Block noise

[rjc7394]

What is it that causes block noise?

I've tried encoding (and deinterlacing) a VOB and end up with decent quality (~ 1500 kbps and bits/pixel-frame >= .25) but have block noise in medium-high motion areas. I've tried many deinterlacers (kernel, area-based, Tdeint) and XviD (1.1) parameters I've used were mainly default except for:

Level: AS5
Quantization: (Both H263 and MPEG)
GMC
Motion precision - 6
VHQ - 1
Overflow Treatment: 0%, 11%, 5% (in that order)

[Sharktooth]

it needs more bits in high motion scenes.
try a higher VHQ and VHQ for b.frames.
try jawor's 1cd or eqm v3ulr custom matrices.
try a combination of the above.

[rjc7394]

I've used Tdeint and I'm left with some interlacing and I have no clue what to tweak next. I've read Physics/Calculus books that were easier to understand than those instructions. There are so many features in that deinterlacer it looks like it's a jack-of-all trade.

Which parameter is the decomber which you can see when map=2? I thought it was CTHRESH but that can't be tweaked much (6 to 12). I don't notice much of a difference between H263 and MPEG Custom levels but that's probably my video source which is slightly above average.

This is what I have now:

loadplugin("C:\Tools\dg146\DGDecode.dll")
loadplugin("C:\APPZ\tdeint_25\TDeint.dll")
mpeg2Source("C:\G4T\VIDEO_TS\AN.d2v",cpu=6)
TDeint(order=1,type=2,full=false)
Lanczosresize(512,384)

[Sharktooth]

blocks are not due to interlacing.
try what i suggested in my previous post or rise the bitrate.