trying to make a dvd with this file

[smartel]

here it is again with no color ajustments besides the Tweak(sat=1.1)

[smartel]

ColorMatrix(hints=true, threads=0)
#deinterlace
#crop
#resize
#denoise
AssumeTFF()
ConvertToYUY2(interlaced=true)
crop(64, 20, 0, -20)
SeparateFields()
odd=SelectOdd.Convolution3D (0, 6, 10, 6, 8, 2.8, 0).BilinearResize(720,240)
evn=SelectEven.Convolution3D (0, 6, 10, 6, 8, 2.8, 0).BilinearResize(720,240)
Interleave(evn,odd)
Weave()
#denoise
Tweak(sat=1.1)coring=false
ColorYUV(off_y=-6, gain_y=-5)
ConvertToRGB32(interlaced=true) #only for TMPGEnc +

I did samples again using different encoders

with avs2dvd the AR seamed F**cked up i don't really know why

and no color tweaking other than the scipt

they look about the same but too dark i guess my scipt could have been a lot better

i did this last night guess i was just a little too much tired

shit !

Back to square one

[jagabo]

Nevermind.

[smartel]

thanks for your patience , got to work on mine

[jagabo]

I still recommend you skip the zoom.

[smartel]

her it is with this :

ConvertToYUY2(interlaced=true)
SeparateFields()
odd=SelectOdd.Convolution3D (0, 6, 10, 6, 8, 2.8, 0)
evn=SelectEven.Convolution3D (0, 6, 10, 6, 8, 2.8, 0)
Interleave(evn,odd)
Weave()
#denoise
Tweak(Bright=1.1, Cont=1.1)
Tweak(sat=1.1) coring=false
ColorYUV(off_y=-4, gain_y=-4)
ConvertToRGB32(interlaced=true)

[jagabo]

Horizontal edges are much sharper now that you're no longer zooming. But the levels are still off:



You want to keep the levels out of the brown/yellow areas. There's no reason to use both Tweak() and ColorYUV() to adjust levels. I would adjust levels before denoising. If you want to bring out more detail in the dark areas use a gamma adjustment.

[smartel]

ConvertToYUY2(interlaced=true)
ColorYUV(gamma_y=256, off_y=-16, off_u=5) #no tweak

for the black levels looks ok
if i could do the same with the whites i'll be happy

I'm previewing my samples with both zoom player and media player classic

[jagabo]

The black levels are terrible. Is that what you want the video to look like? The white levels are about right. What's the off_u=5 for? That will cause a color shift. If you want to increase saturation with ColorYUV() use cont_u and cont_v. Setting both to 25 is about the same as Tweak(sat=1.1).

[smartel]

ConvertToYUY2(interlaced=true)
ColorYUV(levels="PC->TV")
ColorYUV(autowhite=true)
ColorYUV(gamma_y=128, cont_u=25, cont_v=25)

I swear i could extract some tones out from those whites (skin , shirt/guitar)

[jagabo]

I have no idea what you're trying to do.

ColorYUV(levels="PC->TV") is about the same as ColorYUV(gain_y=-36, off_y=16).

[smartel]

me neither , i'm completely lost on terminology

just bassically trying and trying
and workout those whites , nothing seems to work

maybe those crushed whites are just lost and i have to live with it

i'll review again your suggestions and try to come up with someting good

and thank you again for your time

[jagabo]

You will never get any detail from the blown out whites. What you can do is prevent the slightly darker whites (those between Y=235 to Y=255) from blowing during your processing or when watched on TV. For example, say a row of pixels originally looked like this:

235, 245, 255, 265, 275, 285, 295, 305, 295, 285, 275, 265, 255, 245, 235

That's a big triangular peak. But when they are saved in a video file they can only range from 0 to 255. So you get:

235, 245, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 245, 235

The top of the peak has been cut off at 255. There is no way of restoring the original data because there is no way of knowing what was there.

At the low end you can adjust the black level so that blacks are black, not gray, but not so dark that you crush other dark details.

[smartel]

needs a smouth shift from 0-255 to 16-235 (0=16 , 1 around 17 ... 254 around 234 . 255=235)

would that be the ideal goal ? is it possible ??

[jagabo]

Assuming the MPG file you included in the very first post is representative of what you are working with my original suggestion of ColorYUV(off_y=-12, gain_y=-10) is about what you want. That video doesn't range from 0 to 255, it ranges from about 32 to 255. off_y=-12 moves the entire graph down (left in histogram()) by 12 units (12 units is subtracted from the brightness of each pixel), basically adjusting the black level. gain_y=-10 shrinks the range by about 4 percent. Ie, the brightness of each pixel is multiplied by about 0.96 (256-10)/256. After that the bulk of the video ranges from about 16 to about 235.

Beyond that I think it needs a little more saturation. But I wasn't there I don't know exactly what the colors looked like. I don't know if it needs any white balance. Some of the lights appear to be reddish so I would expect the whole scene to be a bit red/yellow. But that's largely a matter of taste or artistic latitude. I don't think it really needs denoising but I tend toward leaving more noise in than many others. Too much denoising can lead to posterization, make people look like mannequins, make a woolly sweater look like silk, etc.

[smartel]

i'll have to do multiple samples and burn them to dvd and review them on TV (old panasonic 27'')

and again thank you for your input

p.-s. : and that's only the first part of the project ,
i have another sequence from an handheld cam in .ASF format
i want to edit out the best parts and make a good multicam flow

[smartel]

with my samples in zoom player a get an error : floating point operation division by zero !?

[smartel]

ColorYUV(off_y=-12, gain_y=-10)
ColorYUV(gamma_y=160, cont_u=25, cont_v=25)
ConvertToRGB32(interlaced=true)

so would that be it !?

did i post too much samples or is that ok ?

[jagabo]

Your brights are still too bright and your darks aren't dark enough. Are you even bothering to look at your results?

[smartel]

it's more the brights that i'm concerned about .. , got more tweaking to do

and for my taste i don't think the darks should be that dark

or maybe it's just my pc monitor that not too well ajusted

now thinking of doing all of this into virtualdubmod , at least it'll give me instant preview to help me

[jagabo]

You can check your monitor with a calibration image. Try the following:



You should be able to see almost every bar. I can barely see the 5 bar, and have to use my imagination to see the 2 bar. But I can see all the others. The background should be full black in the top half, full white in the bottom half.

After adjusting your monitor and Desktop you need to adjust your graphics card's video proc amp using a video calibration chart. This post:

https://forum.videohelp.com/threads/326496-file-in-Virtualdub-has-strange-colors-when-o...=1#post2022085

has a similar calibration chart as a DV AVI file. But there is a slight difference. The bars from 15 to 0 should all be black, and the bars from 235 to 255 should all be the same shade of white.

[smartel]

turned out that my monitor was off my whites were blue a condenser was probably burned out