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erratic
1st November 2003, 14:28
Converting PAL to NTSC or NTSC to PAL is very easy with Vegas.

PAL->NTSC

Start new NTSC project (only necessary if you'll be rendering with the Debugmode FrameServer (http://www.debugmode.com/frameserver/)).
Bring in PAL footage.
Right-click on the video track and select Switches -> Reduce Interlace Flicker for better quality.
Render as NTSC.

NTSC->PAL (rarely necessary because almost all PAL TVs and DVD players can play NTSC just fine).

Start new PAL project (only necessary if you'll be rendering with the Debugmode FrameServer (http://www.debugmode.com/frameserver/)).
Bring in NTSC footage.
Right-click on the video track and select Switches -> Reduce Interlace Flicker for better quality.
Render as PAL.

If your source video is interlaced you have to make sure Vegas is aware of the field order. No problem with DV obviously, but by default Vegas assumes that other formats (MJPEG, Huffyuv, etc.) are progressive. In that case select the media pool, right click on a file and select properties. Adjust the field order and pixel aspect ratio settings. Then click on the little disk icon to store these settings. From now on if you import similar video files Vegas will automatically remember the field order and pixel aspect ratio.

I've tested PAL->NTSC and I was very pleased with the result, but it was slow. I have an AMD XP1800+ CPU and converting a 30 second PAL AVI clip (704x576) to NTSC Cropped (704x480) took just over 2 minutes. Apparently NTSC->PAL is even slower because converting that NTSC clip back to PAL took almost 3 and a half minutes.

I'm sure there are faster ways with Avisynth but Vegas users who find Avisynth a bit daunting clearly have an extremely easy alternative.

scharfis_brain
1st November 2003, 14:35
I am interested in, who vegas does this conversion.

does it:
- just drop or duplicate fields
- blend fields together
- motion compensated framrate conversion
???

If it is the last point, it would be really great!

erratic
1st November 2003, 14:42
It certainly doesn't drop or duplicate fields, but I'm not sure how I can tell whether it blends fields or does motion compensated framerate conversion. I was certainly very happy with the PAL to NTSC conversion (tested it on a miniDVD on my TV) and it looked near perfect to me.

scharfis_brain
1st November 2003, 14:48
but I'm not sure how I can tell whether it blends fields or does motion compensated framerate conversion.
This should be quite simple:
do a conversion of a videoclip, that contains a fast and constant-speed pan over a scene.

load this converted video into virtualdub and go through it framewise. If you see blends (ghosting) vegas youst blends, but if the motion is perfect without any blends, it should be motion compensated.

erratic
1st November 2003, 15:44
Well, the motion looks perfect to me, but can you tell from watching this short horse racing clip?
EDIT: [link removed]

scharfis_brain
1st November 2003, 16:11
okay, vegas does a simple fieldblending with a simple bobbing as preprocessor...