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Old 13th December 2001, 16:18   #10  |  Link
MickImoto
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Join Date: Dec 2001
Location: Spain
Posts: 13
Two passes better than only one.

Hi again.

In the beggining, fast motion was the best codec for fully action movies. But is clear that movies usually have slow motion scenes. Then someone make a system to mix both codecs in the same video string. And now, DivX 411 codec includes slow and fast capabilities in microcode. By this, 4.11 codec encodes a whole movie with good quality in slow scenes as well as fast scenes.
But the best method uses two passes. In primary one, the codec write statistics about every scene to apply this values in second pass. This method balances quality and size to store every frame with the best ratio, and can save extra memory in static or slow scenes to increase bitrate in complex ones.

I always use this method. And if I get wrong with bitrate and film grows a lot, I use statistics made in the first pass to make another second pass and correct bitrate.

And give a chance to Bicubic Filter. Itīs really great.

Byeeeeeeeeeeeeeeee.

Mick Imoto.
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