View Full Version : 'walking ants' and 'wall moving' effect on a pal encode
gelizy
31st July 2007, 00:46
Hi I encoded a sample of this video but in the begging I can see some strange effects like walking ants..the wall or portions of it is moving..Im confused because I used in the right way the script bellow:
LoadPlugin("C:\Program Files\AviSynth 2.5\plugins\RemoveGrain.dll")
LoadPlugin("C:\Program Files\AviSynth 2.5\plugins\FFT3DFilter.dll")
DGDecode_mpeg2source("C:\Documents and Settings\Administrateur\Bureau\nelly.d2v")
Import("C:\Program Files\AviSynth 2.5\plugins\mvbob.avs")
mvbob(correctTh=0).selecteven()
crop(14,2,-14,-4)
Lanczos4Resize(704,576) # Lanczos4 (Sharp)
#denoise
fft3dfilter(sigma=1.5, bt=5, bw=32, bh=32, ow=16, oh=16 )
removegrain(mode=2)
trim(50,300)
Here is a sample of the video maybe someone can help me out to remove those effects pls
http://www.sendspace.com/file/k0m1b1
gelizy
1st August 2007, 13:25
anyone can help pls :(?
jeffy
1st August 2007, 23:05
anyone can help pls :(?
I have downloaded the encoded video and when playing it with Media Player Classic or VLC I cannot see anything unusual.
If you want someone to judge better, it would be good to post a short sample of the original video as well. Preferably the same :)
jeffy
1st August 2007, 23:08
Maybe you mean light interlacing artifacts.... sort of bobbing or shimmering... well someone (Dideé, can you give them a hand please?) else please advise.
gelizy
3rd August 2007, 00:54
well video just seems to be good..but if u look better on the wall and u will see some parts of it moves lol and a effect like some walking ants can be saw,and also if u pause vid and go frame by frame u willI guess the sample I used was too small gonna upload a bigger one these days...and ok I'll upload a part of the vob too but vob is really fine only after encoding I can see those effects..+ I think mvbob doesent leave interlaced artifacts with the script I used mvbob(correctTh=0).selecteven() :)
DarkZell666
3rd August 2007, 12:12
I'd say the "moving-wall" problem is due to the relatively low bitrate (it is 1200kbps but there are a lot of moving objects in there).
gelizy
3rd August 2007, 19:59
finnaly some one who saw em lol I can show u other encodes where I used bitrate 1000(27 mb) and the video was very good :)
Don't think its about bitrate since x264 can work better than xvid at lower bitrates :p
foxyshadis
4th August 2007, 11:30
If you mean the shimmering at the bottoms and tops of edges as the camera moves, that's an effect of things like mvbob. You can try mcbob, which was specially designed to mitigate those, but it's 3 times slower than mvbob.
gelizy
4th August 2007, 13:02
slower=better in encoding no matter the time :) ...
I'll also give mcbob a try ty foxy..was mcbob tested in comparission with mvbob to see wich one has better results?
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