areas of picture shakes, jumps (not the whole frames!) - help needed

[zee944]

Hello Everyone,

I've a problem with a video. Areas of the picture jumps, shakes a little. Not whole frames are shaking, always just parts of each frame, and occasionally. It's especially annoying when you see it on a human face. I have no idea what filter should be used to correct that.

Not sure I was clear, so I uploaded a short sample here: http://www.badongo.com/file/2843655 (MPEG2, 6 Mbytes)
The sample has three takes. In the first take, the clouds on the upper right are shaking; in the second, the background at the middle of the picture is shaking; in the third take (which is a close-up) the guy's face are shaking. The remaining areas of the picture are perfectly stable.

If anybody could have a look at it, and could suggest something, I'd appreciate it. I would like to know if it is possible/worth to do something at all against it or not. So please comment, even if you think there's no way I can fix it. I want to know.

Thank you for any help in advance.

[Soopafresh]

There are several problems with the movie. It has a bad NTSC-PAL transfer. That fluctuating "hot spot" is going to take a lot of work to fix. Unless this is your favorite movie of all time, skip it.

[zee944]

There are several problems with the movie. It has a bad NTSC-PAL transfer. That fluctuating "hot spot" is going to take a lot of work to fix. Unless this is your favorite movie of all time, skip it.

Thanks for the respone!
Well, it's one of my favorites of all time, and the best copy worldwide.
What's wrong with the PAL-NTSC transfer? What do you see? I have to admit, I did the transfer, but I can't see what's wrong with it.

[Soopafresh]

You did the transfer ? Oh...well, it's fine then The only reason I complained is because sometimes the conversion can create blended fields, which don't look so good. If you can keep it at NTSC (if your DVD player supports it), the image will have less artifacts. But that's up to you.

That flicker in the middle of the video is the real problem. You can create a "mask" and overlay the source video with the inverted mask to try to get rid of the hot spot, but this is going to take a long time. I wish I could be more optimistic about it. You can get improvement, but not a 100% solution.

Good luck, let me know if you find a way to fix it.

[SCDVD]

NTSC to PAL or vice versa is a dammed if you do and dammed if you don't proposition. The brute force approach of adding or deleting one out of six frames tends to result in annoying jerkiness that I find particularly annoying on pans although it is apparent in other motion as well. The "smoother" approach of blending fields can reduce the apparent jerkiness but introduces problems of its own. Many agree that the best approach is a dual mode player. I don't know if this is the cause of your particular problem with this video but it's a more general observation.

[zee944]

You can create a "mask" and overlay the source video with the inverted mask to try to get rid of the hot spot, but this is going to take a long time. I wish I could be more optimistic about it. You can get improvement, but not a 100% solution.

Thank you for the explanation & suggestion. The masking thing is not a way for me since half of the movie has this damage. Anyway, thanks for having a look at my problem, you've strongened my instinctive feeling.

NTSC to PAL or vice versa is a dammed if you do and dammed if you don't proposition.

I'm pretty sure it's a proper conversion. No deleted frames. It's a film material, inverse telecined with Decomb() back to progressive 23.976 then speeded up to PAL 25fps. The flickering/shaking parts are not related to this. Let's skip the conversion issue, it's a whole different matter.

I'd still welcome any opinion on the problem. If anyone has, please share it even if it just confirmation on 'no way, mate'

[grannyGeek]

Hi, I can't check your clip (corporate firewall blocks me from accessing P2P sites), but from your description, I wonder if it is like the one I reported a while back.
If so, there doesn't seem to be a cure, because it is apparently caused by de-noising during the original video creation, and can be made worse by your own attempts to de-noise.

Take a look at the link I posted in this thread and see if the example on that site looks like your problem.

I'm still hoping to find a fix, too.

[zee944]

Hi, I can't check your clip (corporate firewall blocks me from accessing P2P sites), but from your description, I wonder if it is like the one I reported a while back.

Thank you for the notice. I've already seen your topic when I was searching for solution for my problem. The symptoms are similar indeed. But I the root cause if different, my source is damaged film. I think I have to give up fixing this.