Flicker from one clip in another clip

[lachlanr31910924]

Hi everyone,

I've been having an issue over the past few weeks which I have never encountered using Premiere.

When I move clips around on my timeline that have previously sat next to another clip on the timeline, a single frame of that clip remains in the clip I have now moved.

For instance, if I move clip 2 and lengthen it at the front to fit the new section of my video it sits in, a random clip now flickers for a frame in the middle of it. The flicker is a single frame from clip 1 which previously sat in front of it.

Please advise if you have had this same issue and how you fixed it.

I'm using Premiere Pro CC v 12.1.1 (build 10).

Thanks for your help!

[Carlos Ziade]

can you please share a small video showing us more clearly what's happening ?

we need to understand exactly how you are performing the task to be able to help you

[lachlanr31910924]

Thanks Carlosz,

There are two examples in this video: http://vimeo.com/279787209

I have password protected the video so it's not publicly visible on my Vimeo account.

The password is "Adobe"

Thanks again.

[Carlos Ziade]

I mean a screen recording showing us how you are working on the premiere pro timeline and what's happening there please, not an export of your edit

[lachlanr31910924]

I've just watched the exported video attached and upon exporting the flicker isn't in the clips.

Here is footage of the same clips still in Premiere: https://vimeo.com/279787838

Password is "Adobe"

[Carlos Ziade]

This is a playback issue from within premiere, are you using accelerated GPU ?

Do you have your Graphics driver up to date ?

Did you apply Lumetri or any other effects to the clips ? if you remove the effects what happens ?

Did you try to clean the 'Media Cache' ?

Did you try to delete the 'Video Previews' ? or Sequence - Delete Render Files ?

[lachlanr31910924]

I'll try those now. Thanks very much.

[Carlos Ziade]

you are welcome, let me know what happens

[lachlanr31910924 · Accepted solution]

It seemed to happen on slowed down clips. When I sped the clips back up to 100 the flicker went away, but then when I slowed them back down to 50 or 25 it re-appeared.

-Not using an accelerated GPU

-I believe my graphics driver is up to date (I'm working on a 2017 iMac that's only a few months old. Graphics card is a Radeon Pro 580 8192 MB)

-Other than speed change, no other Lumetri or other effects on these clips

-I cleaned the media cache but that appear to change the flicker

I have just deleted the Render Files and that appears to have fixed it.

Thanks again for your help!

[Carlos Ziade]

you are welcome ! for better slow motion, try to shoot on higher frame rates such as 60fps /120 fps,

then drop that footage onto a lower frame rate sequence like a 24/25 or 30fps one without changing the speed.

[lachlanr31910924]

Thanks, I'll give it a go!

[Carlos Ziade]

Shoot only the scenes you are going to make slow motion at higher frame rates not all of them,

if your final output will be a 24/25/30 fps

[Ann Bens]

If you are in PAL-land stick to 25 or 50 fps.

Mixing socalled ntsc framerate with pal framerate can be a big pita.

[lachlanr31910924]

Here is a timeline screen recording: https://vimeo.com/279788622

Password is "Adobe"