Gray dot's while encoding absolutely white area

[gennadii.mog]

Hello everyone,

I tried to encode absolutely white area with h264 encoder. As a result I had a gray dots on white area.
If broadcasting note absolutely white area then ok.
Does anybody have the same issue? How I can fix this problem?

Thanks,
Gennadii

[Dark Shikari]

Encoder used?

Encoding settings used?

Source screenshot?

Encoded screenshot?

Output stream?

We're not psychic, you know.

[gennadii.mog]

Encoder used?

Encoding settings used?

Source screenshot?

Encoded screenshot?

Output stream?

We're not psychic, you know.

In the link you can find the example of video from desktop frames.
http://dl.dropbox.com/u/1297229/video_h264_bad.mp4

[nm]

It doesn't look like an encoder error. More likely a problem in capturing your "desktop" in the first place. What exactly are you doing here, and what tools are you using?

[LoRd_MuldeR]

Looks like he's capturing at 256 colors and the "dots" we see are the result of the required dithering ;)

http://upload.wikimedia.org/wikipedia/commons/f/f3/Dithering_algorithms.png