Port of MPlayer Yadif deinterlace filter (C-Plugin)

[g3power]

Yes. I did that just a few hours ago. It was slow (aprox. 1-2 fps). The quality was very good, though.

I have been experimenting with 50i->50p for a few month now. The best way I have found until now seems to be Apple Compressor with deinterlacing quality set to better or best. This uses optical flow and is quite slow on both my G5 and Intel machine. It takes about 25x real-time.

With quality set to "fast" (5x real-time) there are very annoying horizontal temporal artefacts in a very short piece of the footage with a barn in the background made out of wooden planks and the camera on a tripod. The same applies to all other methods I have tried.

As the best method I have found to remove the strong video noise from the footage is to use fizick's great fft3d set to an insanely high strength I was looking for a way to get 50i->50p right in AviSynth...

[LoRd_MuldeR]

Yadif is now available in Avidemux too, thanks to the work of Fizick and Mean:
http://forum.doom9.org/showthread.ph...615#post988615

[LoRd_MuldeR]

This post is from Avidemux Board and might be of interest:

Originally Posted by mean

In Fizick version there is maybe a bug

Original

        if (n< (&p->vi)->num_frames)
		next = avs_get_frame(p->child, n+1); // get next frame
	else
		next = avs_get_frame(p->child, (&p->vi)->num_frames-1); // get last frame

I think it should be

        if (n< (&p->vi)->num_frames-1)   <<<<=== 
		next = avs_get_frame(p->child, n+1); // get next frame
	else
		next = avs_get_frame(p->child, (&p->vi)->num_frames-1); // get last frame

[ChiDragon]

Yeah it should be num_frames-1, since a clip with only frame 0 has num_frames=1, one with frames numbered 0-999 has num_frames=1000, etc. Weird that the actual GetFrame call is correct while the If is wrong. :P

[Fizick]

yes, but Avisynth has internal protection anyway (IMO).
Here is a little more serious problem - processing must be modified for very first and very last frame. May be in some time I will update it.

[MuLTiTaSK]

DGindex reported my source field order as top and frame rate as 29,97fps i have field operation set to honor pulldown flags so would my script deinterlace my clip and keep the same frame rate i really want to give this filter a try i been hearing so many good things about it i read the manual and think i got it right i just want to make sure with the pros first before i waste a bunch of hours i hope someone can help me thanks in advance



SetMTMode(2)
Load_Stdcall_plugin("C:\Program Files\AviSynth 2.5\plugins\yadif.dll")
DGDecode_mpeg2source("G:\CAPS\funny budlight clips.mpg",info=3)
ColorMatrix(hints=true,interlaced=true)
yadif(order=1)
crop( 6, 0, -20, -54)

LanczosResize(640,432) # Lanczos (Sharp)

[Fizick]

Script is look correct (you may omit order=1 parameter - yadif can get field parity from DGGecode)
But I do not know about MT compatibility.
Yes, Yadif is for real video interlaced sources.
For another case (real NTSC FILM source with puldown) use another deinterlacer (IVTC).
Yadif is new (Avisynth) filter,
so please post your results here.

[MuLTiTaSK]

Originally Posted by Fizick

Script is look correct (you may omit order=1 parameter - yadif can get field parity from DGGecode)
But I do not know about MT compatibility.
Yes, Yadif is for real video interlaced sources.
For another case (real NTSC FILM source with puldown) use another deinterlacer (IVTC).
Yadif is new (Avisynth) filter,
so please post your results here.

thanks for replying Fizick i changed my script after reading your
post i played it in MPC & VDubMod it looked good and was very fast i'am impressed so far i'am gonna encode some clips with it and post some results on here thanks for porting this gem into
the Avisynth world

SetMTMode(2)
Load_Stdcall_plugin("C:\Program Files\AviSynth 2.5\plugins\yadif.dll")
DGDecode_mpeg2source("H:\yadif_tests\funny_budlight_clips.mpg")
yadif()
crop( 8, 0, -20, -54)

LanczosResize(640,432) # Lanczos (Sharp)
#denoise

[Fizick]

v0.5 fixed the bug

[ChiDragon]

	if (n>0)
		prev = avs_get_frame(p->child, n-1); // get previous frame
	else if ((&p->vi)->num_frames > 0)
		prev = avs_get_frame(p->child, 1); // next frame
	else	
		prev = avs_get_frame(p->child, 0); // cur 0 frame for one-frame clip

	if (n < (&p->vi)->num_frames - 1)
		next = avs_get_frame(p->child, n+1); // get next frame
	else if ((&p->vi)->num_frames > 1)
		next = avs_get_frame(p->child, (&p->vi)->num_frames - 2); // prev frame
	else
		next = avs_get_frame(p->child, 0); // cur 0 frame for one-frame clip

Not saying it's wrong, but why are you getting next for prev and prev for next instead of current for both when there's an out-of-bounds access?

Also shouldn't "else if ((&p->vi)->num_frames > 0)" be "> 1" to check for a 1-frame clip? i.e. wouldn't "(&p->vi)->num_frames > 0" always return 1 if the clip has video at all?

[Fizick]

ChiDragon,
1. I like results with prev instead of current.
2. Oopps! it is bug. Fixed in new release (same version number 0.5).

[Terranigma]

I'll do some tests with this deinterlacer. I've read the document over at your homepage, and what piqued my interest is that it's an adaptive deinterlacer and mode 1. I'll let you know what I think of it when I get a chance.

[Video Dude]

Thanks for the port Fizick.

This deinterlace filter is great. I am seeing no motion artifacts and hardly any jagged edges. And the speed is real time or faster on my machine.

[HeadBangeR77]

Excellent plugin for those with slower PCs, like me for instance
I've just had a quick look at it and encoded a few short samples.

[chipzoller]

Really great (and fast) plugin for straightforward deinterlacing. Thank you, fizick!

[WorBry]

I like it too and am now using it to generate a 50p feed for ConvertMCfps, Scharfis_Brains standards conversion routine.

However, for rendering 50p material (intended for playback at 50p) I see it is quite susceptible to the 'bobby shimmers' (i.e. vertical jitter of (relatively) static areas) as also are TDeint, SecureBob and to a lesser degree MVBob. MCBob of course does a marvellous job in this department.

I was wondering if there is any simple way of correcting for this (i.e. along the lines of a vertical pixel shift on alternate frames) without screwing up the motion?

Also, as an MPlayer plugin I note that Yadif is often used in combination with MCDeint and some report superior results. I wonder if Fizick (or someone) might consider porting MCDeint to AVISynth too?

Edit: Seems the same question was asked earlier this thread:

Originally Posted by g3power

Fizick, Michael recommends using mcdeint in conjuction with yadif. Do you plan to add mcdeint to your port?

to which Lord Mulder commented:

Originally Posted by LoRd_MuldeR

Did you ever try mcDeint in MPlayer/Mencoder/Avidemux ???
It's slooooooooooooooooooooooooooooow and I can't get satisfactory quality out of it...

Havent used AVIdemux myself, but I'll give it a whirl. Lord Mulder, do you have a link for the Yadif plugin itself? I cant get at the AVIDemux 2.4 build (2934) that you link to above as I do not have a 'Proper Web Browser'

Edit2: OK, got myself a proper browser and dowloaded build 2994 (with yadif included). Tried a few tests with some home DV clips. Yadif 3:0 or 1:0 + MCDeint 2:0:10. Very slow (even slower than MCBob) and quality nothing to write home about.

[LoRd_MuldeR]

Originally Posted by WorBry

Havent used AVIdemux myself, but I'll give it a whirl. Lord Mulder, do you have a link for the Yadif plugin itself? I cant get at the AVIDemux 2.4 build (2934) that you link to above as I do not have a 'Proper Web Browser'

You can get latest Avidemux build here:
http://www.razorbyte.com.au/avidemux...2994_win32.exe

Yadif filter is built-in, no Plugin needed for Avidemux

Or did you mean the Avisynth plugin? You can get it form Fizick's site:
http://avisynth.org.ru/fizick.html

And get grid of IE

[WorBry]

Lord Mulder,

Originally Posted by WorBry

Edit2: OK, got myself a proper browser and dowloaded build 2994 (with yadif included). Tried a few tests with some home DV clips. Yadif 3:0 or 1:0 + MCDeint 2:0:10. Very slow (even slower than MCBob) and quality nothing to write home about.

I'm now Opera'tic

[Chainmax]

WorBry, do you think a small addon to the comparison in the "plain deinterlace..." thread with TDeint+TMM and Yadif could be made?

[WorBry]

I still have the source test (interlaced) clips but I'm pretty sure I deleted all of the de-interlaced encodes and the frame shots from them Silly of me I know, but I was desparate for disc space. I could probably do it over again when I have a mo, probably just taking the grabs from the AVS output rather than encoding.

BTW - Whats TMM?