the PERFECT 3/2,2/2 24/30fps deinterlacer using Avisynth filters  

Great timing Li On, I've been pulling my hair out trying to figure out why it seems nobody is able to match, in software, what nVidia does in hardware. I'll have to try this out, and I may actually be able to start using ffdshow.

Whoa, this works in real time? Do you think it will work on an Athlon XP 3500+?

Oh hell, I will try it anyways. :D

Thanks Li On.

I'm not sure how to install these DLLs.

Do I put the DLLs into my C:\\Program Files\\ffdshow directory? Or should they go in the C:\\Program Files\\AviSynth 2.5\\Plugins directory?

The reason I ask is that I cannot tell if the AVISynth script is actually working properly. I cannot see any difference. Am I supposed to have more than the 2 lines in the AviSynth script window of the FFDShow configuration? Like a Load command or something like that?

Thanks.


I am using the NVIDA decoder in TheaterTek 2.2.1, with FFDShow post processing turned on.

EDIT: I am a complete newbie when it comes to AVISynth scripts in FFDShow. Please be gentle. :)

Thanks Li On.

It seems that my version of FFDShow doesn't work properly (20050303-SSE). Nothing happens when I have the "version" script running.

It would explain the combing I got on a lot of scenes when I was testing with Last Exile.

I'll have to try a different version of FFDShow...

Somehow I got it working with FFDShow 20050303SSE - not sure why - probably because I had installed AVISynth 2.50 separately.

Anyways, it works somewhat okay, I guess. I tried Crest of the Stars disc 4, and the combing is gone, but it jerks and stutters on almost every pan. Damn - guess it doesn't work that great on such challenging material.

Combing is still somewhat present even on a Faroudja player - although 90% gone - the Faroudja player would blend them most of the time instead.

So, this plugin solution isn't as good - but it might be that my PC is underpowered, or I have to find the magic combination of FFDShow and AVISynth.

I am using TheaterTek 2.2.1 which uses the NVIDIA decoders...maybe it gets in the way?

I'll have to give this one a shot, your rig being P4 and mine being A64 might make a diff in CPU utilisation, but then I am not using limited sharpen and only Lanczos2... might just scrape in if I ease off the resize somewhat ehhee... will report back.

Anyone have a list of titles that would be good to test against? Apart from anime cos thats always tricky... wouldn't want to write it off due to anime, especially since I don't care too much for anime on the big screen, its perfectly fine on my 17"er. Especially since at the distance I watch and my eyes being stigmatised, it's easier to read the subs on the small monitor.

Cheers...
Duy-Khang Hoang

Futurama first season boxset has combing from hell! Give that a shot. Some of the worst combing I've seen. My projector's builtin Sil504 deinterlacer works really well on it.

I am in the middle of something on my PC so I can't test Futurama tonight.

I am, it just doesn't work well for that, I get "corrupted pixels" for lack of a better term. And I refuse to have to change settings on a per-title basis.

I found another very problematic DVD - the region 1 Ghost in the Shell: Stand Alone Complex 2nd Gig Volume 2 disc!

This disc cannot be properly deinterlaced by NVIDIA's PureVideo. Even the script in Li On's first post can't handle it. However, UnComb() can catch the worst combing artifacts (for example, at 15:35 in the first episode, when Aramaki stands up - combing from hell! Also combs during the Prime Minister's reaction when she looks in the box). Unfortunately, the opening credits comb like crazy - I think because it is interlaced 30 fps.

However, using this seems to work:

UnComb()
LeakKernelBob(1,8,false)
BlendBob()

With the script in the 1st post, the credit text looks good, but with some pixellation when it stops motion (it does this on my Faroudja-based DVD player too though). With only UnComb(), everything combs in the opening credits. But when I combine the scripts as above, the credits text is still screwed up a bit, but at least the backgrounds don't comb. It still isn't perfect during the credits, but works well with the rest of the video (probably due to Uncomb).

Unfortunately, the script above results in choppy playback in some cases - my PC isn't powerful enough! But, it does a better job than Purevideo and is close to my Faroudja player!

There are a lot of bad edits in GitS: SAC 2nd Gig Vol. 2. Bandai should be ashamed of themselves - I've never seen combing this bad since Volume 1 of the first season!

I also tried the TIVTC plugin I found on Doom9's forums. Wow - it does a superb job. Unfortunately, it isn't suitable for realtime - huge numbers of dropped frames, but it does look produce beautiful output.

You know, I wonder if using TIVTC and reencoding would be better for me...I would love to re-encode and reauthor the GitS: SAC Vol. 2 disc. Would this be possible? It just bothers me that Bandai could not author the disc properly in the first place.

I did try the TomsMoComp filter found in the Deinterlacing tab (I'm using ffdshow-20051124-gcc4.0.2-sse-x264.nl.exe), and it didn't comb - but the resolution looked like it was chopped in half - blocky!

I'll have to search for that DScaler MoComp2 plugin - I didn't see it as an option in FFDShow's DScaler tab.

You are right about the DCDi artifacts - in the opening credits of that GitS episode, there was no combing, but the text edges were blocky and shimmered and flickered. Better than Purevideo though - which got rid of most of the combing but the text itself combed quite a lot.

I'm finding that UnComb() isn't too bad while watching the actual show - the occasional combing but less distracting than Purevideo's in some scenes.

Another crazy disc for combing is the Crest of the Stars anime series - not even my Faroudja player could stop the combing! Probably really bad field-blending mastered right onto the disc like you mentioned.

Hmmm, I can't seem to select MoComp2 in FFDShow, after installing DScaler 4.1.11. It doesn't show up in the Dscaler Filters tab of FFDShow! I only see the filter DLLs that begin with FLT_*, not the DI_* ones. Any ideas?

Nevermind - I figured it out. I had to reinstall FFDShow and tell it where DScaler is before it finds the DScaler deinterlacers!

Damn, using Deinterlacing->DScaler->mocomp2 results in a horrible slideshow. I get 1 frame every 20 seconds or so. Yikes!

Yep, I am sure! However, this may be an FFDShow problem - it seems every FFDShow made in 2005 cannot support DScaler Deinterlacing plugins properly - they are unusably slow. If I try FFDShow 20040709 (Andy's non-SSE version) there is no slowdown - but then deinterlacing doesn't seem to work at all, no matter which one I try! Combing and strange tearing-like effects.

Very strange. It's driving me nuts, because I hate the blocky and jaggyness of the standard TomsMoComp deinterlacing built into FFDShow.

I can't seem to find a non-SSE2 version of Andy's August Preview. I will keep searching.

By the way, the slowness is actually more like a dozen frames per second...still too slow! It just pauses for a long time after processing several frames - probably because the audio decoder is trying to resynch.

I tried Celtic Druid's FFDShow 20050803 version (marked as Recommended on the mirror websites). I found it here:

http://ffdshow.faireal.net/

This time, I can actually run the DScaler4 deinterlacers without slowdowns. However, resolution is cut in half vertically - very block and obviously all the combing artifacts are gone regardless of deinterlacer plugin I chose! Not a good solution. I don't understand this!

So I'm giving up on using DScaler's Mocomp2 for now.

In the meantime, it seems using a combination of NVIDIA's NVPP with an AVISynth script that simply calls UnComb() seems to eliminate all combing artifacts yet preserving the 24 and 30 fps playback rates, although the scrolling text and some of the visuals in the opening credits still have artifacts (mostly because NVPP can't handle it). But the combing I saw in the opening credits are gone thanks to Uncomb().

So, it's a good compromise! Panning in smooth, and in action scenes and bad flagged areas of the 1st episode the combing is gone. So for this very specific case it achieves performance similar to the Faroudja.

Thanks Li On for giving me all these crazy ideas. :)

For the longterm, I'd love to see a tool that can go through a video, perform deinterlace, and create a script with deinterlacing, blending, and deblending instructions. Then this script can be executable by a video decoder to properly arrange the frames for realtime playback. I think in theory this will eliminate stutter or dropped frames if the processor isn't fast enough to run a sophisticated searching algorithm in realtime - just run a batch file for the video you'd like to watch a couple of hours before the show starts.

Wouldn't it be great if the DScaler5 mpeg2 decoder could read this script file and follow the instructions to blend/deinterlace the frames after all the hard work is done by the tool?

What version of FFDShow and DScaler is he using? One day I will get this working. :)

Thanks.

Hi,

This sollution is way to slow for HD Movies/Series.

The only good solutions are the modified DScaler Version with IVTC released some weeks ago here and my Version based on this (wich has no more audio sync problems/ 720p 60 Hz -> 24 Hz Conversion / Subtitles fixed in IVTC Mode/ Works with unusual 3:2 Paterns (e.g. sometimes on NBC)/ recognizes these damn dynamicly speed adjusted movies (not series) on ABC)/ absolutly correct timestamps so thats possible for reclock to play NTSC Material without any stutter).

I plan to integrate a display rate check to optimize the IVTC for multibles of 23.976 Hz and other refreshrates...

cya

Ralf