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Premiere Pro CC Flickers after render--- client not happy

Forum|Forum|11 years ago
December 12, 2014
18 replies
41418 views

Hello I have been having a very annoying issue with Premiere pro CC 2014 (with the most recent update released in November, it also happened before the update).

Certain portions of my video will flicker, but it only shows up after the render. I can watch the video just fine in a sequence and it does not flicker.

I try re-rendering the project and the flicker will appear in a different portion of the video instead. It is so random and I feel I have no control or ability to fix it

I have provided a video link to show the problem I am having. This video is from different projects filmed in different lighting and scenarios, and different cameras. All of them have it. The only thing they all have in common is that i used the RGB curves to bring up the blacks and adjust highlights.

Adobe Flicker on Vimeo

The footage was shot on the Panasonic GH3 and the Panasonic HMC150. All filmed in 24ps. I also am outputting the video in 24fps. The examples in the video I have shown have all been saved in different formats such as h.264 for web, h.264 Blu-ray, and mpeg2-Bluray. It seems that the format does not make a difference it flickers either way.

It is also not lighting as it even happens outside in the sunlight, and if it were light flickering I would experience the issue on my camera while filming or at least see it during editing. But it only appears after I render.

I render using the graphics card Cuda engine

Here are my computer specs

Windows 8

Intel I7 processor

Nvidia Geforce GTX 750 ti

8 GB ram

This topic has been closed for replies.

Correct answer Grizzly

I have a similar issue with video flickering but it caused by applying an effect on an ajustment layer. If I apply the effect directly to each piece of video there is no flickering.

Show previous replies

Kevin-Monahan

Community Manager

Hi Matt,

We believe that this is fixed in an upcoming version of Premiere Pro. Sorry for the inconvenience. Certain color correction effects can cause the issue, especially when applied to Adjustment Layers, but can even occur when directly applied to clips. Other things in common are NVIDIA GPUs and Windows OS.

Some of the effects include Three-Way Color Corrector, Curves, Unsharp Mask, and Brightness and Contrast.

Thanks,

Kevin

Kevin Monahan - Sr. Community and Engagement Strategist – Adobe Pro Video and Audio

anthonyr70754202

Participant

Hi Kevin, any idea when the update will be coming??

I'm having the same issue.

Thanks

G

Gabrz

Participant

I got the same problem and I have a GeForce GTX 970, 22 gig of RAM and a Intel Xeon 1620 - 3,60ghz... I'm still searching. The problem appears 3-4 days ago.

G

GrizzlyCorrect answer

Participating Frequently

I have a similar issue with video flickering but it caused by applying an effect on an ajustment layer. If I apply the effect directly to each piece of video there is no flickering.

D

Dabram

Participant

Hi Matthew

I'm a total newbie to video shooting and editing, and having exactly the same problems as you. Most of the expert advice above is way over my head, so I was wondering if you managed to find a solution and if so, what it was?

It seems from posts on other forums this problem is widespread, and may have something to do with adding effects to the clips. I plan to conduct some experiments - render out without effects etc - to try to get to the bottom of it. But no-one I've encountered online has been able to resolve the issue.

I'm working from an internal hard drive with plenty of room, and loads of RAM on my machine. The problem only occurs with large files off my Panasonic Lumix GH4, with clips downscaled from 4K to 1080p. I'm not having any issues rendering clips shot on a GoPro 3+ , with effects added. Nor with clips off my iPhone - only the GH4.

Any suggestions gratefully received.

M

matthewd35Author

Known Participant

Hey Dabram

The problem seems to be happening less for me now.. I don't have a clear solution for it.

Now before I do a final render, I will pre render all the footage in the timeline. For me the only time i have the footage flicker is when I add an effect, It never does it on just straight footage. After the footage is pre-rendered I will then watch through to see if there is any flicker. If there is then I go to the effect and just make a tiny tiny adjustment to something. That seems to get rid of the flicker.

I then render out the final video. Watch again, if there is flicker. Then I go back to that spot in the timeline and make a tiny tiny adjustment, and render it out again.

It is totally unacceptable that I have to do this, and is a big time waster when I have a schedule to meet. I would appreciate if Adobe would fix this.

D

Dabram

Participant

Hi Matthew

Since I made this post, I managed to talk to someone in Adobe tech support about this flickering problem, and, predictably, they suggested the root of the issue was lack of processing power in my computer (even though its specs fall well within the minimum cited fr Premiere Pro CC).

When I made further enquiries, my machine does indeed look well under spec for editing 4k video, and adding effects demands a lot more processing power. It's certainly very slow at every stage, from browsing media to playback and rendering, and can't draw on CPU Acceleration. And I don't think merely adding a bigger graphics card is the answer, as the processor needs to be beefier too.

There's no way of knowing without spending the money (a lot of it) to upgrade to a machine that's optimized for the job, but my guess is that Adobe are right. Why? Because the problems only occur when I'm using my Lumix GH4 camera, which shoots at 4k. Clips off other cameras render out cleanly with effects (albeit slowly).

M

matthewd35Author

Known Participant

Okay so I tried rendering one of the small clips again, I made absolutely no changes and it rendered out just fine no more flicker.

This is fine for small clips (20 seconds) but the issue is different for a larger video.

If I render a large video a second time the flicker will disappear from where it was originally, but then show up in a new spot that it was not in before!

It is a huge time waster to continually re-render all the time and hope it disappears.

Safeharbor suggested to render software only, which I have done and still no different.

I just recently got the new video card, in the video example I posted, some of the clips were rendered software only and others were with the video card.

My export settings are Adobes preset ones for youtube HD or for Bluray export, I don't mess around with the bit rate or anything else.

shooternz

Legend

That is puzzling and that flicker is awful.

I have been exporting loads of H.264 ( basically Youtube presets) all week with none of that showing.

Wish I could advise.

shooternz

Legend

What are your export settings?

Any third party FX applied to sequences?

M

matthewd35Author

Known Participant

No just the RGB curves that is in Premiere Pro

Peferling

Inspiring

You need to do a careful process of elimination by conducting an experiment. That is, take a troubled sample of your edit into a new project and experiment with the following:

Render just the raw clip without any effects applied to your 24p setting -if it still flickers, that will rule out whatever FX you've already applied in the problem project.

Try rendering again with usual settings and this time turn "frame blending" on.

Try adjusting the Anti-flicker filter under the motion settings in the effects panel.

Try rendering out it to 29.97 from 29.97 sequence.

Apply the broadcast color filter, set to reduce luminance, and limit IRE to 100.

Turn off hardware acceleration and render in software.

S

SAFEHARBOR11

Participating Frequently

Just in case this is a display card driver issue, can you try rendering a sample in software mode once? Definitely seeing the flicker on the Vimeo sample

Thanks

Jeff Pulera

Safe Harbor Computers

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