Mythbusters Deinterlacing

[ACoolie]

I'm doing an x264 encode of some Mythbusters episodes ripped from an R1 DVD. Speed is of little importance (I'll be doing a lossless pass).

The opening sequence is a complete terror, and there is lots of high-motion clips that blur terribly when deinterlaced. I've done a quick search through the forums, and MCBob was the recommendation, but it's leaving combing.

Basically I've tried MCBob+NNEDI, YadifMod, MCBob, FieldDeinterlace, and TDeint+Vinverse.
They all are ok, but none are giving me the kind of quality I want.
Please don't suggest SeparateFields().SelectEven() as in here (http://forum.doom9.org/showthread.php?p=979316).

The field order changes atleast once so here are two 50MB samples:
http://rapidshare.com/files/160104458/Mythbusters-1.zip
http://rapidshare.com/files/160104461/Mythbusters-2.zip

[linyx]

Have you tried Decomb?

[ACoolie]

Not telecide but FieldDeinterlace was significantly worse than MCBob

[Guest]

They all are ok, but none are giving me the kind of quality I want. OK, I'll bite. What is the "kind of quality" that you want?

[linyx]

Looks to be true interlace not telecine or 3:2 pulldown or whatever you want to call it. Open it in VDub and try the deinterlace filter with blend fields together. If that looks acceptable then i am sure there is an avisynth plugin for that, other than that i don't know what to say. I hate truly interlaced material.:devil:

[scharfis_brain]

this is a motioncompensated/fieldblended conversion of PAL video to NTSC, hence the blurring, ghosting artifacting, and weird staiesteppings.

deinterlace it just with any deinterlacer that suits your needs.
for a reasonable quick and stable deinterlace you might use yadifmod+nnedi. feell free to choose mcbob() or tempgaussmc().

you can't make it better by deinterlacing. the source is that bad from the start.
you might want to use some further filtering...

[Guest]

Worth trying any deblending here, scharfi?

[scharfis_brain]

no deblending possible due to these reasons:
1) mostly full framerate video (50fps -> 60fps). Currently there is now avs approach known to me that would be able to automagically undo this sort of blending.

2) it is a motion compensated/interpolated conversion, this means mostly the motion is very smooth and blend-free. only motion occluded areas either are blended or contain blotchy artifacts.

the only way getting a high quality video is to get the PAL version of this footage.

[Guest]

Currently there is now avs approach known to me I assume you meant "no avc approach". :)

Thanks for the analysis.

[Inventive Software]

I assume you meant "no avc approach". :)

Thanks for the analysis.

"No AVS approach", as in no approach with AviSynth currently works. ;)

[ACoolie]

Wow, thanks a ton for the detailed replies. I'll look for a PAL source or just downsize HDTV then. Thanks!

[scharfis_brain]

be sure to get 50 Hertz HDTV, then....

[Guest]

"No AVS approach", as in no approach with AviSynth currently works. ;) Yes, of course. It was the "now" versus "no" that I was drawing attention to, as it completely reversed the sense of the statement.