Opinion on Super Resolution

[kalemvar1]

Hello.

I'm encoding some dvd into .mkv files. I use TMPGEnc Video Mastering 6 to do so. I deinterlaced double framerate (59,94 fps) progressive and the result is perfect (well, for me and my eyes). I also run few tests with Super Resolution to resize in 1280x720 and the result for me is even better BUT the main problem after is that I encore the result of Super Resolution with TMPGEnc Video Mastering 6 (same settings) but the final files are not as smooth as it should be (compare to only resize with TMPGEnc Video Mastering 6)? Anyone has already encounter this problem with Super Resolution ?

Thanks

[jagabo]

Maybe your computer isn't fast enough to play 1280x720 at 59.94 fps.

[kalemvar1]

Thanks for your reply.

I put them both on TV directly. When I play the an .mkv without super resolution it plays perfectly. But the one with super resolution it's not as smooth as the file without it

[Cornucopia]

That's because with super resolution, you are trading motion fluidity (resolution in the time domain) for greater detail (resolution in the spatial domain). The process uses multiple sequential (similar but slightly varying) frames as additional input to generate the extra TRUE DATA (not just guessed interpolation/extrapolation) needed for the upscaled resolution. Kind of like dithered resampling. But using grouped sequentials means the motion sampling (and changes) gets reduced. And one of the areas where SR is known to fail is in highly compressed footage, especially footage that uses motion-compensated encoding (like DVD).

No surprise you got what you got.

Scott

[kalemvar1]

Thanks for the explanation Scott

As far as you know, is there a way to "fix" that problem? Or you are telling me I should stay with the initial solution and only doing the job with TMPGEnc?

[jagabo]

Upload some short samples. We'll look at them and tell you what's going on.

And to clarify, you're using Infognition's Video Enhancer? Their plugin for VirtualDub? Some other program?

[kalemvar1]

Thanks jagabo,

here are the 2 samples (one without SR, that run perfectly) and (one with SR, that is not as smooth as it should be). Both files are deinterlaced and double frame rates with TMPGEnc Video Mastering 6.

yes I'm using Infognition's Video Enhancer, directly from Video Enhancer software, not the plug-in for Virtual Dub.

Thanks

[Bernix]

Arent both files with same resolution ? Only difference I have noticed is Max bitrate.

Bernix

[kalemvar1]

Thanks for your reply Bernix

When I play both files on tv screen, there is a difference, specially in motion sequence, the one with RS is clearly not as smooth as the other one. I uploaded this sequence to show the difference

Thanks ��

[jagabo]

Your video is telecined film and should be inverse telecined rather that double frame rate deinterlaced.

The TMPGEnc version is poorly deinterlaced with lots of aliasing. A proper IVTC would eliminate that. Or for truly interlaced material, a better deinterlacer like Yadif or QTGMC in AviSynth.

The SR version wasn't deinterlaced properly. There are combing artifacts in some shots.

There is some difference in smoothness between the SR and non-SR versions. The non-SR version has a clean 3:2 repeat pattern, the SR version is a little irregular, something like 2:2:2:4. Maybe Video Enhancer got the field order backward?

[kalemvar1]

Thanks for your reply

My main source is the dvd itself at 29,97 fps interlaced. When I use RS, should I use yadif or a reverse pulldown first? What filter sequence I should make to have a smooth final product ?

[Cauptain]

Try reduced reference frames to 4. Many encoded files has problem on some Smart TVs.


Claudio

[jagabo]

For film based material you want to inverse telecine first. I don't have Video Enhancer or TMPEGEnc so I can't give you specific advice about those programs.

I filtered your SR video to reduce the frame rate to 23.976 fps. I didn't address the bad deinterlacing. You should be able to get better results working with the original DVD files.

[kalemvar1]

Thanks jagobo, thanks exactly what I want, the image is very smooth and natural.

about the filter IVTC, what setting is the best to have NO interlaced artifact and best quality:

Field assembly mode: Decomb frames only
Reduce frame rate

Field Mode: AutoDetect
Top field first (TFF)
Bottom field first (BFF)
Blurred fields
Single field only (remove duplicated frames)

Field blur weighting ?

Pattern phase: Adaptive
Manuel

Thanks for all

[jagabo]

You just want to decomb and reduce frame rate.