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Cropping & Resizing ??
My question is somewhat elementary but after having encoded a few films this just occurred to me.
Assuming that I crop an anemographic 1.85:1 film that I have ( pre-resizing its going to be 720x576 ) 12 pixels from top and 12 pixels from the bottom thus making new res: 720x552. Now I have noticed that on most guides it says that the next step would be just to resize it to intended res that being in this case: 720x392 HOWEVER should the deduction of black bits not be taken into account here to and also be substituted on this scale to keep proportions?
I guess what I am saying is shouldn’t the actual new size be something like (just dealing with height):
392 - ((392/576)*24) = ~ 376
I think excluding the black bits would equate to 720x376 as the closest match/ proportion to what was intended. Further more DVD players do not look for/ crop black bits they just resize content as is and with 576 if you resize to 392 then crop the black bits you would see that it would equate to about 8 from top and 8 from bottom:
((392/576)*24) = 16.333...
I tried this in VirtualDub and confirm it to be so. So am I correct in thinking what I am about keeping proportions using this method ?
Assuming that I crop an anemographic 1.85:1 film that I have ( pre-resizing its going to be 720x576 ) 12 pixels from top and 12 pixels from the bottom thus making new res: 720x552. Now I have noticed that on most guides it says that the next step would be just to resize it to intended res that being in this case: 720x392 HOWEVER should the deduction of black bits not be taken into account here to and also be substituted on this scale to keep proportions?
I guess what I am saying is shouldn’t the actual new size be something like (just dealing with height):
392 - ((392/576)*24) = ~ 376
I think excluding the black bits would equate to 720x376 as the closest match/ proportion to what was intended. Further more DVD players do not look for/ crop black bits they just resize content as is and with 576 if you resize to 392 then crop the black bits you would see that it would equate to about 8 from top and 8 from bottom:
((392/576)*24) = 16.333...
I tried this in VirtualDub and confirm it to be so. So am I correct in thinking what I am about keeping proportions using this method ?
).
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