[ogg-dev] How to fix broken ogg/theora files

Conrad Parker conrad at metadecks.org
Wed Dec 3 17:16:37 PST 2008

2008/12/4 Oliver Frommel <ofrommel at linuxnewmedia.de>:
> Hi,
>>>> Thanks for the suggestion. Unfortunately it did not help completely.
>>>> When we edit the original file with oggCut and then use oggz-validate we
>>>> get an error message like the one posted before. Now oggz-sort will fix
>>>> the file so oggz-validate doesn't find any errors. However ffmpeg still
>>>> produces and error with it:
>>>> ffmpeg -i rlang.ogg -ab 56 -ar 22050 -acodec libmp3lame  rlang.flv
>>>> ...
>>>> This is the same error we had before fixing the file with oggz-sort
>>>> Any other suggestions?
>>> that's very interesting, can you please post a URL to the files?
>> Thanks for your help. My colleague has kindly provided the file in
>> several stages of production. You can find them all here:
>> http://streaming.linux-magazin.de/~oliver/test/
>> The file that got corrupted by oggCut and we tried to fix with oggz-sort
>> is called "edited_with_oggcut_and_fixed_with_oggz-sort.ogg"
> Can we hope for any progress on this or is this issue closed?

Sorry for not replying earlier. This issue was still in my current queue,
but other work had to take priority the past two weeks.

Once we work out what the issue is, I (or someone else) can make a tool
to fix the existing files. However the cause of the problem will also
need to be fixed, whether in oggCut or ffmpeg.


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