ARCT v1.2
Aspect Ratio Calculation Tool

by Ridwan Hughes
Size:   X =    Y =         
Source =
Output width =       
conform to ITU-R BT.601-4 standards
Aspect ratio =
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AviSynth resize & border code:
    
This JavaScript utility is designed for me. I created it because I need to be able to calculate true aspect ratios of letterboxed PAL & NTSC video source and then convert those to letterbox or anamorphic, PAL or NTSC outputs for DVD creation.
The final output aspect ratio hasn't been compromised by blindly sticking to 4:3, 16:9 & 2.35:1 aspect ratio rescaling, because 2.35:1 letterboxed laserdiscs aren't always a perfect 2.35:1 ratio.

Aside from calculating anamorphic outputs of letterbox source, you can input 4:3 source and calculate anamorphic output with black side borders for if you're creating a fully anamorphic widescreen DVD and don't want to zoom+crop the source to fit.


I added VCD/SVCD for those insisting on living in the dark ages of video ;)


If you want to use/see previous incarnations of this script:

ARCT v1.0 / ARCT v1.1