Re: Variable Quant + Variable Bitrate (Can it happen?)

Hello Lee,

> Could this not be determined "on the fly" during a single pass encode
> to allow instead of a fixed quant but rather a variable quant + 
> variable bitrate mode? Which would use the lowest needed quantization
> for a macro block while still allowing for higher ones to be used when
> possible.

> This way it is possible to have a high quality single pass fixed quant
> 2 without wasting bits.

I think the best way to achieve this is to simply use constant
quantizer. My personal feeling is that by doing this you can achieve
much "nicer" output, especially when the scene moves quickly, than
using the 2pass approach.

Give it a try.

Because I think there is nothing similar to your request in xvid
codec.

Have a nice day


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   Picasso Pablo    (http://picasso.atrip.sk, ICQ: 174412909)