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why is it blending frames???
I am so confused! I have a 95 minute uncompressed avi file exported from premiere pro, 23.98 frame rate
I imported it into after effects cs3 to do a simple color correction on the entire file (because it wasn’t working in premiere for some reason). But when I export it it looks different, like some frames are blurry, like they are a blend of two different frames. But motion blur is turned off as is frame blending. I made sure the imported file is interpreted as 23.98 with no pull down and no fields. And when I scrub through it frame by frame in after effects before rendering it out it looks fine.
In a separate file I did that was shorter (about a 20 minute file, same settings as above) it not only blended the frames, but it got “off”. In other words, when I placed the rendered out file on top of the old file to make sure it lines up, it lines up near the beginning, but then gets off. I’m not sure if it did this on the 95 minute file as well because I deleted it before I knew to check. :-/
What on earth is happening??? Again, I checked and it is interpreted correctly, 23.98, no pull down.
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7 Replies
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if it is true 24p, the frame rate should be 23.976 fps in ae. make sure the footage is interpreted that way and that the comp is at that setting too.
the other thing you need to be sure of, is that premiere did not do anything to the footage at export, like add a pulldown or change the frame size (like scale the footage from 720×480 to 720×486)… if it did add a pulldown and scale the vertical frame size, you will get field mush on some frames and that will look like frame blending on those frames…
Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW -
It’s at 23.98 and it didn’t add a pull-down (I exported it microsoft avi with “none” compression), in after effects there are no repeat frames so I know it’s the right frame rate. It’s on the right frame rate setting in after effects, 23.98 with no pull-down.
And I don’t believe it scaled it any differently than 720×480 (it’s the default export setting in premiere cs3, so that should be correct right?)
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Thanks, I’ll look into it but I just used shorthand. I’m assuming that it knows what the frame rate of the footage is. I’ll check it out though, thanks for the heads up! 🙂
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Okay, I checked and it’s 23.976. So that isn’t it. Drats! I was hoping that would be the problem. 🙁
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Are the 2 shots comped together as one, changing position and motion blur applied? that’ll blend frames between cuts
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Only one file used in the project, and motion blur is turned off. Frame blending is also turned off.
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Okay, fixed the problem. The issue WAS the difference between 23.98 and 23.976, but it wasn’t the footage that was 23.98 but the COMP that was 23.98! I didn’t think to check the comp! (or rather I thought I was, but I was just checking the footage)
Thanks for the help!!!
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