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afterdawn.com > forums > archived forums > mpeg-1 and mpeg-2 encoding (avi to dvd) > manual resolution adjustment
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Manual resolution adjustment
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davexnet
Senior Member
_ 		29. February 2008 @ 01:25 _ Link to this message    Send private message to this user   
Hello, if I start out with a 624/352 avi (square pixels)
and want to encode it to NTSC dvd, what resolution must I set
in avisynth (along with borders if necessary) so that HCenc
will encode it with the correct aspect ratio ?

I did some calculations, 624/352 = 1.77, therefore for a 4:3 TV,
640/1.77 = 362. So in avisynth,
Avisource("j:\test.avi")
LanczosResize(720,362)
AddBorders(0,59,0,59 )
ConvertToYV12()

Is this correct ? As an experiment I fed the avi in Tmpgenc 2.5
directly and let Tmpg pick the resolution (as it handily does)
Tmpgenc rounded up the size to 368, so I modified my avisynth like this:
Avisource("j:\test.avi")
LanczosResize(720,368)
AddBorders(0,56,0,56 )
ConvertToYV12()

And reran HCenc. So what is the rule for manual resize?
Calculate as I did, then round up to the nearest 8 divisor ?
[ + quote]
MysticE
AfterDawn Addict
_ 		7. March 2008 @ 01:04 _ Link to this message    Send private message to this user   
[ + quote]
Looking for a new burner? Check here.
http://www.cdfreaks.com/reviews/
The reviews also help to determine which media gives the best results.
afterdawn.com > forums > archived forums > mpeg-1 and mpeg-2 encoding (avi to dvd) > manual resolution adjustment
 

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