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View Full Version : convert to yv12 in *.AVS (QuEnc mode)


begu
14th May 2004, 09:01
Hi,
this might be 'stupid' question, but it bothers me.
So:
is it necessary to keep the "convert to yv12 ()" in AVS script, when using Nic's nice QuEnc?

As far as I understand, the QuEnc accepts (requires?) yv12 input. And the AVS script using the latest MPEG2DEC (decodefix 110) outputs yv12.
So why to convert yv12 to yv12 ?

Or maybe the avisynth detects that the conversion is not necessary (the input and output are the same) and will not do the conversion.

Thanks for info in advance.

wmansir
14th May 2004, 09:04
I don't know about your other quesions, but AviSynth is smart enough to skip the conversion if it is not needed.

Wilbert
14th May 2004, 13:01
s it necessary to keep the "convert to yv12 ()" in AVS script, when using Nic's nice QuEnc?
Nope. Assuming your source is YV12 of course.

As far as I understand, the QuEnc accepts (requires?) yv12 input.
Yup (and there are no internal color conversions).

And the AVS script using the latest MPEG2DEC3 (decodefix 110) outputs yv12.
Yup.

So why to convert yv12 to yv12 ?
Only necessary if your source is not YV12 (captures and other stuff).

jdobbs
14th May 2004, 19:18
But as was mentioned... if the source is YV12 and the output is YV12, there is no negative effect. In future versions of DVD-RB you may find other sources than DVD as an option ;) -- this makes sure that the conversion is done when it is needed.

begu
17th May 2004, 08:34
Ok, thanks for nice info. I guessed right: the avisynth is 'clever' enough not to do the conversion when not needed.

jdobbs: great to know that someday some other source than DVD might be used :)
And thanks for this program, I feel I should donate a little :)