Jorel ?
:arrow: did you verify that this is the XVID codec taht is used now as YV12 decompressor, YES OR NOT :?:

If it is still ATI YV12 that does the job it's normal to have the picture like you have.

ok Kwag,ok Phil(i saw your last post Phil)!

now how can i trash the codec that i don't want to use?
(ati in this case)
i want test with xvid alone and do pictures to compare!
:)

Do you have DXMan from AnalogX ? Use it : you can select a codec and remove it.

http://www.analogx.com/welcome.htm

Ah, so it interpolates the chroma values? That can't be good...

Actually, I first noticed this in TMPGEnc, then verified it using VDub... either way, using ConvertToYUY2() gives results as they're supposed to look (or at least as the original looks, I suppose that could be wrong too). The ATI YV12 codec seems to clamp output values, I'm guessing to [16,235]. I haven't done any analysis other than using the histogram in VDub for a quick check.

Will TMPGEnc always convert the input video to RGB24? The documentation for the colourspace-conversion functions in AviSynth seem to indicate this: "There are no known advantages of using RGB24 (except that TMPGEnc requires RGB24 input)." If so, then it might be better to use ConvertToRGB24() instead of ConvertToYUY2(), avoiding unnecessary colourspace conversions...

8O :screwy:
:lol: :lol: :rotf:

Phil,
i download DXMan, he find thousands but can't see the ati codecs!
:lol:

yes it is.
So if you really want to add a convert at the end of the script, it should be better to had a ConvertoToRGB24.

@Jorel
You don't know how the codec came on your PC ? You should be abble to remove it if you know who put it on the disc.

yes,i know the name.....and was me that put it on the disk!
:lol:

wait a little, i will "kill" it now!

:wink:

ok!
the system call for reboot after i remove the ati codecs.
done!

now i have "XviD MPEG-4 Codec" loading the script:
mpeg2source("D:\dvd teste\a1.D2V")
#converttoyuy2()

nothing is different with or without converttoyuy2(), the quality is the same but
:arrow: better than using ati codecs, the image isn't "washed".

correct me if i'm wrong:
means that using only the xvid codec(without converttoyuy2()) the quality will be better than ati codecs
:arrow: and will encode faster too!
i read somewhere that converttoyuy2() is slow, right?
:wink:

No need to correct you ;-)

thanks Phil, Kwag, incredible and BobNET :!:

in only one day i got tons with your help.
amazing team-work!

:D

How did you remove the ATI codecs? Just click "Remove" from the Control Panel?

And have you had any problems since removing them?

very good questions BobNET and i have surprises:
yeah, ati codecs was removed from control panel!

after remove the ati codecs and removing the converttoyuy2() from the script,
cce show a big advertence:
:arrow: " :!: Couldn't find appopriate video codec for 'YV12'. "
8O :?:

i "back" the converttoyuy2() line in the script....
now another surprise:
-->the image is cool (the same as ati codec) and

:arrow: cce needed ~12% more time to encode with xvid + converttoyuy2()
than using ati codec + converttoyuy2()

:grenade: :crashed:

i loose the ati codecs in ati player-capture mode (obvious)!
:arrow: and can't open anything that need "video codec for 'YV12'. "

:douh:

:?
and now?!?!?!

edited>
"cce needed ~12% more time to encode with xvid + converttoyuy2() "
is the correct % value!

So not really an improvement, then?

:douh:

Did you reinstall XviD after removing the ATI codecs? Maybe the registry entries (or whatever else) that are needed for XviD to decode YV12 don't get added if there's already a YV12 codec on the system...

I'd try it myself right now, but I don't want to hose my system for video captures in the middle of a TV season... :expert:

improvement ?

no BobNET, it's ~12% slow than with avi codecs...the performance is worse!

and yes,i uninstall xvid codecs(reboot)
run "regvac" and "evidence eliminator" to clean traces,
after this i re install xvid again (reboot),
then i did the tests and got the results posted!

like i ask before,or i or my system is mad?!?!
now, without converttoyuy2() in the script, CCE don't work :!:
and i'm using 266 that don't need yuy2 convertion like Phil posted!

some more comments please!
i'm lost and :? :? :?

D'oh! Looks like my next project will use ConvertToRGB24() at the bottom to avoid both muddy colours (due to ATI's borked YV12 codec) and also needless colourspace conversions in TMPGEnc (since it's going to convert to that anyway)...

I'll play with my settings sometime next week, when I'll have time to fix things in case they break horribly... :crashed:

ConvertToRGB24() :?:
8O

don't do that,it's worse of all,really slow...i had tryed ConvertToRGB32() too!
horribles performances!

:lol:

For TMPGEnc I think it's probably the best choice (at least in the case where you're using YV12 with the ATI codecs, like us)... it always converts to RGB before encoding for some reason, so if you use ConvertToYUY2() then:

YV12 -> YUY2 -> RGB (in TMPGEnc) -> (encode to MPG) YV12

but with ConvertToRGB24():

YV12 -> RGB (in AviSynth) -> (encode to MPG) YV12

so you do one less colourspace conversion. Plus you get to control the conversion in your script instead of worrying about what TMPG will do...

But this is all theoretical since I haven't done any tests yet :-D

I don't know if CCE expects RGB input or not. I'd guess no but I'm not sure (I should get the trial and test it, too)...

well, i will restart everything...
:screwy:

:ideasmiley:
reinstall the originals ati codecs that came with ati all in wonder cd
and do some tests for performance and quality.

after this i uninstall ati codecs again and install xvid to do another group of tests.
if i got the same the results, :eeks:
i will stay using the ati codecs that came with the drive !

can't think in better way to remove this doubts but all ideas are welcome!

:)

edited>
maybe i wasn't clear BobNET:
converttorgb24() or converttorgb32() are slow than converttoyuy2()
in CCE with or without xvid codec :!:

Shure Jorel cause CCE expects YUY2! :wink:
And if your avs finally results in YUY2 NO MORE Xvid/ATI codec, means YV12 codec is needed (see the File Information in Vdub)

So lets resume:

- CCE expects YUY2

- TmpgEnc expects RGB24 (thats also a reason why TmpgEnc is slower than CCE ;-) )

- Mencoder expects YUY2 (as the log says it )

incredible,
i think that you found the "key" of it all!
8) :D

nothing is wrong with my system and happen just like i posted.
i will install and uninstall all codecs again to remove all doubts,
and to test the quality and performance!

and one more detail that i'm thinking after read your post:
(remember: xvid is instaled,ati codecs was uninstaled)
doing it now (writing after each result) :

loading the script WITH converttoyuy2()
in vdub information i got:
Decompressor: YUV 4:2:2 (YUY2)... :arrow: work in CCE
:arrow: is the same that i posted in the first page
of this thread after your first post incredible!
was using the ati codec with converttoyuy2() in the script
the image is better!!!

loading the script WITHOUT converttoyuy2()
in vdub information i got:
Decompressor: XviD MPEG-4 Codec... :arrow: don't work in CCE

for this reason works in CCE using XviD or ati codec WITH converttoyuy2() in the script:
:arrow: Decompressor: YUV 4:2:2 (YUY2)
just like you wrote:
" CCE expects YUY2 "
right?
please, more comments!
:wink:
very cool!