Wolffy2hk wrote:Whats the difference between the two?
In a multipass encode the encoder generates data about each frame of the video being encoded, which is then used by the encoder on subsequent passes to affect bitrate distribution.
The advantage of multipass encoding is that it provides the encoder with more information about the video stream, which it can use to make more accurate predictions of (say) the cost of encoding a particular frame at a particular quantizer. The encoder can then optimize this cost. Global vs. local.
See also: http://www.animemusicvideos.org/guides/avtech/xvid.html
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