Aspect Ratio

[Nyquist]

I have a divx file with an aspect ratio which is 2.35:1 and I'm using DivxToDVD and they can only do aspect ratio of 16:9 and 4:3 but when i do a 16:9 the resulting DVD seems vertically stretched. Is there any way to convert divx to dvd and keep the original aspect ratio?

Thanks, Nyquist

[redwudz]

While I like DivxToDVD and use it all the time, like any all-in-one it has limitations, and that may be one of them.

You could run it through VirtualDub and add black to the top and bottom to pad it out using the resize filter then fast recompress and not lose too much quality. You would then use that file for DivxToDVD.

[manono]

they can only do aspect ratio of 16:9 and 4:3

There are only 16:9 and 4:3 in common use. It's supposed to add the black bars to maintain AR for 2.35:1 movies. It didn't add any? If it did, perhaps your player doesn't honor the DAR. How are you playing to test?

You could run it through VirtualDub and add black to the top and bottom to pad it out using the resize filter then fast recompress and not lose too much quality.

Not if you're using a VDub filter, you're not going to use Fast Recompress. Perhaps you meant to say Full Processing. Still, reencoding to AVI before then reencoding to DVD doesn't sound to me like a very good idea.

[redwudz]

Yes, manono, I should have said full processing. It was late. I've never ran into that problem with DivxToDVD, it usually handles the widescreen format with the bars as you mentioned.

Re-encoding would have a quality loss, but if DivxToDVD doesn't handle it properly, it's one way. Encoding through something like TMPGEnc with more adjustments would be better though, but not easier, at least for that one file.

[Abond]

I have a divx file with an aspect ratio which is 2.35:1 and I'm using DivxToDVD and they can only do aspect ratio of 16:9 and 4:3 but when i do a 16:9 the resulting DVD seems vertically stretched. Is there any way to convert divx to dvd and keep the original aspect ratio?

Thanks, Nyquist

Where it looks stretched? TV or PC?

[Nyquist]

It looks stretched when I play it on my TV, all the other DVDs that I have burned look great. I am in the process on using VirtualDub to add the black bars and then going through DivxToDVD again, looking at the quality of the avis i'm affraid there is to much quality loss reencoding. Any other ideas besides adding the black bars?

thanks

[Bondiablo]

in tmpgenc you would choose 16:9 as your aspect ratio and full screen keep aspect ratio for the video arrange method. maybe there's something similar in divxtodvd.

or instead of adding black bars you might try resizing the video in virtualdub so 16:9 will be correct in divxtodvd.

[video-phile]

Working with tmpgenc you have two choices to avoid distortion.

input file: 720:304 avi divx

1) In order to convert it to mpeg-DVD with DAR 4:3 here are the settings.
output video (video tab) : 720:576 mpeg2 PAL, aspect ratio: 4:3 display
video arrange method (advanced tab) : center custom size 720:324

Explanation. You pre-distort the input frame (multiply by 0.9375).
The factor 0.9375 basicly reflects the distortion of a 720:576 frame in relation to 4:3.
The correction is assumed later by the output video's DAR (4:3 display).

2) In order to make a DVD with DAR 16:9 you set
output video (video tab) : 720:576 mpeg2 PAL, aspect ratio: 16:9 display
video arrange method (advanced tab) : center custom size 720:432

In the same way the DAR 16:9 is going to shrink the 720:576 frame deviding by 0.703125. So you have to pre-distort the input frame the other way round.

Both methods guaranteed.

[Bondiablo]

As long as your "source aspect ratio" is set correctly in TMPGEnc there is absolutely no need for all that. Whether you want the output to be 4:3 or 16:9, all you need to do is choose "full screen keep aspect ratio" for video arrange method.

[video-phile]

As long as your "source aspect ratio" is set correctly in TMPGEnc there is absolutely no need for all that. Whether you want the output to be 4:3 or 16:9, all you need to do is choose "full screen keep aspect ratio" for video arrange method.

What source a.r. setting would then make you happy Bondiablo, eliminating absolutely the need of calculation?

[Bondiablo]

The correct one for the source file you're using.

[video-phile]

The correct one for the source file you're using.

The subject is specific: 720:304 divx avi as input.
What standard values in tmpgenc can do the job and with what degree of accuracy?

[Bondiablo]

Aspect Ratio: 16x9
Source Aspect Ratio: 1:1
Video Arrange Method: Full Screen (keep aspect ratio)

[guns1inger]

I suspect ig you went back your DivxtoDVD output files and checked with IFOEdit you would find that it simply didn't correctly set the disc for 16:9. I have never seen it miss, but it sounds like that is your problem. Change it, re-write the IFOs and Bob's your father's brother, or something.

Which version were you using ?