Removing MPEG2 dust and blocking

[MrTroy]

I recorded this from satellite tv. Unfortunately the broadcasters used some bad encoding, because the video is very dusty and blocky.

It's apparent in these screenshots
Screen 1 (http://img151.imageshack.us/img151/3162/hhshot15ol.png)
Screen 2 (http://img127.imageshack.us/img127/6654/hhshot27ts.png) (dust on mountain, blocky clouds)

Sample (http://www.megaupload.com/?d=VDKF93OC) (15.62 MB, m2v 720x576)

How to remove these artifacts? I tried many of the 'popular' denoisers like TemporalCleaner and Conv3D, but they only create bigger blocks of noise instead of removing or smoothing it. And of course they aren't suitable for removing blocks.

[foxyshadis]

We've had a couple of very recent threads in here on deblocking.
http://forum.doom9.org/showthread.php?p=825609
For deringing, that's where smoothing filters come in. frfun7 is a great deringer, as are tbilateral, degrainmedian, deen, in different circumstances.

And, er, try an actual image host instead of an upload host (like photobucket or imageshack); I can't get to the pics to see how bad it is.

[MrTroy]

Thanks for your answer, I will look into it.

As for the actual image hosts: sorry if it caused some inconvenience, myself I have no trouble at all reaching the image. Do you use an alternative web browser? I tried opening the page in Opera, and indeed it doesn't function in that one.

[foxyshadis]

No, just says my ip is banned for awhile. Hrm.

[MrTroy]

OK, I replaced the links.

[foxyshadis]

Er, those are full 24-bit pngs, right? Not saved as 8-bit in some application? That seriously looks like a bad case of MS Video 1 there. (Haven't been able to get the video yet, hopefully it'll work tomorrow.)

[MrTroy]

Er, those are full 24-bit pngs, right? Not saved as 8-bit in some application?:eek: You might not have known it, but that was a seriously good suggestion. The PNG's were 24bits yes, but it turned out my MPEG2 decompressor was messed up: it outputted 16bits colour :o Sorry. When viewed in full 24bits, the MPEG2 contains very little blocking, in fact, nothing directly visible.

This doesn't solve the noise, however. I'm going to try some of the deringers you suggested now.

[MrTroy]

Thanks, degrainmedian pretty much did the job. FRFun is slightly better, but it's too slow for my computer. :)

TBilateral and Deen do not give satisfactory results on this source.