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Hi,
I thanks everybody for his answer, and especially you for the time you
took to explain me this MPEG stuff.
I followed your recommandations and choosed a more static part of the
movie, and did the same operation. Then, the image qualitity was good
enough for my will.
But I did the same thing on my full movie, encoding the same small
extract embeded in my completely edited sequence, and again the quality
was very poor.
So the problem is not purely mpeg encoding; there is likely some
parameter or effect I badly tuned in Cinelerra while editing.
I'll spend some time on this problem, hoping to find out what it is.
Else, I'll come again for help, when I'll have more details.
Thanks again,
Yannick
PS: The texture is a Povray "marble" texture with a quite simple normal
texture that creates some small horizontal bumps.
[EMAIL PROTECTED] a écrit :
> On Mon, 11 Jun 2007, Yannick Patois wrote:
>> Most of the texture is lost in all rendered images...
>> Thanks for any suggestion,
> I also wonder if your requirement that the texture be preserved is really
> reasonable. You've got a complicated pseudorandom texture (looks like
> Perlin noise, for instance from POV-Ray), which won't compress well at the
> best of times, and you're trying to change it pretty much completely every
> single frame. Information theoretic considerations mean that it's just
> not possible to really do that well, no matter what algorithm or settings
> you use. You are trying to fit far more than 8600kbps of entropy through
> an 8600kbps pipe.
- --
_/ Yannick Patois _________________ Address (home) __________________
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