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I’m trying to create some video previews. The software that is mentioned in the below article (I’m using Thumnail Me) can make the previews, but I don’t see how these programs edit the .vtt file to add the image name and location of the screen capture.
https://foliovision.com/player/features/accessibility/timeline-previews
Can you help me understand how I link the thumbnail image that is created to a .vtt file that I have?