Participant

Answered

Problem with slowed down 60i footage

Forum|Forum|9 years ago
April 15, 2017
3 replies
2364 views

Hey guys,

I just updated from CS6 to PP CC 2017 and now I am running into some problems with the 60i footage from my camera.

I used to just slow down the 60i to 40% which means 24fps on a 24fps and never had a problem in CS6, always smooth slowmo.

Now with CC 2017 I first got only choppy motion on some clips because it seemed like PP didn't really it was 60i footage PLUS every last frame of the slowed down clips seems to be a frozen, or after trying out some field options and the sequence settings I can't get rid of these interlaced lines in the footage.

Is there something I am missing? Since this slowmo technique worked pretty well in the older version I can't believe it won't work now.

Thanks in advance for any help!

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Correct answer harrisonb52905623

I figured it out I think, you have to make sure your sequence is at 24fps and then drop a 60i clip onto it and slow it down to 40%.

the part where I struggled was not being able to see any extra frames but figured out if you view in anything other the full Rez on your sequence screen while you are editing you will not see the added frames so it will look choppy.

harrisonb52905623Correct answer

Participant

I figured it out I think, you have to make sure your sequence is at 24fps and then drop a 60i clip onto it and slow it down to 40%.

the part where I struggled was not being able to see any extra frames but figured out if you view in anything other the full Rez on your sequence screen while you are editing you will not see the added frames so it will look choppy.

M

Meg The Dog

Inspiring

I used to just slow down the 60i to 40% which means 24fps on a 24fps and never had a problem

That is not correct. 60i is 60 interlaced fields per second, 2 fields per frame, at a frame rate of 29.97. If you want to slow it to 24 fps, then you would slow it to 80% speed.

If you right click on a clip in the timeline and choose Speed/Duration from the drop down menu, you can use optical flow for time interpolation.

Another option would be to Interpret the clip frame rate using Modify > Interpret Footage.

MtD

T

tomstrellerAuthor

Participant

Sorry, of course it is not 24fps when just slowed down, but shouldn't it be when you deinterlace 60i and slow it down? At least it used to work this way in FCPX, too. Can't see why PP cannot handle this.

M

Meg The Dog

Inspiring

You've tried it with Optical Flow selected?

MtD

E

excited_Genie16B8

Legend

I also found the results of PP's deinterlacing...disappointing.

The best recommendation I can make is to stop shooting interlaced. It was a bad idea from the beginning. Shoot 60p, or if you can't do that, shoot 24p and use Optical Flow or plug-ins like Twixtor to get the slow motion.

T

tomstrellerAuthor

Participant

Yeah I thought the same after realizing this issue, but I just want to make the best out of my travel footage before getting a new camera soon, which will shoot 96fps so I hopefully won't run into any issues with slowmotion again soon.

Nevertheless, any suggestions what I could try?

Just to make it clear, first I worked in a 24fps progressive timeline, exported and got the freezing frames at the end of each the slowmo clip and chopped motion in some clips, too, but I guess for these ones I maybe forgot to apply the right field options.

Then I switched to a non progressive timeline which seems to get rid of the chopped motion but now I see the lines everywhere :-|

E

excited_Genie16B8

Legend

any suggestions what I could try?

The same. Optical Flow and Twixtor. Might not come out as good as progressive footage, but might be better than the current Modify work flow.

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