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What iDVD '08 Compression Options Really Mean
Authored by: withdave on Aug 15, '08 05:17:33PM

I used the compression term because all DVD videos are stored as MPEG2 compressed format and the relationship between the various codecs operates in an analogous fashion to compression. Yes, in pure terms it would be more accurate to use a phrase like 'optimal bit-rate' instead of 'compression', but the every-day iDVD user is likely to be familiar with zip files and the like. The higher iDVD '08 encoders yield smaller files with the same quality. Even though they are not intending to explicitly do compression, that is the result. Professional Quality fits my 2 hours (8 Gigabytes) of input video onto a single layer DVD, whereas Best Quality can only fit 70 to 90 minutes worth.

My experience using iDVD '08 is not extensive, but the impressions I get of its encoder tradeoffs fit with the remainder of your comments.

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What iDVD '08 Compression Options Really Mean
Authored by: Anonymous on Aug 19, '08 10:36:05AM
I don't understand why you're apologizing for referring to a lossy compression technique as "compression".

If you want more control over iDVD, just remember that iDVD is to Final Cut as iPhoto is to Aperture.

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