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View Full Version : Global Movement Jaggies?


DarkestGenesis
1st November 2005, 04:53
I first posted this along with other questions on another forum, for some of my answers they simply referred me here, to doom9. So here I am, I waited my 5 days and USED the search button. I believe what I have in my encode is jaggies/aliasing. Obviously a filter of a sort would take care of that. From what searching revealed, I don’t think there is much to use with VirtualDubMod. I could be mistaken, but I saw mostly avisynth scripts only.

Anyways, here is a link to a short clip of the series I would like to eventually complete. But I can’t start until I have everything squared away correctly. The series is an American cartoon, Invader Zim, sourced from DVD that I own. I’m extracting separate chapters as one vob file and demuxing the AC3 sound and then encoding the video. Afterwards I’ll transcode the audio to OGG, or just mux it back with the final avi into a mkv container, because .avi is just plain stupid.

http://download.filefront.com/4280709;354c956dfecf69e17a58dd9dacb070bd03bb93a577ece4a5cbf49ccdc33f150bc0d8f2bb4dc63b52

As you watch the clip, pay attention to the upper (light green) portion of the desk, and then the ceiling at the light structure. As the screen moves, the desk and lights…they jar and you can see pixilation or little blocking or something. I have no idea what this is other than jaggies…could anyone offer any help?

DarkestGenesis
1st November 2005, 05:46
please don't post such dumb questions....

Way to give a new poster a good first impression.

IDEA: If you have nothing helpful to say don’t say anything.

I blatantly described what I think the problem is, I just don’t know what kind of filter or script (if applicable) can fix it. And yes, incase anyone asks, I have already deinterlaced the material to be encoded, with a filter provided by VirtualDubMod. So once again Moron, how about you refrain from posting such stupid replies.

CWR03
1st November 2005, 11:16
Can you upload a segment of the same video in its raw format? From what I can see so far, it looks like you could have encoded it as 23.976 instead of 29.976, judging by the text scrolling across the screen, which alone may solve that problem.

*.mp4 guy
1st November 2005, 16:05
Those are interlacing artifacts, A lot of material on dvd's is encoded interlaced. interlacing is when each frame of a video sequence is made up of two different fields, sometimes the fields are not of the exact same time, so half of your picture is a little ahead or behind of the other half. If the picture is perfectly still it will look fine, but the more motion there is the more obvious the time differential between the fields will be. You should look for a guide on interlaced content particularly on interlaced cartoons. You should also go to the avisynth usage forum instead of this one, because it is more relevent to interlacing.

DarkestGenesis
3rd November 2005, 02:22
Those are interlacing artifacts, A lot of material on dvd's is encoded interlaced. interlacing is when each frame of a video sequence is made up of two different fields, sometimes the fields are not of the exact same time, so half of your picture is a little ahead or behind of the other half. If the picture is perfectly still it will look fine, but the more motion there is the more obvious the time differential between the fields will be. You should look for a guide on interlaced content particularly on interlaced cartoons. You should also go to the avisynth usage forum instead of this one, because it is more relevent to interlacing.

So you are sure my problem has to do with interlacing? If I were to use a different filter in VDub would it perhaps fix this issue?

Didée
3rd November 2005, 02:36
So you are sure my problem has to do with interlacing? If I were to use a different filter in VDub would it perhaps fix this issue?
Once upon a time, we all started with

VirtualDub -> Video -> Filters -> add -> deinterlacing -> blend fields together (best)

looked at what we had done, and saw that it was good.


It was after the seventh day, when it started to look awful ...

*.mp4 guy
3rd November 2005, 02:40
None of the filters in Virtualdub are good enough at deinterlacing, you need to use AviSynth, or you could encode it in terlaced and deinterlace while you play the video (with ffdshow). If you wan't a more comprehensive answer find a guide, search etc.

[Edit]

Didee beat me to it.