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Provide conversion table for quality settings

May 24, 2010 at 8:23 PM
Is there a conversion table that can tell me what the values in Vidcoder means in Handbrake values? I.e. The quality settings in HandbrakeCLI were from 0 to 1.00, but in Vidcoder they are from 0 to 51. Most guides out there use the Handbrake values, so it would be really nice to know how to convert them.
May 24, 2010 at 9:51 PM

If you're looking for something rough, I think a linear conversion would work. With x264, lower numbers mean higher quality so it would look something like this:

Quality = MaxQuality - QualityFraction * (MaxQuality - MinQuality)

So if you had a quality fraction of 0.55, it would convert like so:

51 - 0.55 * (51 - 0) = 22.5

I believe that HandBrake is also moving away from using the fractions/percents and going with the direct quality targets.

May 25, 2010 at 10:10 PM

Thanks for fast and informative answer!