blocky svcd

[mategal]

When viewing an svcd on my standalone I get blocky effects if there is a dark ( black ) still screen in the movie. it usually only happens when the image is dark, or the bitrate is too low. But it's not only the bitrate cause it also happens when normal ( around 2k avg ) bitrate is used.
I usually manually letterbox my movies and the black letterboxing is normal but the inside is horrible. If something should be black than instead its grey, shades of black... etc and of course blocky

So I use 3 pass cce ( sometimes 2) min rate is 800 and the source doesn't matter either, the bug happens with dvdrip high res xvid and low res vhs=> old divx also.

Is it some codec or what?
pls help me

[DJRumpy]

Your Luma values have probably been squashed during the encode process. Make sure you set the 'Luminance Level' in CCE to '0 to 255'. This will prevent it from squashing your luminance scale, to make it comply with the TV standard of 16-235.

How do you get the file to CCE? Are you using DVD2AVI?

[mategal]

Thanks I'll give it a try. I havent touched that button yet in cce so this must be the problem.
you wrote that TV standards is 16-255
Will the svcd work on my set if I use the full scale color instead?

Anyway I use vdub for frameserving to cce
Do I need to touch color depth in vdub?

Thx for the tip!

[D_Knife]

I've never had a problem with the the colour range set to 0-255 - mind you I'm using PAL not NTSC so I not 100%

And no you don't need to set anything in VDub

[DJRumpy]

Your TV isn't capable of displaying the full chroma range of 0-255. During the encode process, some programs can squash the range to make it 'fit' the TV standard. When this happens, you get the sparkles in dark areas. Your bright area's will also appear washed out, as if they lack detail.

Ideally, when you go from source to final MPEG, your color range shouldn't change, unless it started with 255 colors to begin with.

Someone help me here. Doesn't VirtualDub have a Histogram view or tool that will display if your chroma scale is below 16, or above 235?