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Old 28th May 2008, 20:18   #1  |  Link
MSlv
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convert DVD from 4:3 to 16:9 anamorphic

I have a dvd with an old movie in 16:9 format, but it is letterboxed. Normally, this is not an issue on my 4:3 bigscreen, but on widescreen Tvs, it can become problematic.

Is there a way to reencode the video, crop the top/bottom black borders, rescale it and add a anamorphic flag to the final product? I mean, a simple way, or at least something that will not alter the quality of the video too much (which, may I say, isn't too good as it is)?

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Old 28th May 2008, 20:35   #2  |  Link
setarip_old
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Hi!

Rather than re-encoding the DVD, have you tried changing the display settings on either the standalone player or the widescreen TV?
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Old 28th May 2008, 22:46   #3  |  Link
Susana
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Or use dvdrebuilder, Options tab, AVS Expert options, Convert from LB 4:3 to 16:9.
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Old 29th May 2008, 11:17   #4  |  Link
MSlv
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thank you very much, rebuilder worked excellent. My Fantomas collection is now in anamorphic widescreen!

The stupid companies in my country still author 4:3 or letterboxed DVDs, ignoring the fact that 4:3 TVs are almost absolete...

Now, I have a much bigger problem. How can I make a pan&scan on (or to ) a DVD? The picture is 4:3, but it has black borders to the left and right making it 16:9, and it is anamorhpic. I would like to crop the borders and make it native 4:3. As it is, when viewed on regular TVs the image is in centre with black borders all around it...

Thanks for being of so much help for my first problem and I'm looking forward to hearing a solution for this one.
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Old 29th May 2008, 16:18   #5  |  Link
manono
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Crop(96,0,-96,0)
Lanczos4Resize(720,576)

Encode for 4:3. That's close, anyway. Someone else might come along and want to tweak it a bit.

Does any of this thread have anything to do with advanced authoring? Or any kind of authoring?
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Old 29th May 2008, 16:43   #6  |  Link
MSlv
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Well, unfortunately, I don't think it has too much in common... and I apologize if I have posted in the wrong place. Still, thank you very much for your kindness and advice.
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Old 29th May 2008, 17:22   #7  |  Link
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If the picture has left and right black borders and it's anamorphic cannot be 4:3 (1.33:1). In those cases, its aspect ratio is between 1.33:1 and 1.77:1 (normaly 1.66:1). For example, Stanley Kubrick's Lolita:

(anamorphic dvd)


In this cases, it's not a good idea to convert to 4:3 pan&scan because you have to crop part of the image (left and right).

crop(90,0,-90,0) (very similar to manono suggestion)

90 = [(1024-768)*720/1024]/2 -> (PAL)
90 = [(853.33-640)*720/853.33]/2 -> (NTSC)

With 1.66:1 (16/9), black-pixels width is (1024-576*1.66)*720/1024=48 px, (24+24). And then, you are cropping 180-48=132 pixels.

You could use dvdrebuilder filter editor, recompress, and then edit the IFO's (16/9 to 4/3) with an ifo editor.

A better solucion is activate the pan&scan mode in the IFO. For example, with dvdremake:



and then, edit subtitles pan&scan streams (by default stream 0 is assigned to all tracks):



This way, you can select your preferred view mode in your player.

Last edited by Susana; 29th May 2008 at 17:28.
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