[Problem on Image] Coverting 1080i to 720p

[bebetoalves]

Hello, I am trying to convert a bluray a series for episodes using MeGUI program and have a little knowledge about it, but I'm having problems with the generated image, I see something like a shadow or poorly done edges, and sometimes the video is kinda slow, follows the print to see:



I'm converting direct format (.m2ts 32GB) to mkv already with the cuts due in duration.

My script:

DirectShowSource("D:\STREAM\00003.m2ts", fps=29.970, audio=false, convertfps=true).AssumeFPS(30000,1001)
LoadPlugin("C:\Users\Administrator\Downloads\MeGUI_2624_x86 (1)\tools\avisynth_plugin\TIVTC.dll")
TDecimate(cycleR=1)
#crop
Spline36Resize(1280,720) # Spline36 (Neutral)
#denoise

I've tried to deinterlace the video with all available filters that know and the result is basically the same. I think this is a bluray dvd upscale a 480i.

I appreciate all the help possible.

[EDIT]
exemple.mkv

[LigH.de]

And again we have a Groundhog Day ... Your use of DirectShowSource probably messed up the video in a way that it might insert or remove single frames which would confuse a decimate filter. And who knows if there is any DirectShow filter in the filter chain which blends fields before you can work with them?

Many people with a lot of experience always recommend not to use DirectShowSource when you can avoid it. You should instead prefer L-SMASH Works (LwLibavVideoSource) or FFMS2 indexing (FFVideoSource) or one of Donald Graft's hardware decoder source filters (DGDecode...), using the "File Indexer" tool in MeGUI. They would certainly deliver the decoded frames as they are, in optimal quality, without any possibly surprising and unexpected post-processing.

I would not even be sure that you have telecined video in a HD resolution. Are you really sure that it has a 3:2 Pulldown pattern?

[jagabo]

It looks like upscaled standard definition video in those pictures. But there's no way of saying for sure since we don't know exactly how you prepared the images.

If you really have interlaced video you need to deinterlace before downscaling. And decimating doesn't make sense unless it's film based. If it's film based it should be field matched before decimating.

For true interlaced video:

DirectShowSource("D:\STREAM\00003.m2ts", fps=29.970, audio=false, convertfps=true).AssumeFPS(30000,1001)
Yadif(mode=1, order=1) # or order=0, whichever is appropriate
Spline36Resize(1280,720)

For telecined film:

DirectShowSource("D:\STREAM\00003.m2ts", fps=29.970, audio=false, convertfps=true).AssumeFPS(30000,1001)
TFM() # field match
TDecimate() # remove duplicate frames (1 in 5)
Spline36Resize(1280,720)

The result of the first script is 59.94 fps with the smooth motion of the original. The result of the second script is the 23.976 fps of the original film.

There are many other possibilities. You should post a sample of the original video (not reencoded).

And Spline36Resize() is not a neutral resizer. It sharpens and will exacerbate the oversharpening halos already in your video.

[bebetoalves]

It looks like upscaled standard definition video in those pictures. But there's no way of saying for sure since we don't know exactly how you prepared the images.

If you really have interlaced video you need to deinterlace before downscaling. And decimating doesn't make sense unless it's film based. If it's film based it should be field matched before decimating.

For true interlaced video:

DirectShowSource("D:\STREAM\00003.m2ts", fps=29.970, audio=false, convertfps=true).AssumeFPS(30000,1001)
Yadif(mode=1, order=1) # or order=0, whichever is appropriate
Spline36Resize(1280,720)

For telecined film:

DirectShowSource("D:\STREAM\00003.m2ts", fps=29.970, audio=false, convertfps=true).AssumeFPS(30000,1001)
TFM() # field match
TDecimate() # remove duplicate frames (1 in 5)
Spline36Resize(1280,720)

The result of the first script is 59.94 fps with the smooth motion of the original. The result of the second script is the 23.976 fps of the original film.

There are many other possibilities. You should post a sample of the original video (not reencoded).

And Spline36Resize() is not a neutral resizer. It sharpens and will exacerbate the oversharpening halos already in your video.

Yes, it's basically a blu-ray (official) that was upscaled a 480i dvd.

[bebetoalves]

And again we have a Groundhog Day ... Your use of DirectShowSource probably messed up the video in a way that it might insert or remove single frames which would confuse a decimate filter. And who knows if there is any DirectShow filter in the filter chain which blends fields before you can work with them?

Many people with a lot of experience always recommend not to use DirectShowSource when you can avoid it. You should instead prefer L-SMASH Works (LwLibavVideoSource) or FFMS2 indexing (FFVideoSource) or one of Donald Graft's hardware decoder source filters (DGDecode...), using the "File Indexer" tool in MeGUI. They would certainly deliver the decoded frames as they are, in optimal quality, without any possibly surprising and unexpected post-processing.

I would not even be sure that you have telecined video in a HD resolution. Are you really sure that it has a 3:2 Pulldown pattern?

Yes, I'm using the DirectShowSource. After all it gives me more options for the file, should I use the FFVideoSource then?
It is a bluray official it was a 480i dvd upscaled.

[bebetoalves]

It looks like upscaled standard definition video in those pictures. But there's no way of saying for sure since we don't know exactly how you prepared the images.

If you really have interlaced video you need to deinterlace before downscaling. And decimating doesn't make sense unless it's film based. If it's film based it should be field matched before decimating.

For true interlaced video:

DirectShowSource("D:\STREAM\00003.m2ts", fps=29.970, audio=false, convertfps=true).AssumeFPS(30000,1001)
Yadif(mode=1, order=1) # or order=0, whichever is appropriate
Spline36Resize(1280,720)

For telecined film:

DirectShowSource("D:\STREAM\00003.m2ts", fps=29.970, audio=false, convertfps=true).AssumeFPS(30000,1001)
TFM() # field match
TDecimate() # remove duplicate frames (1 in 5)
Spline36Resize(1280,720)

The result of the first script is 59.94 fps with the smooth motion of the original. The result of the second script is the 23.976 fps of the original film.

There are many other possibilities. You should post a sample of the original video (not reencoded).

And Spline36Resize() is not a neutral resizer. It sharpens and will exacerbate the oversharpening halos already in your video.

Added video sample.

[jagabo]

Added video sample.

I don't know about others but I can't download from that site. You can upload up to 500 MB files to this site using the Upload Files/Manage Attachments button below the edit boxes.

[manono]

I don't know about others but I can't download from that site.

Me neither.

[bebetoalves]

I don't know about others but I can't download from that site.

Me neither.

Done

[manono]

It's pure interlace. You couldn't figure that out for yourself? As jagabo suggested earlier, bob it to 59.94fps for best results. And the best bobber is QTGMC, although it's very slow.

[LigH.de]

With a not too slow preset, QTGMC can achieve a reasonable speed. TDeint or Yadif may be "less perfect", but probably faster. Remember to use their bobbing mode, 720p supports "double framerate" compatible to Blu-ray and related players.

[jagabo]

If you want to try reducing the oversharpening halos:

LWLibavVideoSource("exemple.mkv") 
SetMtMode(2)
QTGMC(preset="fast") # or as slow as you can stand
Dehalo_alpha(rx=4, ry=5)
Spline36Resize(1280,720)
Sharpen(0.3)

That gets rid of most of the halos but loses a little detail. You might be able to keep more detail by adjusting the other dehalo_alpha() settings like brightstr, darkstr, lowsens and highsens.

[bebetoalves]

If you want to try reducing the oversharpening halos:

LWLibavVideoSource("exemple.mkv") 
SetMtMode(2)
QTGMC(preset="fast") # or as slow as you can stand
Dehalo_alpha(rx=4, ry=5)
Spline36Resize(1280,720)
Sharpen(0.3)

That gets rid of most of the halos but loses a little detail. You might be able to keep more detail by adjusting the other dehalo_alpha() settings like brightstr, darkstr, lowsens and highsens.

Thanks, i will try.

[ron spencer]

what final script did u use for it all?