Help on deinterlacing

[Sharro]

Dear Sirs,

After 1 week of encodes, searches, reading I'm ready to ask for help.

I'm using:

VdubMod 1.4.13
Avisynth 2.5.1
Koepi's Xvid 08032003

I tried:

dvd2avi with field operation swap field order and none

Decomb: Telecide (guide=2/0; post=false/true; chroma=false/true; gthresh up to 80 also different thresh; blend=false/true) and FieldDeinterlace with different settings (full=true/false; chroma=true/false; blend=true/false)

Tomsmocomp with Top/Bottom First; Different threshold (0;5;15) and Vertical filter on/off.

In the end? Can't get a decent result and smooth playback.

The url for the cutted vob with big evidence of my problem is:

http://members.netmadeira.com/carlos.santos/teste/InterlacedPal.vob.zip

HELP!!!!!!

Maybe it is a problem with the dvd itself, I really can't figure it out.

Thanking in advance for any help provided.

Best regards,


Sharro
aka Carlos Santos

[Guest]

You have simple interlaced PAL video. It is NOT progressive with field shift, so it cannot be repaired with Telecide(). I confirmed this by 1) looking at the flags in the D2V file (field operation NONE), 2) stepping through the fields after applying SeparateFields(), and 3) trying and failing to recover progressive frames with Telecide().

Given the above, your only option is to deinterlace if you want to view this on a progressive display, such as a computer monitor. I used the following script and encoded with DivX 5. The result was fully satisfactory to me.

loadplugin("mpeg2dec3.dll")
loadplugin("..\release\decomb.dll")
mpeg2source("InterlacedPal.d2v")
FieldDeinterlace()

What improvement are you seeking?

[Sharro]

Neuron2,

Thx for you'r fast reply.

I just redid my tests with FieldDeinterlace() just to be sure I didn't missed something. Here is what I need improvement.

In the beggining of the clip the dancers in red moving left/right/left. Pay attention to the rightmost dancer´s face and tell me if there is nothing wrong about it.

On some frames looks like we have information from 2 fields on the same frame and the movementis jerky.

If this doesn't happen to you. Then I have something wrong on my side.

Thx.

Regards,


Carlos Santos

[DJ Bobo]

or


fielddeinterlace(blend=false)

[Guest]

I see only motion blur and ghosting from the blend deinterlacing. To remove the latter, use blend=false as stated above by DJBobo.

[Sharro]

Thx Dj and Neuron2 I wouldn't be asking for help if I hadn't already read the readme/forum searches *interlac* pal and tried many different settings.

In none of them I found a balance of blurriness/ghosting/jerky playback pleasant to my eyes.

Maybe it's just me expecting a miracle :-))

Sorry.!

All the best,

Sharro

[DJ Bobo]

You may also try

Bob()
SelectEven()

[Guest]

Originally posted by Sharro
Maybe it's just me expecting a miracle. Sounds about right. :)

[Sharro]

DJ Bobo,

THX!!!!

Bob()
SelectEven() worked better than anything else. The motion ain't the smootest (but on the dvd it ain't that good anyway) but no ghosting and the image is sharp.

Sorry that my tries were mainly over different settings for Telecide and FieldDeinterlace.

I've been reading www.100fps.com and doom9 and if I understood bob I (correct me if I'm wrong):

-split the fields (each field became a frame)
-I loose half the eight
-select the even frames (0,2,4 and so on)
-I resize

The only think I don't get...is how come the result look better than any other method for which I didn't loose fields?

Thanks for all help.

I'm giving a last try to tomsmocomp with a low SearchEffort (0 or 1) what he defines as a smarter bob.

All the best.


Sharro