Xvid creates blocky artifacts! Help!

[david.dgc]

Hi everyone,

Xvid is creating blocks in my avi files. it appears in the highmotion frames and i'm not seeing the cause of it.

i removed all the filters that i was using to see if it was the cause, or where comes fom the blocking artifacts, but i don't guess.
I did a search on the forum and i found that it can be solved by activating "closed GOP" but i don't find that option in xvid settings...



The purpose is create backup file's -- AVI 720p Xvid AC3 with bitperpixel ~0.200 -- of my bluray collection wich can fit cheap dvd-r's. (I know that x264 is better but it's a question of standalone compatibility)


I created a sample of 30sec - 17mb with only crop and resize where you can see the blocks:

http://www.crocko.com/59E30EB512E44D329245CA4202A3ACBD/test.avi



The screenshots of the Xvid settings:


http://thumbnails46.imagebam.com/18516/d17b97185155975.jpg (http://www.imagebam.com/image/d17b97185155975)

http://thumbnails70.imagebam.com/18516/ab9288185155977.jpg (http://www.imagebam.com/image/ab9288185155977)

http://thumbnails26.imagebam.com/18516/7e51a7185155981.jpg (http://www.imagebam.com/image/7e51a7185155981)

http://thumbnails42.imagebam.com/18516/5b89cd185155986.jpg (http://www.imagebam.com/image/5b89cd185155986)

http://thumbnails69.imagebam.com/18516/e2057b185155989.jpg (http://www.imagebam.com/image/e2057b185155989)

http://thumbnails39.imagebam.com/18516/b51c37185155995.jpg (http://www.imagebam.com/image/b51c37185155995)






The logfile of the rip is attached




this problem is hauting me for days.. please help me. i shearched a lot in the forum but i don't seem to find a solution.
thanks to all that can help me. :)

[david.dgc]

After some new tests i found that the blocks cames from the resize filter.
I removed the resizefilter and the blocks gone away. now, i tested lanczos, spline, bicubic, etc. and all of them re-introduces the blocks...

Anyone knows how i should use the resizer to avoid blocking?

[david.dgc]

here it is the script that i used for this movie before removing the filters to avoid blocks:



Crop(0,0, -Width % 8,-Height % 8)
ConvertToYV12()
FFT3DFilter(sigma=2.0, plane=0, bw=48, bh=48, bt=3, ow=16, oh=16, sharpen=0, interlaced=false)
Sharpen(1)
Crop(0,4,-0,-4)
Lanczos4Resize(1280,720)
Tweak(sat=1.10)


I'm newbie in using filters, so probably i'm making stupid mistakes.. :)

[mike20021969]

You got more help here: http://forum.videohelp.com/threads/345384-Xvid-creates-blocky-artifacts!-Help!

What's with that crocko file hosting site? People don't want to wait or pay/pay for quicker downloads.

Try MediaFire instead.

[Didée]

The most major part of the problem:

Sharpen(1)

Don't do that.