PowerPoint 2016 exported mp4 video "jerks" on some slide transitions

Anonymous
2020-04-15T05:43:13+00:00

I am using PowerPoint 2016 - Windows 7. When I export to an mp4 video, I notice that at some slide transitions the video "jerks" (quickly flashes back and forth from previous slide). I am at a total loss as to why. I'm hoping this is something I am doing wrong and someone can help figure out how to prevent this from happening.

https://www.youtube.com/watch?v=d2IYaXmGHRc - video file exported from ppt and imported into youtube

Link to youtube video showing behavior

where it jerks: 55 seconds, 1:45, and 2:36

The same behavior occurs in original mp4 file exported from ppt. If you download the mp4 file and run in Windows Media Player you will see the glitches at the time points. For some reason, when I just run the mp4 in a browser, the jerks do not show up, I guess are "smoothed over" by whatever video player the browser is using.

https://www.ehdp.com/out/ppt\_light\_bg\_alternatives\_\_\_\_\_\_\_.mp4 - video exported from ppt

Link to mp4 file showing behavior

You will notice there is kind of a pattern. Approximately 50 seconds between the glitches. I have noticed a more or less similar pattern, approximately one minute between the glitches, in some other tests I have done.

https://www.ehdp.com/out/ppt\_light\_bg\_alternatives\_\_\_\_\_\_\_.pptx - the powerpoint file

PowerPoint File 

I also see this happen when I remove the slide timings and set the mp4 video export to advance slides every 5 seconds. In that case, the jerks happen exactly at 1 minute and 2 minutes.

The transition "jerk" never happens when I run a slideshow from within PPT. Only happens in exported mp4 video.

Slide transitions set to "none".

Any help appreciated. Please let me know if additional information needed.

If a bug in ppt, any suggested workaround?

Daniel

Microsoft 365 and Office | PowerPoint | For home | Windows

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Anonymous
2020-12-02T19:01:27+00:00

I too have this issue. The exported MP4 from O365 PP 2016 is experiencing the same "glitch" on transitions. After the transition completes, the previous slide pops up, sometimes the entire slide, sometimes only parts of it.

I've been using PP for this purpose for many years and never had this issue, even with Win 10 x64 and O365 2016 until recently. I'm suspecting it has something to do with one or more of the updates pushed out by Microsoft. (remember the debacle where the Win 10 update 1809 would delete your user profiles if you didn't store them in a "traditional" location?)

Anyway, in October this was working fine for me (we are a corporate entity that updates much slower than public users).

I've had to resort to two rounds of encoding making the process more lengthy.

Length of video is irrelevant unless of course it's shorter than the 55 seconds (yes mine also initially happens at 55 seconds go figure)

I am a software engineer and I can tell you that this is most definitely an encoding problem. It is NOT a player problem ... I suspect that the encoding is screwed up and some players more readily ignore them. But what do I know, I only design and write software for a living.

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  1. Anonymous
    2020-08-20T08:39:08+00:00

    I am having the same problem.  I noticed that I could eliminate the flicker by re-exporting the mp4 using CyberLink Director.  I simply took the mp4 produced by PPT, imported it into CD, and then exported it as a new mp4.

    This is additional evidence that the output from PPT is flawed.

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  2. Anonymous
    2020-05-12T09:07:42+00:00

    Right, thank you for the corrections.

    There are probably several methods PowerPoint can encode videos, and similarly several methods that players can use for playback (keeping in mind the hundreds of software-hardware combinations). Since, for myself, there was only one player that was depicting the issue (playback on YouTube worked fine too), I thought it was probably due to some bug in the way that player had decided to play that particular encoding type. If other users are seeing the jerks in other players too, then almost definitely it is a PowerPoint bug.

    I was using Windows 10 v1903 with Office 365 Version 2004 (Build 12730.20250 Click-to-run), the same as Bart123-123's above.

    Since this issue has persisted for some years now and apparently most users don't face it, it doesn't look like Microsoft is very serious in fixing it. Maybe we should try the "Feedback" feature built inside Office, that might get more attention.

    Regards,

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  3. Anonymous
    2020-04-27T20:35:59+00:00

    You are welcome. I have replied to your private message.

    Bob

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  4. Anonymous
    2020-04-24T20:54:52+00:00

    Your point is noted. I have sent a private message, we want to request some personal details, for you to be assisted by a different customer ambassador. To view your private messages, click on your profile name, select My Profile, and then click on View private messages. 

    Bob

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