EDUCATIONAL VIDEO - Writing speed lags with audio and pen

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  • Updated 1 year ago
I am having trouble with my "ink writing" keeping up with my pen and audio. PLEASE - check out my educational video to view my problem. You really start seeing problems after 16 minutes goes by. By the middle of the video, they are completely out of sync

Link:

https://www.youtube.com/watch?v=nCB7r3zfe-0
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NYS Math Regents Preparation

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Posted 1 year ago

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Jack Fruh, Champion

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It seemed ok to me at 16, and 45 minutes.

Somewhere later in the video, you paused it, at that point the mouse action of pausing pretty much lined up with what you were saying but the video of your face seemed ever so slightly off.

But as far as 16 and 45 minutes in, lip sync with your face was perfect and what you were doing on screen seemed to follow what you were saying.

Maybe try it from another PC, or another device (ipad?) and see if the problems happen there as well?
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NYS Math Regents Preparation

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I don't see what you are saying. I tried to view on three different devices, and the all have the same result.


If you look carefully, the pen is moving much faster than the "ink" or "pen-markings". It appears that the ink markings are lagging. The pen speed and sound are in sync, but not think ink markings.
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Jack Fruh, Champion

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Sorry, still not seeing it, plus your pen tool is not a feature of camtasia, so if there is lag between the cursor and what is drawn on screen, wouldn't that lag also be present in real time, like if you were projecting to a class?
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davemillman

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If you watch the end of the video (around 1:30:00 and later), the lag between the pencil motion and the scribbles onscreen is >1second. I'm not sure how to debug this since multiple applications are interacting with the screen at once. If it were me and I needed a quick and dirty work-around, I would record classes in 15 minute chunks. You could reassemble these easily, and the problem would likely be gone. All the instructional experts recommend splitting long epic videos into short chapters anyhow.