Quantcast KDVD: Correct Aspect Ratio Conversion Process - digitalFAQ.com Forums [Archives]
  #1  
09-15-2005, 12:18 AM
supermule supermule is offline
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Hi,

Can someone please explain, what is the correct and timeproven method of conversion of aspect ratios from 1:1 to anamorphic. The more I read, the more confused and lost I get. I would appreciate if someone can explain the step with example so that I can then convert it onto a parameterized formula and use forever.

for eg. lets say

source : 640 x 272
destination : 720 x576 anamorphic

How do you convert (step by step) and what would be the resize/border values.

Thanks,

PS: Does FitCD do a good job of it. I get confused with the parameters to be selected for the source.
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09-15-2005, 02:55 AM
Dialhot Dialhot is offline
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Quote:
Originally Posted by supermule
How do you convert (step by step)
1/ open FitCD
2/ enter the source parameters
3/ select the dest parameters
4/ copy past the result found by FitCD into your script.

There is no need to do that manually.

PS: there is no confusion to have, just open the source and FitCD set all automatically.
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09-15-2005, 03:41 AM
supermule supermule is offline
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Thanks Phil, but in FitCD, I work with the default values for Source or do I change anything ??? (I know I have to select "Anamorphic" in the destination).

What is the relation between the "real aspect" ratios of the source and destination. Do I have to strive to keep them as close to each other as possible.!!!
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09-15-2005, 03:47 AM
Dialhot Dialhot is offline
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Quote:
Originally Posted by supermule
Thanks Phil, but in FitCD, I work with the default values for Source or do I change anything ??? (I know I have to select "Anamorphic" in the destination).
The only thing that you have to change on your first use of the tool are the "round to" slides. Set them to "4" for both height and width. Except this, you have nothing to do (this suppose that the avi have been correctly encoded, i.e. that no A/R distortion have been done at this time).

Quote:
What is the relation between the "real aspect" ratios of the source and destination. Do I have to strive to keep them as close to each other as possible.!!!
Yes the idea is to have them as close as possible. But FitCD does this automatically if you select the "accurate" crop mode. Sometimes this automatic mode is not the best and you will have to "play" a little with other modes but for now, just use fitCD in automatic, it wil fullfill your needs.

Note: don't forget to select "1:1 monitor" as source A/R. This is the most important !

Edit : this is what you will have in the end with an overscan set to 2.
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09-15-2005, 03:52 AM
rds_correia rds_correia is offline
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Given the source res (640x272) I am betting that this can well be an AVI.
I don't recall it right now but I think FitCD will create a script with a DirectShowSource("...").
Maybe it would be advisable to use an AVISource("...") instead.
Cheers
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09-15-2005, 04:07 AM
Dialhot Dialhot is offline
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Quote:
Originally Posted by rds_correia
Maybe it would be advisable to use an AVISource("...") instead.
I never notice what FitCD use because you should not use other lines that resize/borders and out that in your own, better designed, script. That is a second "good advice" to take give
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09-15-2005, 04:11 AM
supermule supermule is offline
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Quote:
Originally Posted by Dialhot
Quote:
Originally Posted by rds_correia
Maybe it would be advisable to use an AVISource("...") instead.
I never notice what FitCD use because you should not use other lines that resize/borders and out that in your own, better designed, script. That is a second "good advice" to take give
Very true, I will use it only for resizing and borders, rest I will customize myself.

Thanks all,
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09-15-2005, 04:21 AM
rds_correia rds_correia is offline
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Quote:
Originally Posted by Dialhot
That is a second "good advice" to take give
You're absolutely right .
Only use the resize/borders part of the script generated with FitCD .
Cheers
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