[DV to DVD] Aspect Ratio quiestion

[Sergey Nameless]

DV pixel aspect ratio is 0.9 (In Vegas Video reported as 0.9091), so actual size in square pixels will be:
(720 * 0.9) x 480 => [648x480]
-- or --
(720 * 0.9091) x 480 => [654x480]

DVD 4:3 is [640x480], so how should I encode my DV videos for DVD?

[Faceman101]

at 720x480.

[bb]

Just in case newbies might get confused:

720x480 for NTSC
720x576 for PAL

bb

[Sergey Nameless]

Thanks for ansfering. I'm using NTSC, so it should be 720x480.

But when it plays (from DVD) it will be scaled to 640x480 (square pixels), and aspect ratio would not be correct. Or I'm missing something?

[bb]

Either your DVD player or your favourite DVD player software will resize properly during playback.

bb

[Sergey Nameless]

What pixel aspect ratio will my DVD player use? Is it 0.9, and where is it stored?
Because I did not found a place to enter DVD source pixel ratio in CCE encoder.

[Zeppeliner]

CCE doesn't resize, you have to do it via avisynth.

And you don't have to mess with the pixel ratio, it is 720x480 (for ntsc) in both 4:3 and 16:9, your dvd player will resize depending on what you have set the aspect ratio to when you author the dvd (you can set a 4:3/16:9 flag in CCE though so it will playback correctly when you just play the video file on your pc, not the finished dvd)

[theReal]

Commercial DVDs are encoded at 720x480 (NTSC) and 720x576 (PAL), so don't worry, it's the correct aspect ratio.

[mb1]

Read that and all should be clear:
http://www.lurkertech.com/lg/pixelaspect.html

720x480 is non-square pixel resolution
640x480 is square pixel resolution

[tyee]

The ultimate aspect ratio page. FitCD is now using the theory on this page --

http://www.uwasa.fi/~f76998/video/conversion/

tyee

[Sergey Nameless]

Thanks to everyone!

[Spc01]

Read that and all should be clear:
http://www.lurkertech.com/lg/pixelaspect.html

720x480 is non-square pixel resolution
640x480 is square pixel resolution
Sorry to bring this old thread alive .. but i've got an interlaced NTSC video.

Ligos MPEG-2 Decoder gives me:
720x540 - non squared resolution
720x480 - squared resolution

Pixel aspect ratio for NTSC is 0,9 which means that the 720 pixels horizontally are "lost" to 640 (80 pixels less) when watching with non-squared pixels.
That's why i think ligos is trying to keep the 720 pixels horizontally and changes the vertical resolution to 540.

But a problem occours if i want to use 720x540 (square pixels).
Due to interlacing the lines are not odd for 1st field and even for 2nd field .. they're messed up and programs can't de-interlace the video correctly.

So now i have two options:
1. De-interlace source and get 720x540 pixels (with loss of fps and resolution on no movement - still picture)
2. Leave it at 720x480 and add a flag for 0.9 PAR which looses 80 horizontal pixels when played back with non-squared pixels.

What are your recommendations ?
What do you suggest i do for optimal results ?