Xvid creates blocky artifacts! Help!

[david.dgc]

the comparison with the source video (that i ripped from the bluray to my pc) is made in my pc. And i don't see much difference in terms of levels and noise, only the blocks on my encode.

The correct answer would be "I don't see any difference in terms of levels".

Easiest way to know for sure.... encode something with black bars, without cropping them. The black bars should be completely black when viewing the original video (as black as if nothing is being displayed, not dark grey) and they should be equally black when viewing the encode. If they're not.....

I'm not saying levels are your problem, but they could be part of it, so I'd be remiss not to point out the potential there while you're trying to fix blockiness. Where in your sample are you seeing blocky problems? Just so I know if we're seeing the same thing.

There is some in the walls in the street scene (when the bus passes) and in the brown alley wall but i can accept that ones.

But the blocks on VanDamme pants are too much noticeable.

[Selur]

Don't think levels are the problems, I would go for 'wrongly configured LCD display' (i.e. too bright)

[hello_hello]

Whether it's levels or too much brightness, the blocking on Van Damme's pants is something I doubt I'd notice viewing the video on my TV, not unless I paused the video or I knew the blocking was there and went out of my way to look for it. The same applies to the blocking on the brown alley wall. I have to send the TV the wrong levels or crank up the brightness before either becomes very noticeable.

If you're using a PC monitor to view your encodes it still could be a levels issue. Which version of Windows and which media player are you using? If your video card has a setting to change the output levels for video, what's it set to? If you can, try setting it to "Full range" or "RGB 0-255" (however it's labelled). If the video picture suddenly gets darker then your problem is probably (at least partly) levels.

[david.dgc]

Whether it's levels or too much brightness, the blocking on Van Damme's pants is something I doubt I'd notice viewing the video on my TV, not unless I paused the video or I knew the blocking was there and went out of my way to look for it. The same applies to the blocking on the brown alley wall. I have to send the TV the wrong levels or crank up the brightness before either becomes very noticeable.

If you're using a PC monitor to view your encodes it still could be a levels issue. Which version of Windows and which media player are you using? If your video card has a setting to change the output levels for video, what's it set to? If you can, try setting it to "Full range" or "RGB 0-255" (however it's labelled). If the video picture suddenly gets darker then your problem is probably (at least partly) levels.

Well i burned the samples to a DVD and played them on my bluray and the blocks aren't as much noticeable as the pc but they are still there.

My OS is Windows 7 Pro SP1 and the player is VLC... The colors of my graphic card are already set to "Full".

[jagabo]

Use the video in this post:

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

and your graphics card's video proc amp settings to adjust the brightness and contrast.

[david.dgc]

Use the video in this post:

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

and your graphics card's video proc amp settings to adjust the brightness and contrast.

thanks