Video dimming/flickering after rendering or encoding

Hello and thanks in advance,
I am trying to export a project in Premiere Pro CS5 and everytime I do (or render it in After Effects), the video flickers or dims momentarily when titles appear or when I have an overlaying .png image or video animation. I've tried playing with the export settings but nothing positive so far. Any suggestions?

Here's some more details:
I'm viewing the export in the preview panel in After Effects or I will encode a portion of the project as a sample and then view it after...both with the same result.
I'm running CS5 with Windows 7, My source footage is .mov from a Canon Rebel T2i shot at 1280x720 with a frame rate of 59.94. I also have a couple of .png images in the project. The problem happens only during export and rendering, not during normal playback in the editing workspace.

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Ex. A: http://farm9.staticflickr.com/8476/8374160517_0bb791f218_c.jpg
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Coco Biggs
Thanks for the reply with some details. Just a few more details please.
From what you wrote, your export setting is
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DSLR
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I have about 50 video files to export, each 20 seconds to 2 minutes long. They all have Lumetri effects on them (I suppose that's what causes the problem).
I can render 2, maybe 3 videos without problems. The next one might be fine for a while, but then all I get is strobelight frames, flickering, and different color frames. One time I even received a blue screen of death. I restart Media Encoder, add files to the queue, same thing happens. 2 - 3 will work, after that it exports garbage.
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Besides some dip to black and cross transitions the only other effect is a title layer with some static color effects on it, and 2 Lumetri effects (warm midtones and dream 1).
I thought at first maybe it is because I encode in FLV, 1800 mbps, but also when I used uncomressed AVI with the same settings as the original footage the same problem occured.
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OS: Windows 7 64bit.
I did update to the latest GPU driver last night - that didnt fix the problem.
Since I noticed the fans becoming quite loud during rendering, I did put two Ice packs from the freezer on top of the case and pulled it away from the wall a little bit to allow for better cooling (and it did stay a lot cooler with the ice packs).
I do also get funky looking frames inside Adobe Premiere after trying to watch the footage with the Lumetri filter for a while. I'll have to restart the program and it'll work fine.
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@Peter Garaway:
Thanks for the response.
I use two Lumetri effects:
Warm Midtones
Dream 1
Both applied directly to the clip of raw footage which is in the sequence that gets exported. There is actually one sequence, where I fixed some of the footage putting it into another sequence first, then the sequence into the final sequence that gets exported.
All my clips have both Lumetri effects applied to them. The flickering took place randomly, but it would definitely get worse the more I attempted to render (the first 2 to 3 no problems, on the 3rd or 4th maybe a few flicker seconds in the middle, any more would be 100% flickering - if any flickering or only like a green solid...)
Now Shrishti from tech support insisted the problem was within the sequence. And that kind of made sense, because once we successfully rendered one sequence, there would be no more trouble rendering it a second time, even if the program was already in flicker mode. And also for some reason while we were playing around with it when one sequence failed, even after restarting Media Encoder, it would fail again afterwards.
However last night after it failed I would just try again, doing 2 at a time and it would be successful.
Now I say it failed, but of course no errors no nothing... Just as in the result didn't look the way it was supposed to.
Also I want to mention that especially when I kept it running after it failed (meaning you leave it runnning, producing only garbage) the fans of my computer kept running louder and louder. Not sure if it was the GPU or CPU. Rigth now it keeps rendering in Software mode and the fans are barely louder than under normal usage.
I use the AMD catalyst driver which I downloaded from here:
http://support.amd.com/us/gpudownload/windows/Pages/radeonaiw_win8-64.aspx
While Shrishti was trying a couple of different settings at one time the screen went dark, as it came back on there was a message coming from the windows tray, saying the display driver had crashed, but recovered. One time I also received a bluescreen message, which I will try to attach to this post.
well i guess it doesnt have too much information on there other than... what is that? a memory address?
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I get every time after rendering four black bars around the video, I would like to fix this because it is not really professional.

sorry for my poor english, I have a problem with adobe premiere elements 12 when I render I get a video black bars on all sides of the screen, which makes the video smaller. How do I fix this?

Bram Bakker
Are you OK with translating the language English to Dutch? Have you been using the Translate button at the bottom right of the posts to translate what is written in English to Nederlands (Dutch)? Is the major problem that you cannot find the locations that I point to in Premiere Elements?
1. What are the properties of the video that you are putting on the Timeline? The quick way to find this
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From this question I am trying to find out what the properties are for your video - video compression, audio compression, frame size, interlaced or progressive, file extension, pixel aspect ratio. I was hoping that you could tell me the brand/model/settings of the camera recording the video so that I could find the information myself.
2. What are you setting (manually) or the project (automatically) as the project preset that will match
the properties of the video that you are importing? If you do not know, then tell us what you see under
Edit Menu/Project Settings/General and the readouts for Editing Mode, Timebase, Frame Size, and Pixel
Aspect Ratio, even if the fields look grayed out.
Besides knowing the properties of your video, it is just as important to know the project settings. Are you setting them yourself or just dragging the video to the Timeline and letting the project set the project preset automatically? If you are doing nothing, then the answer is that the project is doing the setting automatically.
Either way, you can find out what is being set by going to Edit Menu/Project Settings/General and looking for the reading that you see in the following screenshot.
3. The next big question is "What do you mean by rendering?"
Do you see these black borders after you render the Timeline content in the Edit area to get the best
possible preview of what you are seeing in the Edit area monitor?
or
Do you see these black borders after you go to Publish+Share/ and export the Timeline video?
If your "rendering" refers to the export of the Timeline, please tell us Publish+Share/and then what?
This question 3 should not need a screenshot. The question is where are you seeing the black border in your video.
a. When you are in the Edit Area of the program and you press the Enter key of the computer main keyboard or the Render
button above the Timeline.
or
b. After you have exported your Timeline using Publish+Share/ and one of the export paths.
Please see if any of the above helps. If it does not, then let us try this. In Dutch if you want, describe in your own words
what you are doing in much more detail and post screenshots of the areas involved on your Premiere Elements 12.
Then I will deal with interpreting what you wrote.
We want you to succeed. So whatever way works, that is the way to go.
The answers are in the details.
Thank you.
ATR

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I'm a newbie with After Effects.
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Oh, thank you very much. I will try it soon

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Video dimming/flickering after rendering or encoding

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