Moving dots I cant seem to get rid of

[darkdream787]

Ive seen and fixed plenty of dot crawl in sources but this really takes the cake at being a pain in the ass.

Perhaps its not dot crawl or something Ive not yet come across?

These lines during playback seem to have plenty of moving dots running along the lines. It looks pretty much like dot crawl to me but seems a little different.

I used the dot crawl filter checkmate() and an antialiaser and they still wont go away. They seem to be around a bit less after though.

Its several times more noticeable in the DVD video source. Theres an unaltered video sample in the next post below.

any suggestion? Here are a few screenshots of the source after I have filtered it with checkmate() and an antialiaser. (Unaltered video screenshots can be found below)

http://img59.imageshack.us/img59/4408/dot1.png

http://img11.imageshack.us/img11/6936/dot2p.png

http://img839.imageshack.us/img839/1805/dot3.png

http://img14.imageshack.us/img14/4271/dot4.png

[darkdream787]

Heres an unaltered video sample incase anyone needs it.


They show up alot once it gets to around the point you see the guy wearing the red jacket. They show up like that in various places all through the entire video and DVD.

http://glumbouploads.com/jq5qwkb0oplb.html


A longer 1 minute and 30 second sample can be found here

http://glumbouploads.com/0qoh16vn3j9p.html


heres a couple screenshots too of the video unaltered

http://img528.imageshack.us/img528/2756/vts011vobsnapshot021520.png

http://img803.imageshack.us/img803/2756/vts011vobsnapshot021520.png

http://img17.imageshack.us/img17/3065/vts011vobsnapshot062020.png

[jagabo]

Those are left over dot crawl artifacts from a poor dot crawl filter. They are very hard to get rid of without destroying the rest of the picture.

Scot Elliott's DotCrawl Comb Filter for VirtualDub does a pretty good job of removing them from your video. But it also leaves some other artifacts.

[darkdream787]

If it helps any, I can say this much about it as well.

It shows up on the TV when being played by the DVD player as well. My filtered version looks so much better but the dots are still there as you can see in my first post at the top.

[jagabo]

It shows up on the TV when being played by the DVD player as well.

Yes, they are "burned into" the picture by the original analog to digital transfer.

[darkdream787]

It shows up on the TV when being played by the DVD player as well.

Yes, they are "burned into" the picture by the original analog to digital transfer.

someone managed to suggest a script to get rid of them and it did the job but the cost was that it blurred the image terribly and thinned all black lines making the output so terrible looking it wasnt worth it.

I guess theres ways to do it but it wont be easy to not lose too much details as I believe you said.

[darkdream787]

Actually, I finally got it quite well and I didnt even have to ruin much if anything that I can see. I dont notice anything going bad about it really.


TOP = My original encode that I posted shots of with dots
BOTTOM = The one I just did last night that I was going to see how it turned out


Ok in this first example, 99% of the dots are gone and I didnt really notice anything ruined about it. The new one even looks a bit sharper I think. If you look around the eyes, it looks like the new one might have darkened/thickened black lines in some areas of the video a tiny bit but no one will really notice during playback unless they had the original footage to compare to it. I could barely tell in the screenshots.






Thats much better than the original footage as you can see






In this next example again 99% of the dots are gone and I dont really see anything gone bad yet. Again I think I see black lines barely getting thicker/darker in some spots but without footage to compare and being picky I dont really think it means too much or is a bad thing. The only real change I notice between the two besides the dots gone is the bottom left corner of that opened door when I flip back and forth between the two quickly.

[jagabo]

So what filters did you use?

[darkdream787]

So what filters did you use?

I added in

checkmate(tthr2=0) ------- [[[did (tthr2=0) so artifacts wouldnt show up during rapid movement]]]

QTGMC(preset="Slow", InputType=1) ------- [[[This is what I added in last night that took away the rest of the dots with ease]]]

and I added an antialiaser of my choice, a denoiser of my choice, and a sharpener of my choice at the end to get rid of the rest of the dots and to sharpen the image. The antialiaser and QTGMC are what got rid of them completely. In my first encode I only had the antialiaser and checkmate without QTGMC. They reduced them but didnt fully get rid of them alone.

[jagabo]

Ah, I was playing around with Checkmate() after my last post and was about to suggest it. Good work.

[darkdream787]

Ah, I was playing around with Checkmate() after my last post and was about to suggest it. Good work.

Thanks, checkmate is what I been using all along but it alone wasnt enough. Its not often that checkmate alone doesnt do the job for me when it comes to dot crawl. Thats why I had to ask what was up with this incase it wasnt dot crawl because checkmate alone usually fixed all dot crawl I came across before and the crawl that was in this source was pretty heavy compared to what I usually see.

[unclescoob]

I'm noticing alot of Virtualdub suggestions as solutions to video problems in this forum lately. I find it hilariously ironic how, when I started posting here and mentioned that I used V-dub, it was Avisynth shoved up my nostrils and "Virtualdub filters are inferior, blah blah blah".

Now that I've gotten hooked on the crack that you all eventually managed to sell me, and rarely ever use Virtualdub anymore (except MAYBE for color correction), Virtualdub is slowly gaining popularity again in these forums. Funny how tables slowly turn...even if only halfway.

[2Bdecided]

Many people use both.

I almost always use VirtualDUB to preview my .avs scripts. I occasionally use VirtualDUB filters too, though I make far more use of AVIsynth filters. I never use VirtualDUB filters in AVIsynth because the ones I find useful are too clunky to use in this way - but it can be done.

I sometimes use VirtualDUB for quick lossless cut editing of those filetypes which it supports.

Use the right tool(s) for the job

Cheers,
David.