Possible to add scrolling text across the page/video-camera-screen? Options

[chrisj]

On an html page, it uses this code:

CODE

accept="video/*"

in this context:

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<input type="file" name="fileToUpload" id="fileToUpload" accept="video/*" capture="user" onchange="submitForm();">

and when you view the page via mobile, and tap the page, your video camera screen appears. I'm looking to see if it's possible to add scrolling text across the page/video-camera-screen ? like some type of overlay? I would image it may be possible on an html page that displays a web cam, with sometyhing like this:

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<video autoplay="true" id="videoElement"></video>

I look forward to any comments/suggestions/guidance.