaved whatever sets it
>> is likely wrong
> so if setted non_interleaved flag for DV type 1 AVI file is wrong?

iam not sure yet, maybe its wrong, maybe not.

does follwing work for the file?

+    if(!ast || !st->nb_index_entries)
-    if(!st->nb_index_entries)

and moving ast uses behind this
this would be an option if it turns out non_interleaved actually is correct,
one could after all create a very oddly broken avi that might need it for

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

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