Premiere Pro Export Questions

Posts: 145 - Karma: 524

May 13 2014 4:40PM

Hey guys, Ive been having a few problems with premiere pro recently

1. I shoot at 60fps and I have a 60 fps sequence in premiere, When I try to export at 24fps, the video comes out as stuttery and jittery. How can I fix this?

2. Is exporting at 24fps even that important?

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eheath

Posts: 61110 - Karma: 118,355

May 13 2014 5:02PM

It's all personal preference, every online video player will convert your 60fps file to 30fps.

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StokeFactor

Posts: 348 - Karma: 1,012

May 13 2014 7:56PM

Vimeo for example will accept 24, 25 and 30 fps (or 29,97), so no 24 fps isn't that important. anything over 30 (50, 59,94 or 60) will be converted to half the frame rate by Vimeo so might as well convert it yourself when you export.

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Jwenz

Posts: 8893 - Karma: 7,633

May 14 2014 1:30PM

this should help

https://vimeo.com/help/compression

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Forcillo

Posts: 3801 - Karma: 3,580

May 14 2014 1:49PM

I've run into this before, I just exported again. At 30fps and it came out perfectly. It has to do with dividing the frames up when compressing.

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.qzyxya

Posts: 1479 - Karma: -26

May 14 2014 2:37PM

As far as compression, have you tried using the AME (Adobe Media Encoder) Vimeo presets? I've found the youtube ones to be pretty good and imagine the vimeos would be good too.

Like people have said you might want to just edit the sequence in 24fps if that's the frame rate you're going to export as. The choppy video is just because its only 40% the frame rate

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Holte

Posts: 10730 - Karma: 7,744

May 15 2014 12:02AM

I sort of answered this here, but I'll elaborate.

First off, don't edit at 60. It's not a standard mastering format, so your final video will eventually be converted to 24 or 30. Vimeo and Youtube will recognize that the video you're uploading is 60fps, and they'll automatically cut out every other frame to make it 30fps. If you make a DVD or BluRay, or any tape format, you have to convert it to 24 or 30fps too. So don't spend computing power while you're editing playing extra frames that will eventually get dropped, and personally I think you're better off seeing what the final frame rate will look like while you edit. Edit at whatever frame rate you plan on exporting.

Like the dude above me said, the choppy video is because you're only keeping 40% of the frames that you shot. If you export at 30fps, you'll keep 50% of the frames which will at least keep your motion smooth and constant.

Think of it like this. If you shoot 60 fps you end up with a simple frame order like this:

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22...

Then you cut out 50% frames to go to 30fps, you still have a consistent pattern:

2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26...

But if you cut out 60% of the frames to go to 24fps, your pattern gets messed up.

2, 4, 7, 9, 12, 14, 17, 19, 24, 26, 29, 31, 34...

That's basically a mathematical representation of why your video looks jittery. A smooth shot doesn't skip frame 6 to jump from frame 4 to 7. There are fancy ways to blend your frames to make them look smooth (the poor man uses Twixtor, the rich guys use Terenex boxes) but none of them are simple or painless.

TL;DR - If you shoot at 60fps, edit at 30, and export at 30. If you want to export at 24, shoot at 24 or 48 and edit at 24.

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