Problems loading plugins into AVISynth

[bvdd]

I'm close now, just need to solve the 'slow and jerky' result.

QTGCM() and SRestore() are very slow filters. Your computer just isn't fast enough to run them in realtime. Encode the video and check the resulting file.

The resulting file is exactly the same .. very slow and jerky. I think something else is going on.

[bvdd]

I tried removing the 'QTGMC' line in the script and it's responding normally again. By 'normally' I mean the speed appears to
be whatever I set the 'AssumeFPS' setting to be.

If I'm understanding all this so far, the only issue now is duplicate frames which is why it's still looks jerky.

So maybe the 'QTGMC' line is not right - although it worked fine for manono.

[bvdd]

Or maybe the 'ConvertToYV12(interlaced=true)' line is the culprit?


Thanks again guys for your patience.

[_Al_]

Can you post mediainfo report what your clip exactly is? Or better, rather than that info, can you post a couple of second sample of your avi video , you can cut it off in VirtualDub, without re compression. I think time has come to it. It usually helps a lot.

[LigH.de]

QTGMC v3.33 got a few changes after v3.32 to support YUY2 video; but there are many more or less "current" sources reported in different locations (e.g. doom9 forum, AviSynth Wiki, ...); converting to YV12 as mentioned above may be more reliable.

[jagabo]

Upload your encoded video. Or at least check it with MediaInfo.

As a quick test, try replacing QTGMC() with Bob().

And <20 fps video is inherently jerky. It looks to me like the correct frame rate is around 12 fps.

[bvdd]

Here is the link to my first post which started this whole thing. Not quite halfway down the page you find the original clip I posted, and
right below that a reply from manono who made it look great by using his script. I'm really just trying to recreate what he did, on my PC.

Below the link is manono's script.

https://forum.videohelp.com/threads/375313-Lowering-AVI-frame-rate-causes-jerky-movement

AVISource("SHORT TEST.avi")
QTGMC(Preset="faster")
Srestore(Frate=19.98)
AssumeFPS(17.982)
Crop(8,0,-8,0)
LanczosResize(640,480)

[bvdd]

I'll have to wait 'til I get home from work to post my 'very slow and jerky' clip.

[bvdd]

It's not letting me upload anything - it's stuck on "Sending request to forum.videohelp.com.

I'll keep trying.

[bvdd]

Ok, I think I got it.

Here's a shorter clip followed by the same clip processed.

And here's the script:

Import("C:\Program Files\Avisynth\plugins\sRestore.avs")
AVISource("SHORT TEST2.avi")
ConvertToYV12(interlaced=true)
QTGMC(Preset="faster")
AssumeFPS(17.982)
Crop(8,0,-8,0)
LanczosResize(640,480)

[jagabo]

You left out SRestore(frate=19.98).

[bvdd]

Ok, I put it back in but had to try it in different lines.

This script seemed to work the best speed wise, but it's still jerky and I think it's duplicate frames.

Import("C:\Program Files\Avisynth\plugins\sRestore.avs")
AVISource("SHORT TEST2.avi")
ConvertToYV12(interlaced=true)
Srestore(Frate=19.98)
QTGMC(Preset="faster")
AssumeFPS(17.982)
Crop(8,0,-8,0)
LanczosResize(640,480)

[poisondeathray]

QTGMC has to come before SRestore() . It's mandatory.

QTGMC bob deinterlaces your video to 59.94p. Srestore selectively throws out the duplicates using detection and logic

[jagabo]

QTGMC converts each field of the interlaced source (30i) video into a progressive frame (60p). SRestore then removes blended and duplicate frames. When it's done you should have all unique frames with no missing frames and 19.98 fps. As with most such complex operations it's not always perfect but it works pretty well with your source. AssumeFPS() then sets the frame rate for the remaining frames to 17.982 (I think it should be about 12) instead of 19.98. No frames are added or removed, just the rate at which they are to be displayed (the run time increases proportionally). Cropping removes the 8 extra columns at the left and right edges of the rec.601 DV cap. And the resize converts to square pixel 4:3 display aspect ratio.

[bvdd]

QTGMC has to come before SRestore() . It's mandatory.

QTGMC bob deinterlaces your video to 59.94p. Srestore selectively throws out the duplicates using detection and logic

Thanks!

[bvdd]

QTGMC converts each field of the interlaced source (30i) video into a progressive frame (60p). SRestore then removes blended and duplicate frames. When it's done you should have all unique frames with no missing frames and 19.98 fps. As with most such complex operations it's not always perfect but it works pretty well with your source. AssumeFPS() then sets the frame rate for the remaining frames to 17.982 (I think it should be about 12) instead of 19.98. No frames are added or removed, just the rate at which they are to be displayed (the run time increases proportionally). Cropping removes the 8 extra columns at the left and right edges of the rec.601 DV cap. And the resize converts to square pixel 4:3 display aspect ratio.

Excellent explanation, that's just what I need.

Now I'm going to try again ... fingers crossed.

[bvdd]

Ok, here it is with FPS set to 12. The speed seems right but it's still a little jerky.

Import("C:\Program Files\Avisynth\plugins\sRestore.avs")
AVISource("SHORT TEST2.avi")
ConvertToYV12(interlaced=true)
QTGMC(Preset="faster")
Srestore(Frate=19.98)
AssumeFPS(12)
Crop(8,0,-8,0)
LanczosResize(640,480)

[jagabo]

I saw one duplicate frame at frame #70. And didn't notice any missing frames. Of course, 12 fps is jerky to start with and the camerawork is jerky too.

[bvdd]

Yeah, the camerawork is jerky for sure.

How do you find individual duplicate frames - or maybe you just have really sharp eyes?

Is there a way to tell sRestore to find it, or is it set & forget and whatever it finds you settle for?

[LMotlow]

How do you find individual duplicate frames - or maybe you just have really sharp eyes?

With some media players you can move frame by frame, but it's clumsy and a hassle to move back and forth. Open a video in Virtualdub. Then click the >> or << navigation arrows at the bottom of the window to move frame by frame.

Tip: An Avisynth script executes coded lines in the order in which they're listed. Avisynth executes the first line, then the next, then the next after that, and so on.

[jagabo]

How do you find individual duplicate frames - or maybe you just have really sharp eyes?

I first noticed it during realitme playback. Then I opened the video in VirtualDub and stepped through, frame by frame (right arrow key) to verify it and get the frame number.

Is there a way to tell sRestore to find it, or is it set & forget and whatever it finds you settle for?

The duplicate frame may mean that the projector was actually running a bit slower than 19.98 fps. Or the clip may be too short for SRestore to completely sync at 19.98 fps. In the former case you should specify a lower frame rate in SRestore. The latter may clear up simply by using a longer clip or starting at a different position.

[bvdd]

I've learned so much in a week and I can't thank you all enough for your help and patience.