DivX/XviD Aspect Ratio's

[DaMasteRZ]

Hello,

I'm pretty new to using Ulead Video Studio 10 Plus so forgive me if this has been answered a thousand times before.

I am in the process of backing up my DVD collection to the DivX/XviD format and burning the resulting files to Blank CD's for playback on my PC. What I wish to know is there anyway to determine the correct aspect ratio for any particular movie?. When I select 16:9 and 720x576 as my default resolution the resulting file comes out at the wrong aspect (sometimes it looks stretched, squashed or I get black bars either side of my monitor so the movie looks cut off etc). I have even taken into account the aspect ratio on the back of the DVD (1.85.1, 2.35.1 etc..) but I still cant work it out.

Can anybody help me determine the correct aspect ratio so I can manually set this in the encoder settings?. Can I run the VOB file through another program to get the aspect ratio beforehand etc?.

Please Help!!... DaMasteRZ.

[heinz-oz]

The correct aspec ratio is already present with your clips. Where did you get these from? Do these DVD's have differing aspect ratios?

Basically, if I understand correctly what your intentions are, you should only recode these files to a different compression like DiVX or Xvid and leave the frame size unaltered. Changing the frame size (aspect ratio) would require the file to render to this different aspect ratio/frame size, resulting in a deterioration of overall quality. Depending on the source of these clips, you might find they all have different frame sizes whilst 4:3 aspect ratio, even more so with 16:9 aspect ratio.

The aspect ratio is one thing, the other is the frame size (NTSC legal DVD frame sizes are 352x240 (MPEG-1 or 2) or 352x480, 704x480 or 720x480 MPEG-2, these are 4:3 aspect ratio), comparing standard DVD, you have frame sizes PAL 720 x 576, 25 fps and NTSC 720 x 480, 29.97 fps which are both 4:3.

It gets a lot more confusing because 16:9 NTSC is also 720x480 and PAL 720x576.

Because you want to view your files on the PC only, leave the frame sizes alone and just compress the files to your chosen format.

[DaMasteRZ]

Hey,

What I'm saying is if I leave the settings as they are, the resulting DivX/XviD file looks wrong on my PC monitor. If I encode the VOB file through a different program such as Gordian Knot (which is an all in one encoder) it resizes the dimensions to varying degree's, I encoded one the other day which Gordian Knot decided to be 720x384 from the original which was 720x576 (16:9, Letterboxed), when I played this file back on my PC it looked fine. If I try and encode the same file in Video Studio 10 it leaves the framesize as 720x576 but when I go and play it back on my PC the picture looks cut off either side (like 2 vertical black bars are on each end). Another file I encoded 672x386 in Gordian Knot which looked fine again on my PC from an original of 720x576.

I hope this makes some sence, please if anyone can help that has been working with XviD/DivX and it's screwy aspect ratio's.

DaMasteRZ[/img]

[Ron P.]

I don't encode to XviD or DivX, however just a thought.. Since your intention is to view these on your computer, are you checking the box Perform Non-Square Pixel Rendering Computer monitors use square pixels while TV uses Non-Square pixels.

[sjj1805]

Please view:
Encoding videos with DivX on videoStudio