Vertical lines, jaggies, shimmering, very odd

[agent2099]

I have noticed that recently some of my divxs have looked a bit odd. For example I just completed Scooby Doo and Spiderman.

In most scenes you can notice vertical lines throughout the entire picture, and sometimes there are jaggies in the actual picture, where the lines should be straight. For example if you look at the top of someone's collar, it will be "staired" instead of smooth.

These flaws are only apparent on T.V., not on my monitor. However most of my encodes look just fine on the T.V.

I am pretty sure it has something to do with the source material, as I use the same settings for all movies. I generally follow the guide word for word:

Here is a screen cap of my settings with the spiderman .d2v loaded into Gknot:

(58k)

http://www.theforumisdown.com/uploadfiles/1102/gknot.jpg

Any ideas what is causing this? Do I need to fast or field deinterlace?

[hakko504]

This is the same problem that is described in this thread. (http://forum.doom9.org/showthread.php?s=&threadid=37494)
Same answer: try telecide(post=false)

[agent2099]

I am not dealing with any PAL films; both of these are NTSC. And both show up ~99% FILM progressive in DVD2AVI.

However, I'm willing to try what you have suggested.


Where do I set "telecide(post=false)"?

[hakko504]

OK, you didn't say that it was NTSC, therefor my answer. It that case you just don't FORCE FILM in DVD2AVI and instead select IVTC on the encoding tab of GKNOT, before clicking on 'save&encode'

[agent2099]

Just to clairfy. These are NTSC films in that they are Region 1 films, however, DVD2AVI does not report them as NTSC, as it would, say, a 4:3 T.V. show. Here are the DVD2AVI results without selecting a filed operation:

(20k)

http://www.theforumisdown.com/uploadfiles/1102/dvd2avi.jpg

[agent2099]

Does anyone have any other suggestions? I tried the ITVC and the moive looks exactly the same. There are still jaggies when I view it on my television. Note, it isn't terrible looking, but it is noticeable. I guess I will try not resizing to see if that works.

[agent2099]

Ok I just finshed encoding this movie 3 times, 3 different ways. The same result each time, jaggies when watching it on t.v.

Has anyone else had this problem?

[manono]

Hi agent2099-

You say it looks fine on a monitor, but not on the TV. So, I wouldn't suspect the encoding, but either the vid card or the resizing done on the way to the TV. First I'd make sure I had up to date drivers for the vid card (some sort of NVidea card I bet-I hope it's not a GeForce2). Then I'd fool with the desk top resolution. For example, in BS Player, you can Right Click the movie, and then Change Resolution. Maybe try 640x480.

[agent2099]

Thanks manono. I have considered some of your suggestions. I don't think it's the drivers b/c some movies look just fine, while others are a bit jaggy. I did play with the software's resolution but that didn't really have an effect. The shape of the movie changed but the jaggies were still there.

In an attempt that someone may be able to help by getting a better idea of what I am dealing with I took some pics of each.


Monitor (56k friendly):

http://www.theforumisdown.com/uploadfiles/1102/monitor.jpg

TV (56k friendly):

http://www.theforumisdown.com/uploadfiles/1102/tv.jpg

As you can see by looking at the collar, it is smooth on the monitor, but stepped on the television.

[agent2099]

For comparison, here is a shot of the tv with the dvd as the source, instead of the divx as a source. While not silky smooth like the monitor, it its a lot less jaggy than the divx, and the little bit of stepping you do see, is not apparent at all in motiion. This leads me to believe that the jaggies are caused by something in the gknot process, espcecially since other divxs I have don't have the jaggies.

http://www.theforumisdown.com/uploadfiles/1102/dvd.jpg

[OvERaCiD23]

Being as the video appears to be correctly encoded on the monitor and not so on the TV, i'd suspect your TV settings may need to be altered. Possibly try lowering the sharpness level (can make the picture appear awkward). From looking at your screenshot, your monitor is LCD? I'd trust my eye to that over a TV (probably even a CRT monitor as well). I don't know what else to say, I've encoded Spiderman (R1) and have had no such problems on a monitor or TV. I'd check out TV settings and your video cables. No reason to spend more time reencoding for no reason.

[agent2099]

Originally posted by OvERaCiD23
Being as the video appears to be correctly encoded on the monitor and not so on the TV, i'd suspect your TV settings may need to be altered. Possibly try lowering the sharpness level (can make the picture appear awkward). From looking at your screenshot, your monitor is LCD? I'd trust my eye to that over a TV (probably even a CRT monitor as well). I don't know what else to say, I've encoded Spiderman (R1) and have had no such problems on a monitor or TV. I'd check out TV settings and your video cables. No reason to spend more time reencoding for no reason.

The monitor is a CRT. I have the sharpness set to zero :D. But that is an excellent point you have about the sharpness, as when I first got the T.V. I thought it was crap because all DVDs and Divxs on my T.V. looked terrible. Turns out the sharpness was at 70% or something under the default settings. :eek:

But I will try to calibrate the T.V. again and see if there are any settings I can tweak. Thanks.

[manono]

Good call OvERaCiD23. I didn't even think to question the TV settings. I hope that's it, agent2099.

[hakko504]

...and I wasn't even close...:stupid:

[jggimi]

One thing to check: It might be your video cable(s) for your TV-out. Either signal loss via excessive length, or poor connection quality, or poor insulation.

When I first bought my standalone DVD player some years ago, I'd spent extra money for componet video outs.

Unfortunately, I thought I'd wasted my money, as the video through the component connections looked worse than S-video, even worse than composite video.

Once I replaced my old, cheap, rca cables with a quality set of "monster" brand cables, the video looked terrific.

If your cable(s) are too long, that might also be a reason for poor video signal quality.