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Composition crops QT despite having the same size as QT clip
hi everyone,
I’m fairly new to adobe after effects but I’ve learnt how to composite and color time on the program. I’m using AF 6.5 for mac.
I realised that the composition appears to crop the image despite having the same settings as the movie file.
my movie file settings are: 720X576 non-square (1.46:1), separating(lower) 25fps DV-PAL
the composition settings are 720X576 D1/DV PAL widescreen(1.42)
i shot the movie with the panasonice dvx 100A (PAL), are my movie settings wrong? I particular, I don’t quite understand the separating(lower) setting. What does that mean?
When I exported the composition, sure enough it was cropped a bit at the sides as ‘expected.’ This is as compared to the original movie output from final cut.
Really appreciate any insight because I hope to use AF as the final output for the film.
thanks!
joshua lim
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3 Replies
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[Joshua Lim] “my movie file settings are: 720X576 non-square (1.46:1), separating(lower) 25fps DV-PAL
the composition settings are 720X576 D1/DV PAL widescreen(1.42)”
There’s your problem. Interpret your footage files as D1/DV PAL. If the footage is widescreen 16:9, then interpret as D1/DV PAL Widescreen. Make sure your comp settings are also correct – widescreen or not.
You should interpret all DV footage as lower field first, and render back to lower field first if you are rendering to DV.
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i was reading about the lower field dominance,
i recorded my footage on a panasonic dvx 100A on progressive scan mode for PAL 25fps
from my limited understanding, this means there is no interlacing but truly 25 individual frames a second. Please correct me if i am wrong.
i uploaded to finalcut pro as regular DV PAL (there is no other option that worked) and exported the QT for AF.
in this situation should i still go with lower field? or should i turn it off since there is technically no interlacing?
please guide me!
thanks a billion!
joshua lim
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You’re correct. If your footage is progressive then you should interpret as full frames.
Then it’s up to you whether you render out interlaced or not. Chances are you want the entire production to look non-interlaced, in which case turn off field rendering in your Render Settings. Rendering fields with non-interlaced source material can sometimes create unexpected problems anyway. Just remember that fast moving objects can “jitter” when non-interlaced.
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