The quality at a given CRF value isn't necessarily the same when using different x264 speed presets, although you might need to compare a very fast preset with a slower one to see any difference, but given the different Handbrake presets don't use the same x264 speed presets by default there's no guarantee the same CRF value will produce exactly the same quality for each Handbrake preset. The profiles control the efficiency of the encoder in lieu of using the advanced settings yourself. Quality is still controlled by the CRF setting. That's a pretty good explanation but the profiles don't really sacrifice quality. It allows for I4x4 blocks (smaller macroblocks for coding efficiency on I frames), custom quant matrices. 'high' uses High profile, and 'medium' x264 settings.

'normal' uses Main profile, which means CABAC and b-frames, but uses 'very fast' settings for x264, which makes some compromises on compression and quality for the benefit of conversion speed

It's a basically 'dumbed down' version because some devices aren't powerful enough to play more advanced features It means lower quality at a given bitrate or filesize. It's a lower compression format suitable for older devices. 'universal' uses Baseline profile, which means no CABAC, no b-frames. These are basically tradeoffs for conversion speed and quality, and ensuring device compatiblity In general terms it means fast, medium, slower for conversion speed and compression/quality wise it's low, medium, better I've looked at this,, which gives technical explanations, but was does this generally mean in terms of file size, output quality, etc.?Ĭould someone, please, in general terms, explain the difference among Normal, Universal, and High Profile? I've used Handbrake for awhile, and I've just had a look at the latest version of VidCoder.īoth have settings for Normal, Universal, and High Profile presets, as well as other device-specific ones that are pretty self-explanatory.

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