'field operation' in DVD-RB

[kisav]

Hi,

Have a question:

Is there a way to configure 'field operation' in DVD-RB?

I have PAL movie and it looks like the source has wrong field order.
If manually changed in DVD2AVI to 'swap field order' the picture look clean and progressive if set to 'none' - blurry and interlaced...


If not is there a work around for this?

Thanks.

[jdobbs]

If you're positive it is wrong (which is rare) you can add this line in the filter editor:

SwapFields()

You can do just about anything with AVISYNTH!

[kisav]

Thank you jdobbs,

but the problem didn't go away... In fact playing .avs in mpclasic shows no change... Here is the avs file:

#------------------
# AVS File Created by DVD Rebuilder
# VOBID:01, CELLID:02
#------------------
LoadPlugin("C:\Program Files\Common Files\DVD ReBuilder\dgdecode.dll")
mpeg2source("E:\DVDRB OUTPUT\D2VAVS\V01.D2V",idct=7)
trim(3450,17201)
SwapFields()
ConvertToYUY2(interlaced=true)



I know this is not DVD-RB problem. Also the only place where it was playing correctly was inside DVD2AVI* with 'swap field order' On. Saving it to .d2v and playing it in mpclasic using:

LoadPlugin("C:\Program Files\AutoGK\DVD2AVI\MPEG2Dec3dg.dll")
mpeg2source("D:\AGK OUTPUT\12s.d2v")
trim(3450,17201)

shows the same problem... :confused:


*(this is an older ver with 'swap field order' option).

[kisav]

Originally posted by Jeffster
Could you not just open the .D2V file in notepad and change "Field_Operation=0" to whatever value corresponds to the swap fields option in the version you are using?


This is the header of d2v created in older ver of DVD2AVI:

DVD2AVIProjectFile03
1
24 I:\VIDEO_TS\VTS_01_1.VOB

Stream_Type=1,0,0
iDCT_Algorithm=5 (1:MMX 2:SSEMMX 3:FPU 4:REF 5:SSE2MMX)
YUVRGB_Scale=1 (0:TVScale 1:PCScale)
Luminance_Filter=0,0 (Gamma, Offset)
Picture_Size=0,0,0,0 (ClipLeft, ClipRight, ClipTop, ClipBottom)
Aspect_Ratio=4:3
Field_Operation=2 (0:None 1:ForcedFILM 2:SwapOrder 3:RawFrames)
Frame_Rate=25000
Location=0,0,0,7FFD8

but it does not help outside of DVD2AVI... It does play perfectly inside using 'preview [F5]'. Tne newer version (dgindex) does not have 'SwapOrder' option at all.

[onesoul]

@ kisav

Just out of curiosity, how does your original Pal Dvd plays on your stand alone? Does it share the same problem?

[kisav]

Originally posted by onesoul
@ kisav

Just out of curiosity, how does your original Pal Dvd plays on your stand alone? Does it share the same problem?

On tv it's not that obvious but it's there... Especially in fast motion frames. Picture looks blurry. (I would call it 'ghost effect'. An object will leave a trail). I probably could put a small sample on ftp.

[Guest]

Just to close out this issue...please see the resolution here:

http://forum.doom9.org/showthread.php?s=&postid=642114#post642114

Does DVD-RB allow for this correction?

[Sir Didymus]

@neuron2.

Yes it does.
One of the very nice features of DVD-RB is the "Filter Editor"; it is an embedded avs editor allowing to place between the trim and the
ConvertToYUY2 statements whatever items the user want.

So your kind suggestion is actually applicable.

Let's wait for some feedback from the poster.

[Guest]

I was thinking that this is a complicated situation for a naive user to know about. Maybe there should be something a little more direct in the user interface, given that phase-shifted PAL is fairly common.

[jdobbs]

Is there any way you can tell it needs to be done other than just viewing it? Any telltale signs in the stream?

[Guest]

Not really. Maybe you could instruct the user when progressive PAL is involved: "If you see combing in the output, try enabling this option (phase shift)."

I don't know DVD-RB at all so whether such a thing fits in I couldn't say.

Now I'm thinking...doesn't DVD-RB just take DVD to DVD, so that the phase shift doesn't matter? Why was this a problem for the OP?

[onesoul]

Hey neuron2,

Dvd-RB has an avisynth script editor, so the telecide function can be easily inserted to process the DVD Back-up. Providing a feature to preview and decide whether the you see combing or not, could be very painfull to a normal dvd-rb user which probably wouldn't distinguish it from interlaced. But it's good to know the method you provided to resolve the one field phase shift on progressive frames, I'll keep it in mind, thanks.

Don't you ever do backup's, dvd-rb it's free you know? :)

[Rockas]

Don't you ever do backup's, dvd-rb it's free you know?

Well I guess its like "Em casa de ferreiro espeto de pau" - this is a portuguese "saying" that means "In the house of the blacksmith all sticks are made of wood" or something like that :D

[Guest]

LOL!!!

For me, backup means ISO copy.

I do play around with what you call backups from time to time, just to test out my tools.

I won't dare ask if DVD-RB can make XviD backups, because y'all will jump on me with "do a search" and "read the FAQ". :)

[Boulder]

Is the messed up encode actually encoded as progressive? Wouldn't that possibly cause such problems?

[kisav]

Just like to say thank you to everyone who participate in this thread.

I ended up modifying .avs in the following manner:

#------------------
# AVS File Created by DVD Rebuilder
# VOBID:01, CELLID:02
#------------------
LoadPlugin("C:\Program Files\Common Files\DVD ReBuilder\dgdecode.dll")
mpeg2source("E:\DVDRB OUTPUT\D2VAVS\V01.D2V",upConv=true,idct=7)
trim(3450,17201)
Telecide(order=1,post=0)
Undot()#.Deen()

@jdobbs

Will such manipulation with the video stream cause a problem later at the 'Rebuild' stage? Does the .flg file contains only frame# and Interlaced or not info?

P.S. I agree with neuron2 on adding an additional entry in AVS expert selection for this (if, of course it is common issue with PAL movies).


Thanks.

[jdobbs]

Yes, if you use any filter that changes the frame count it will cause problems in rebuild.