[MPlayer-dev-eng] [PATCH] Ignore 0-len packets for muxer prebuffering

[Tobias Diedrich]

Reimar Döffinger wrote:
> Thanks for taking care of it.
> 
> On Thu, Jun 23, 2011 at 11:26:13PM +0200, Tobias Diedrich wrote:
> > This fixes an issue where the libavformat muxer could not determine the
> > image dimensions while writing the header and subsequently crash with
> > a divison by zero, which is caused by calling muxer_write_header too early.
> 
> Can you pinpoint the crash in libavformat? Because IMHO that is a real,
> even somewhat serious bug in libavformat still, even if MPlayer didn't
> feed it quite correct data.

Writing header...
[avi @ 0xa900c0]dimensions not set

Program received signal SIGFPE, Arithmetic exception.
0x00000000006645c2 in av_frac_add (s=0x1485630, st=0x168dcb0, 
    pkt=0x7fffffffdbb0) at libavformat/utils.c:114
114             f->val += num / den;
(gdb)

-- 
Tobias						PGP: http://8ef7ddba.uguu.de