blocky video

[apratim_pranay]

hi

i use MeGui now to encode my DVDs to Xvid

keep my birate around 900-1000 and reso at 640xXXX

but i get very bad blocky video in dark scenes and smoke,fire etc areas of the video !!

i dont use adaptive quant,qpel,trellis

i use VHQ for Bframes,chroma motion

does the resize filter have anything to do with it(i use lanczos(sharp))??

thakns in advance

i've tried qpel,trellis,adaptive didnt make much of a difference

[CWR03]

Why did you cross out the rest of your resolution? If for example, you're encoding at 640 x 480 with a bitrate of 900, you're using way too large of a resolution for that bitrate. Smoke and fire are particularly difficult to compress well. Try either a higher bitrate or a smaller resolution.

[apratim_pranay]

i actually use the suggested vertical resolution
with horiz rez 640
(vertical rez is usually around 384,336 etc)

so for a 640X384 etc whats the optimum bitrate or

whats the optimum rez and bitrate for good compression(around 750 to 800MB for a 1hr30min movie)
and good "full screen viewing"

for me good full screen viewing is more important than file size

thanks

[Daodan]

At that resolution 1000kbps should be fine (it's above 0.2 bpp which is good). The problem I think are the settings for xvid you are using. I think you may be using too fast settings. Also use some good denoiser etc to increase compresibilty, also a custom matrix for that bitrate maybe.

[check]

Are you using 2pass?

[apratim_pranay]

yes i use 2pass

and tell me about "some good denoiser" i shud use??

[Daodan]

Heh, depends rather a lot on the source. Is it DVD, capture from TV, etc. But I guess FFT3D or degrainmedian should be good to use with most sources, usually with a lower strength than default.

[apratim_pranay]

its almost always DVD