Problem with deinterlace heeeeeeeelp!!!

[zikario507]

i've a lot of video that it has a rare interlace.. that with my megui.. i can't deinterlace of the correct form...

helpme please... i let us a previews..

interlaced


deinterlaced with all deinterlace filters... less blend.. :S "fielddeinterlace :S"



please help me

[tsuyoshi85]

I'm afraid it is a badly resized rip. That's all I can guess. It will not be easy to deinterlace it. Did you try to use Decomb or TFM?

[jagabo]

If the first image is representative of your source you are not going to be able to fix it. The two fields are hopelessly commingled.

[tsuyoshi85]

Yes. I think jagabo is right.

[zikario507]

ok.. in this preview.. i crop a resize it..!
i'll show the original frame without crop and resize..

interlace


deinterlace with tdeint..


ok.. sorry.. with he bad crop..! it's so ridiculous!!
ok i hope your answers! please

[jagabo]

The video frame size in those images appears to be 720x480. This hints that there is pixel-for-pixel mapping of the source to the snapshot. But I don't know what program you're using to produce them so I can't say for sure. I recommend you open your original video with VirtualDubMod and export a frame as PNG (Video -> Snapshot Source Frame). Then post that. VirtualDubMod will export the frame pixel-for-pixel so there will be no ambiguity about whether the fields are commingled in the source or by the software.

[zikario507]

ok with vdm 1.5 i've this









i think that the video source is commingled
i hope your answer =)

[jagabo]

Yes, the fields are hopelessly commingled. In a properly interlaced video one field (all the even scan lines) contains one half picture and the other field (all the odd numbered scan lines) contains the other half picture. I suspect someone converted an interlaced PAL video to NTSC and didn't resize properly.

[zikario507]

and what solution.. can you give me..

[jagabo]

I don't know of any solution to this problem. You'll have to find a better source.

[guns1inger]

and what solution.. can you give me..

Whoever resized and encoded the video you have screwed it up. There is no fix.

[zikario507]

wow...! it's incredible that this video couldn't fix.. well... a question..!
how can you avoid this video error?

[jagabo]

Don't resize interlaced video with non-interlace aware resizing algorithms. Or deinterlace first.

It's also possible that a PAL source was really progressive but captured out of phase resulting in interlaced frames. That could be fixed by restoring the correct phase -- ie, recombining the fields so that pairs come from the original film frame, rather than two different film frames.

[manono]

how can you avoid this video error?

Avoid what? Avoid doing the same thing yourself? Resize in an interlace aware manner. AviSynth is perhaps the best way. For example, when doing a PAL2NTSC conversion, here's one way:

AssumeTFF()
Yadif(Mode=1,Order=1)
LanczosResize(720,480)
ChangeFPS(59.94)
AssumeTFF()
SeparateFields()
SelectEvery(4,0,3)
Weave()

In the example you gave, it looks to me as if some idiot just took the PAL source and did a direct resize to NTSC, thus creating the problems you saw. When dealing with interlaced sources you have to be very careful when doing filtering of all kinds.

[zikario507]

yes.. always i try... to prevent get a bad video..! it's the reason to create this post.. bcuz.. i downloaded that video.. that it've a bad resize & all hahaha!!!

hey manono thanks you.. for your answer.. at the same time thanks to all people that help me!!!

hey.. what deinterlace filters dont produce jaggies and part of interlace... having a dirty video!!

[manono]

Well, blend deinterlacers are pretty jaggie-free. But there's so much wrong with them in other ways that I, for one, wouldn't recommend one like FieldDeinterlace at the default settings. That leave the interpolating ones and most have problems with diagonal lines, especially when the camera is in motion. In general, the better the deinterlacer the slower it is. If you're very patient, AviSynth's TempGaussMC is the way to go:

http://avisynth.org/mediawiki/TempGaussMC

Because it bobs the video (doubles the framerate), if you like you can remove every other frame with a simple SelectEven() afterwards.

Yadif is, perhaps, better than average about not leaving behind jaggies/aliasing and is quite fast as well:

http://avisynth.org/mediawiki/Extern...#Deinterlacing

And, as you can see from the list, AviSynth has many other deinterlacers also.

[jagabo]

See this video that was posted a while back:
http://forum.videohelp.com/images/gu...mca4_tdtmm.avi

[zikario507]

TempGaussMC_beta1
wow! is extremedely.. slow.. omg
but it give us a good result..!

do not exist any way to improve the performance of this filter? or exist another filter that it give us a good result too but more faster than last!

[jagabo]

TempGaussMC_beta1
wow! is extremedely.. slow.. :| omg
but it give us a good result..!

do not exist any way to improve the performance of this filter?

Get a faster computer? Maybe Avisynth MT version on a multicore CPU. I haven't tried it.

or exist another filter that it give us a good result too but more faster than last!

I don't know of anything that's nearly as good.

[zikario507]

i've an amd athlon x2 7550 BE.. @2.7Ghz.. 2Gb!

but.. i can't use avisynth mt version.. :S bcuz.. it give me an error that say you need avisynth 2.6? or 2.5.6 mod :S

[zikario507]

ok.. i fix my problem but.. it doesnt give me a better performance!!

[jagabo]

Did you enable the MT option? I'm not even sure TempGaussMC works with it. Never tried.

later...

I just tried the AviSynth MT version linked from this post:

http://forum.videohelp.com/topic371557.html#1993934

I added SetMtMode(4) to the top of my script (I have a quad core CPU). Processing speed improved by about 2x when using TempGaussMC_beta1().