[MEncoder-users] Removing strange noise around edges

[Phil Oleynik]

Fredrik Eriksson wrote:

> Hello. I've found some ugly noise that I want to remove. Take a look 
> at the sample image: http://winterbird.no-ip.org/sample.png As you can 
> see there is some strange noise around the edges on his red cloths. 
> This noise changes pattern all the time and is very irritating. But 
> the only way I've found to remove it is to overuse the unsharpening 
> and/or denoising filters, resulting in extensive detail loss, and I 
> don't want that...
>
> Does anyone know a way to remove this ugly noise without destroying 
> the rest of the video? A short sample (copied from the dvd to a mpg 
> file) can be found here: http://winterbird.no-ip.org/sample.mpg

Hej

I have looked at the picture, and it seems that video was incorrectly 
deinterlaced,
this happens when someone think that anime is interlaced, when its 
indeed telecined.
So these artefacts are from wrong field sampling, plus, normal MPEG/JPEG 
artefacts
due to image compression. The problem reveals itself only on 
high-saturated areas,
so I think its better to pass the video through normal denoiser, and see 
if it will be
watchable. If not, the only way is to rip again from DVD or get another 
rip if DVD is
out of reach.

Philipp