Avi 2 Vcd & keepin Aspect Ratio

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Avi 2 Vcd & keepin Aspect Ratio

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AlanTiger

Junior Member

13. May 2004 @ 15:17

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I probely over looked the answer and I apologze if thats tru,Im using Mainconcept right now, but when i try to convert a widescreen vid it converts to fullscreen, and stretches the file picture and make everything look taller, what can i use to keep the aspect ratio correct, I think what I need to do is add black borders to the file in order to keep the aspect butdont know how to do it, Quality is not my #1 concern, just watchability without worring about artifacts and blurryness

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This message has been edited since posting. Last time this message was edited on 13. May 2004 @ 15:19

brettski

Newbie

14. May 2004 @ 18:37

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To be honest the most accurate way is to frameserve your video file to MainConcept to maintain aspect. There are lots of tutorials on Frameserving via "Google" - you can use VirtualDub or simple programs like FitCd or MovieStacker. They all require "AviSynth" be installed first. But if you don't want to frameserve, this is the method I have found to work for SVCD. It involves math and is approximate only.
In MainConcept you go "Details" > "Crop & Scale" and change the "Height" to answer you get from the following equations:

For Letterboxed SVCD NTSC:

Calculated Height = [(720 pixels divided by Pixels X) times Pixel Y] divided by 11/10

Therefore for example if your original .avi file is 576 by 320. your calculated height would be [(720 divided by 576) times 320] divided by (11/10) or [(1.25) times 320] divided by 1.1 or [400] divided by 1.1 or 364.
So for your new calculated height in MainConcept you would use 364. So you click on "Details" > "Crop & Scale" and change "Height" to 364. The "Width" should remain 480 and both "Centre"s should remain 240. Make sure that the "Keep proportions" box is UNchecked.

For letterboxed SVCD PAL:

Calculated Height = [(720/Pixels_X) x Pixels_Y] divided by (54/59)

Hope this makes sense.

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This message has been edited since posting. Last time this message was edited on 14. May 2004 @ 19:00

AlanTiger

Junior Member

14. May 2004 @ 20:09

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Thanks for the reply, ill try it out and get back to you on it as soon as i get a chance, ill be bsy with a few other projects for the next few days

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Read our DVD to VCD guide.

Download TMPGEnc from here.

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