Blu-ray Weird Interlaced Problem

[daamxlaws]

Hello everyone,
I'd would like to know what is the best way is to deinterlace this video. I use avisynth and megui. when analyzed with megui the weird interlaced problem still cannot solve. yadif also wouldn't work. how to get rid the problem? what suitable filter should I use?

here the example
http://www.mediafire.com/?qc2bvmdtw739mka

[FulciLives]

Sample images aren't going to help, especially when they have been resized.

You might want to post a sample of the video. It doesn't need to be long. 10 seconds is good enough.

[jman98]

Like most new users you seem to think that the less you say the better but actually if you really and truly want help, provide more details about the source and what exactly you are trying to accomplish. If you really have interlaced footage to deal with I do want to put out that resizing it can be tricky and often leads to less than optimal results, should resizing be part of your goal.

[manono]

I'd would like to know what is the best way is to deinterlace this video.

It looks to me like it's already been deinterlaced - poorly. As FulciLives suggested, we'd like to see a short sample.

[Selur]

assuming video is from http://vimeo.com/26899204 or a similar source, some AA (i.e. using a based EEDI2) might help,...

[daamxlaws]

here the video. im not edit anything yet.
http://www.mediafire.com/?qc2bvmdtw739mka

assuming video is from http://vimeo.com/26899204 or a similar source, some AA (i.e. using a based EEDI2) might help,...

can give example for the script?

[Selur]

Here are some AA examples: http://pastebin.com/Y42s9hRZ
Problem is, that the source seems to be interlaced 1080i AVC content, which most avisynth input filters can't handle properly,..

[jagabo]

That video is 1080i but it was made from a poorly deinterlaced (simple bob) standard definition video. It's also gone through a frame rate conversion with field blending. And then there's the crushed lights and darks. What a mess.

[daamxlaws]

So, this video can't be fixed? or very difficult to fix.

[jagabo]

It will require more patience than I have. And the damage is probably far too extensive to get a very good result.

[poisondeathray]

You won't be able to "fix" it , but you can improve it a bit


There are many things to address, but regarding the aliasing you can use qtgmc in progressive mode (inputtype=1 or 2) to improve it . Coarse aliasing, like the closeup later of guitar strings won't be improved much, or the filters required will be too damaging to be worth it. Finer aliasing like small cords, window edges, should be improved

This is a sd upscale, so some filters like AA filters won't work well until you downscale back to SD .

The blends are very bad, I don't know how to improve them. Maybe someone else does . I used srestore in this example after qtgmc (normal bobbing), but there are still many blends. Maybe try some exotic deblend functions like restorefps

You can adjust the levels (elevated black level) and other problems as you see fit

You might have to apply different AA filters to different sections and experiment with some filters . Like jagabo said it' s a mess. This would be a lot of work to fix it up properly, and you still wouldn't get good results. The source is just that bad. You will need manual masking/ rotowork as to not damage other sections

[manono]

I played with it for about an hour before the two of you left your impressions, discovered the same things as the two of you did, and then threw my hands up in disgust. It doesn't IVTC properly, doesn't unblend properly, and some of the aliasing is horrific. After that I just said 'screw it'.

[Selur]

regarding the blends, it might be possible to get better results by using sRestore,.. needs probably a lot of try&error
All in all I wouldn't make an effort to fix this,... unless I had really too much time on my hand a nagging desire to learn avisynth,....

[aedipuss]

anyone take a look at it interlaced?

i see at least 3 frames blended in the original. might have been mbaff or paff that was badly handled. too late now to fix.

[daamxlaws]

You won't be able to "fix" it , but you can improve it a bit


There are many things to address, but regarding the aliasing you can use qtgmc in progressive mode (inputtype=1 or 2) to improve it . Coarse aliasing, like the closeup later of guitar strings won't be improved much, or the filters required will be too damaging to be worth it. Finer aliasing like small cords, window edges, should be improved

This is a sd upscale, so some filters like AA filters won't work well until you downscale back to SD .

The blends are very bad, I don't know how to improve them. Maybe someone else does . I used srestore in this example after qtgmc (normal bobbing), but there are still many blends. Maybe try some exotic deblend functions like restorefps

You can adjust the levels (elevated black level) and other problems as you see fit

You might have to apply different AA filters to different sections and experiment with some filters . Like jagabo said it' s a mess. This would be a lot of work to fix it up properly, and you still wouldn't get good results. The source is just that bad. You will need manual masking/ rotowork as to not damage other sections


[Attachment 13853 - Click to enlarge]

wow this look better than before. what filter you use? share the script

[poisondeathray]

wow this look better than before. what filter you use? share the script

Only on that section. Other parts are not improved much (like the guitar strings). And there are still lots of blends and other problems like levels you have to fix

AssumeTFF()
QTGMC(Preset="faster")
BicubicResize(848,480)
SRestore(29.97)
AssumeFPS(30000,1001)
QTGMC(InputType=1)


You might get better in those other sections results stacking other AA filters

The blends are a real problem, because the temporal filters actually may make the picture worse in some sections (temporoal filters derive information from adjacent frames, if those frames are not fixed before, it "spreads" the blending)