Sample Aspect Ratio calcutions
Source/Encoded Resolution ( X:Y )
Desired Display Resolution/Aspect Ratio ( H:V )
The formula to calculate PAR/SAR
Y ÷ X ÷ V x H = SAR fraction
for example a NTSC 16:9 with resolution 720:480
480 ÷ 720 ÷ 9 x 16 = 1.185185185... (32/27)
therefore the Sample Aspect Ratio that should be keyed in in MeGUI is 32x27
for NTSC 4:3 with resolution 704:480
480 ÷ 704 ÷ 3 x 4 = 0.88888...(10/11)
SAR = 10x11
CROPPING without resizing
won't affect the SAR
Any comments on the way I calculate SAR?
I took quite some time to understand that
SAR is actually the ratio of every single pixel..not
the ratio displayed by the video frame
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