flashing video

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Video flashing on playback

So I recorded some videos without issue and embedded them into an MS PowerPoint slide show. Then recorded the slideshow with voice over...all in Camtasia 2018.

If I play back the embedded video, it works fine, but playing back the PowerPoint video, it flashes constantly and only shows the very first slide throughout the entire video.

Here's the ONLY difference: When I recorded the embedded video, I was in the office with my laptop connected to a docking station. The monitors are also hooked to the docking station.

But when I recorded the PowerPoint video, I was at my home office, with the laptop connected to its power cord and the monitor connected to the USB on the laptop. That's it. All other applications, settings, etc are the same.

So my question is, would it be the docking station power or video connection at fault here?
I haven't had the chance to test it yet, but hope/plan to tonight.
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Jim O

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Posted 2 months ago

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Kelly Mullins, TechSmith Employee & Helper

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Hi,
I don't have an answer for you... I just need some more information, please.

So, you are putting a Camtasia video INTO the PPT, and when you record THAT presentation that include the video, the VIDEO flashes?
Or, the entire PowerPoint presentation flashes and this is NOT just related to the embedded video?
And, does the flashing only occur when you PLAYBACK THE VIDEO, or while you are RECORDING THE VIDEO.

If you could maybe go over your steps here, on how you are making, presenting, and recording your PPT, someone can try and lend a hand. Also include exactly when the flashing happens.

THANKS!
Kelly
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Jim O

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Kelly, yes, I am embedding a Camtasia video into PP. I've done this a number of times over the years, never had an issue. I made 3 different videos of PP presentations, 2 had embedded videos, 1 did not. All flash on playback. No flashing taking place during the recording. And the recording only shows the first PP slide for the entire length of the recording.

Steps:
1. I record any type of demo video needed in the presentation, and save.
2. I create the PP slide by slide, embed any videos created in step 1 as needed.
Save the PP.
3. I open Camtasia Recorder and record the voice over while I play the PP presentation in real time. Save the recording.
4. Open a new project in Camtasia Editor to edit as needed (voice over mistakes, etc.)
5 Separate the Audio from the video and perform the above edits as needed, save
6. Playback finished video.

Note: at this point I have not done any editing with the file. Once I started the playback of the raw video with the voice over added, I noticed this flashing happening and have been attempting to fix it ever since.

From the looks of it, it seems I'm going to have to record these videos all over again....some 12 hours worth of work.
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dmey503

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Do the flashes occur at the same spots and on multiple computers? That should determine if it's your computer or if it's the video. 

That said...

That seems like a roundabout way to do that project...have you considered exporting your PowerPoint slides as PNGs or JPEGs and then adding your video to the images within Camtasia? You can do the narration directly to the timeline and edit the original recordings rather than editing a recording of a recording.  

Also, my eliminating one of your screen recordings from the equation, it will be much easier to fix defects in the video. 

I suggest that because it seems like a good way to run into trouble if you're doing a screen recording of a PowerPoint with embedded video while doing voiceover. Unless you have a very robust computer, that's asking a lot out of your CPU. It might turn out fine much of the time, depending on the size of the embedded videos and the number of other applications you're running. 

Have you done a test recording, maybe of just a few minutes of your presentation, just to see if it repeats the flashing? If not, try closing out of all Techsmith applications and PowerPoint, then re-open and re-record a couple minutes. I find with Camtasia that I pretty much have to close and re-open it on a daily basis to keep it running efficiently. 

The pain in the a** solutions, depending on the frequency of the flashes, if you want to fix this post-production: 
  • Cut out the flashes on the timeline and then either extend frames or slow down surrounding sections of video so it syncs properly with the audio track.  
  • Re-record the sections of your video with flashes (if it's infrequent) and replace on the timeline.
  • Try my method above so you don't have to edit a screen recording of screen recordings. 


(Edited)
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Rick Stone

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Hi all

Unless I've missed something, from everything I've seen in this thread, it seems what is happening is that a Camtasia video is being produced and plopped into PowerPoint. Then another Camtasia recording is being made of this as the PowerPoint presentation is played back.

It's worth noting as well that recent versions of PowerPoint have an inherent ability to produce videos directly from PowerPoint itself.

So maybe the flashing would perform a disappearing act if PowerPoint were used to produce the video? I have PPT 2016 (Office 365) and I click File > Export > Create a Video to create videos from PPT.

Additionally, there is a way to produce 60FPS videos from PPT if you want extra smoothness. The link below will show you a thread here on how to accomplish that.

Click here to see that thread

Cheers... Rick :)
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dmey503

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I was thinking that myself. I believe the Camtasia add-in within PowerPoint uses way less of your CPU than using Camtasia to do a recording of a recording embedded into a PPP.

Still, I'd do it my way because I only do live recordings with video and audio at the same time as a last resort haha
(Edited)
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Rick Stone

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Hmmm, hopefully someone from TechSmith will pop in to advise on that.

My own view is that the Camtasia recorder is the Camtasia recorder. So CPU usage should basically be identical between the recorder running as launched from PPT as opposed to the recorder running as launched from Camtasia.

It's an interesting thought to ponder. ;)
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Jim O

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Rick, thanks for the tip. I was unaware Camtasia had an add-in for PPT. I will give that a shot too.

I'm just thinking the flashing has something to do with the monitor connection...although the monitor doesn't flash during the recording process, I'm thinking the data Camtasia Recorder is pulling from the monitor/USB port shows up during replay???

Again, it all works like a charm here at the office. I can record the PPT presentation, run the embedded video (created from Camtasia) and add a voice over with zero flashing issues.
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Jim O

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@dmey503,

Yes, this happens on any computer it runs on.

I can record the video as I posted on my laptop here at the office while connected to the docking station and have no issues with the flashing.

But it seems if I am off the docking station and plugged into the laptop's power cord and the extra monitor is connected into the laptop's USB port as opposed to those on the docking station, I get the flashing as I've stated above.

Again, the ONLY difference between here at the office (where it works fine) and home (where is has issues) is the docking station.
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dmey503

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So I'm going to go down an unrelated path here...

Did your docking station issues just start recently? I'm starting to suspect Microsoft did something screwy with their latest update.

Ever since the last major Windows 10 update, both my home freelance laptop/docking station (Targus with 4K output) and my office laptop/docking station (Lenovo with 1080p output) have been going haywire. 

All these issues that have emerged seem to relate to my GPU or display drivers. My computer will randomly disconnect from my docking station when I'm in Photoshop or After Effects, I'll get all sorts of errors with the GPU, OpenGL errors, and on my work computer, I have to unplug the docking station to wake it up from sleep mode, which is so stupid.

I've updated all my drivers and even rolled them back. Still getting this problem.
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Rick Stone

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Definition of an update:

Take out old bugs and install new ones!
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dmey503

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And Microsoft excels at this! Better than most. The best? Perhaps. 

And so I'm officially blaming Windows 10 version 1903 for all of my problems haha
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Jim O

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OK, some updating on this issue. Last night I took the docking station  home and hooked everything up just like I do here at the office. Did a very short recording of a PPT presentation and boom, same flashing as before. WTH?

So, a little more searching and I realized one more difference, the monitor. The monitor I have at home is not the same as what I have at the office. Same type of monitor, just not the same brand. OK, what else could it be? Oh, the connectors. The office monitors are Display Port connectors, whereas the home monitor is HDMI. I change the home monitor to VGA connector since that's all I happen to have at the moment.

Do the recording again and poof.....the flashing is "kinda" gone.
The first slide advances in the video (it didn't before with the flashing) but on the 2nd and 3rd slide, there's a portion of the screen in the video that does. On the 2nd slide it's basically the top 1/3 of the screen, on the 3rd, it's a bit lower.

So from here I decided, screw this, I disconnected the 2nd monitor and decided to try and record it on the laptop display itself. Guess what? Right back to the flashing as it originally did.

So I'm officially stumped. Why the heck would this work fine and dandy at the office with 2 other monitors connected, yet at home, it flashes whether it's got an extra monitor or not hooked up?

I have to get these videos done! I can't do them at the office due to background noise, thus why I do them at home. The ONLY other thing I can think of is to create these on my personal laptop and see if that works.
I've wasted almost an entire week trying to troubleshoot and fix this matter and zilch.


(Edited)
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Rick Stone

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Hi there

Wishing I had more to offer here other than some observational commentary.

Interesting stuff you have going on with the "flashing". I'm guessing that you've tried just a simple recording of perhaps, opening and using Windows Notepad? If so, does it "flash"? And again, if so, are you able to share a brief video to demonstrate so the rest of us can see what you are calling a flash?

I know that with situations like this, we all begin to consider crazy things going on. For example, disconnecting and trying a different monitor. On the surface that sounds odd to me that it would change anything, because Camtasia simply records what it "sees" from the aspect of what's in your display memory. No hardware is actually involved other than the computer memory. So in my own mind, there should be no difference in how it's connected (VGA VS HDMI VS USB etc.).

Then again, I do suppose that this could change a bit based on the hardware you have connected. Hopefully one of the more "hardware" type folks such as Ed Covney or TechSmith themselves can answer better on that.

So earlier I suggested trying using PPT itself to produce the video. Have you tried that? If not, I'd definitely suggest giving it a try.

Lastly, (and apologies, as I'm unsure if this has been mentioned before. I did scan the thread but may have missed it) does this "flashing" only show up when you are editing the recorded video or is it present after you render it into the final format?

Cheers... Rick :)
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Jim O

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Rick, honestly, no, I have only attempted to record PPT. I will try Notepad later tonight or over the weekend.

But what totally puzzles me is that none of this happens while I'm at the office, only when I am in my home office and the setup is the same...same laptop, same docking station, same files, only difference is the monitor's connection (display port @ office, VGA/HDMI @ home), but even not using the extra monitor and just recording the laptop's screen has this issue when I'm at home. It makes no sense.

See attached videos named according to monitor connection (VGA/HDMI/LaptopMonitor)
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Rick Stone

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Hmmm, I watched that first video and slowed playback on YouTube. What happens during the flash is that this frame is briefly shown:



While I can't explain why it happens at home and not at work (assuming it's the same machine here, you just undocked it and brought it home) I'm wondering if perhaps the flash would go away if you altered or removed the transition?
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Jim O

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Good point. I surely can get rid of the fancy transitions and see what happens.
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dmey503

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Did you see my post about the docking station? The last Microsoft Windows 10 update (version 1903) has a lot of bugs related to display link drivers for docking stations. I have the same issue. It can't seem to prioritize multiple displays.

I wonder if you're experiencing this as well? Microsoft is supposedly putting out a new build that will address this issue. I hope it does because I'm having all sorts of issues.

Keep an eye out for the latest Windows 10 build. 
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Jim O

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@dmey503, Yes, I saw your post, thx. I read up on such but as I stated, this isn't happening when on the docking station at the office, it was happening when at home, NOT on a docking station. I tested it last night by putting it on the docking station at home and it still has the issue. The only change in the appearance of the issue was connecting the external monitor with a VGA connector as opposed to the HDMI. At the office the monitors are connected by Display port connectors (I'm bringing one of those home with me tonight to test again)
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Rick Stone

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I was looking at some things on teh interwebz and found the link below. Wondering if it might help in your case?

https://answers.microsoft.com/en-us/msoffice/forum/all/powerpoint-slide-always-blinks-between-transition/8e82de1c-ba12-41c4-8e45-6656401f2c9d
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Jim O

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***update*** Sorry for the long delay in getting back to this, busy season and all here. Anyways, been talking back and forth with Jason L @ Techsmith and we tried a few things. I was wondering if recording the PowerPoint at the same time as doing the voice over was causing the issue. So I recorded just the PPT presentation and boom...the flashing was back.

So Jason's suggestion was to dig down into the registry and remove a subfolder for Camtasia. I did such and re-recorded the same PPT presentation and Woo Hoo!!! No more flashing in the video!!!!

I have to assume something in that folder went corrupt and deleting it, thus forcing Camtasia to recreate it, cleared whatever it was.

Thanks Jason L.

I can now get back to training the masses.
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Rick Stone

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Glad you managed to get it sorted!