Downgrade video

Is there any good simple methods to degrade video quality/resolution? For example, I have anamorphic DVD footage of an old warner bros logo I want to restore to an Laserdisc transfer without any noticable change in quality between the two sources, any suggestions on how I'm going to do that in the best way? Thanks.

Hmm.

You could go simple, like just resizing to a lower resolution then upscaling it.

You could use avisynth's Blur() (which is gaussian and the reverse of avisynth's Sharpen().)

You could also use fft3dfilter, but that's pretty CPU intensive just to mutilate an image.

Once you've softened things, you may want to use something like addgrain() to dirty it up.

I can't think of anything else you'd really want to do.  I can't see you wanting interlace artifacts or image jitter, but I suppose you could.

Thank you, Doctor M!

I'll try out some of those.

I agree with Dr M - the simplest AviSynth method would be to down-res, then resize back up to the desired resolution, then use an effects filter to add noise/grain.

Or, you could record the DVD on to VHS (probably have to defeat Macrovision in the process) and then recapture. Although it's probably not worth the additional work involved to get the authentic analogue video effect.

Thanks for the suggestions!

Moth3r said:

I agree with Dr M - the simplest AviSynth method would be to down-res, then resize back up to the desired resolution, then use an effects filter to add noise/grain.

 

Ok, I want to try this out, could you guys give me an script example of this method please, (my Avisynth knowledge is really bad) thanks.

Quite depressing when you discover that a whole year have passed since I first started to work with this... anyway, are there any avisynth filters that is able to simulate telecine wobble/gate weave?