[annodex-dev] Oggplay plugin crashes firefox with badly formed ogg file

Conrad Parker conrad at metadecks.org
Tue Feb 12 04:15:15 PST 2008


Hi,

digging up this oggplay crash report from December:

On 17/12/2007, Denis Crowdy <dcrowdy at gmail.com> wrote:
> HI all,
>
> While testing arkaiv (http://svn.annodex.net/arkaiv), which uses
> mod_annodex to serve annodex media, and the oggplay plugin to play
> them back, the following ogg video crashes firefox spectacularly (as
> in instant application segfault and wipeout):
>
> http://dcrowdy.googlepages.com/msko_clip1.ogg
>
> This file was created from a longer source file using hogg chop.
>
> ogginfo shows that the file is obviously badly formed, but ogginfo
> didn't show that for the source file.
>
> I have tried hogg chop on other source files and there have been no problems.

I just tested this file with current oggplay from svn, and it plays ok
here. The issue was probably fixed in oggplay during the last month.
Of course it could be due to something specific to your system --
Denis, could you test the same file again with current oggplay?

As for the warnings from ogginfo, they are warning about gaps in the
page sequence numbers corresponding to the ogg pages which have been
removed from the file. For a while I was worried that libogg was
rejecting the pages, which would mean that a chopper would have to
renumber the pages (and thus recalculate all the checksums). However
this doesn't seem to be the case.

That file also plays ok for me in gstreamer (totem) and xine.

cheers,

Conrad.


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