Crop & deinterlace

Deckerr · 24th July 2005, 09:26

Hi

I have got a video I want to crop and add borders to. From what I understand if the video is interlaced you should keep it that way. But the only way I can get it look right during playback is to deinterlace it. Is there another way to do it? Below is my script I used.

Thanks

MPEG2Source("c test.d2v")
FieldDeinterlace()
Crop(4,122,-0,-126)
BicubicResize(720,436)
AddBorders(0,70,0,70)

Mug Funky · 24th July 2005, 11:00

if you're cropping by even numbers (inevitable in YV12...) you can get a speed increase by cropping before deinterlacing - field-order will be preserved.

Guest · 24th July 2005, 13:43

Quote:

Originally Posted by Deckerr

I have got a video I want to crop and add borders to. From what I understand if the video is interlaced you should keep it that way.

That's true only if you want to display the video on an interlaced device. If you want to watch it on a progressive display, such as a PC monitor, you'll want to decomb it.

Quote:

But the only way I can get it look right during playback is to deinterlace it. Is there another way to do it? Below is my script I used.

The script is OK and Mug Funky's suggestion is correct and useful.

Deckerr · 24th July 2005, 14:23

Yep I changed it to the Mug Funky's suggestion.

But now I'm confused... From reading your answer's before neuron2 are you calling my "FieldDeinterlace()" as your "decomb" because this is your prefered term of use? And if so a PAL TV is progressive right and I can encode the video as progressive with my encoding software?

Video Dude · 24th July 2005, 15:02

PAL TVs are interlaced. If you play deinterlaced video on an interlace TV your results will look bad.

FieldDeinterlace() is only one part of Decomb

Deckerr · 25th July 2005, 17:40

So do I have to deinterlace and decomb? I did some reading on decomb but I'm still lost. If decomb should be used can you show me a script example please.

I've also realised that there is no reason to crop all the film and add borders again, just cropping some of it and leaving some of the borders seems a better option. This is the latest script that works ATM.

MPEG2Source("c test.d2v")
Crop(4,56,-0,-60)
FieldDeinterlace()
BicubicResize(720,576)

24th July 2005, 09:26	#1 \| Link
Deckerr Registered User Join Date: Jun 2005 Posts: 47	Crop & deinterlace Hi I have got a video I want to crop and add borders to. From what I understand if the video is interlaced you should keep it that way. But the only way I can get it look right during playback is to deinterlace it. Is there another way to do it? Below is my script I used. Thanks MPEG2Source("c test.d2v") FieldDeinterlace() Crop(4,122,-0,-126) BicubicResize(720,436) AddBorders(0,70,0,70)

24th July 2005, 11:00	#2 \| Link
Mug Funky interlace this! Join Date: Jun 2003 Location: i'm in ur transfers, addin noise Posts: 4,555	if you're cropping by even numbers (inevitable in YV12...) you can get a speed increase by cropping before deinterlacing - field-order will be preserved. __________________ sucking the life out of your videos since 2004

24th July 2005, 14:23	#4 \| Link
Deckerr Registered User Join Date: Jun 2005 Posts: 47	Yep I changed it to the Mug Funky's suggestion. But now I'm confused... From reading your answer's before neuron2 are you calling my "FieldDeinterlace()" as your "decomb" because this is your prefered term of use? And if so a PAL TV is progressive right and I can encode the video as progressive with my encoding software?

24th July 2005, 15:02	#5 \| Link
Video Dude Senior Member Join Date: Apr 2004 Posts: 1,054	PAL TVs are interlaced. If you play deinterlaced video on an interlace TV your results will look bad. FieldDeinterlace() is only one part of Decomb

25th July 2005, 17:40	#6 \| Link
Deckerr Registered User Join Date: Jun 2005 Posts: 47	So do I have to deinterlace and decomb? I did some reading on decomb but I'm still lost. If decomb should be used can you show me a script example please. I've also realised that there is no reason to crop all the film and add borders again, just cropping some of it and leaving some of the borders seems a better option. This is the latest script that works ATM. MPEG2Source("c test.d2v") Crop(4,56,-0,-60) FieldDeinterlace() BicubicResize(720,576)