[theora] Splitting Theora encoding into multiple tasks for Thoggen

[Aaron Whitehouse]

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Hello all,

I have been thinking about multiple core processors and how Thoggen
(http://www.thoggen.net) encodes DVDs to Ogg-Theora files.

I was intending to file a feature request that basically suggested
dividing the total size of the target DVD by the number of logical CPUs
and encoding each chunk of DVD as a separate task so that encoding could
take place simultaneously.

This would result in a number of separate Ogg-Theora files that would
then need to be concatenated together. It is my understanding that this
would be fairly straight-forward, but wanted to check it with this list
first. Can anyone see any issue with this from a Theora point of view?
Am I correct that a file produced in this way should not appear any
different to the end user watching the file?

Thanks for your help,

Aaron
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