[ogg-dev] Fixing ogg vorbis corruption caused by bad metadata

[Adam Rosi-Kessel]

Adam Rosi-Kessel wrote, on 6/30/2009 11:14 AM:
> Conrad Parker wrote, on 6/30/2009 11:05 AM:
>>> http://adam.rosi-kessel.org/bugs/liboggz/484/other_corruption.ogg
>>> Yet also won't play or process properly with oggz or hogg tools. Any
>>> ideas whether this is the same or different root cause? (In all of these
>>> cases, I'm reasonably certain that disk corruption is not an issue).
>> that one is entirely missing the comments data, and the second page is
>> incorrectly marked as continued. Not sure that helps with
>> understanding the problem, but I can confirm that it's broken in a
>> different way :-)
>
> Thanks. Is there some reason, in principle, that there couldn't be a
> tool that just extracted the valid packets and created a new valid file
> from there, discarding everything that is invalid? In other words, a
> generic tool that would do its best to make an invalid file playable again.
>
> If there's no reason in principle, would such a tool be easy to create
> by tweaking the existing code base? I've tried to do a little hacking
> myself to figure this out, but it seems like it's a fairly low level fix
> that's needed. All of the higher level tools (e.g. modules for Perl,
> Python, or Haskell) treat these files identically.
>
> I don't think I've done anything crazy with my files to get them in
> these states -- just used reasonably popular tagging tools that
> apparently have gone astray.

Hi All:

Anything I can do to keep this on radar? I'm not sure if it is really a 
bug -- perhaps at least a wishlist request. Will putting it in a tracker 
somewhere help?

Adam