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A comment on Show HN: Slideo – Synchronize Slides with Video Using Computer Vision (OpenCV).

Re:Show HN: Slideo – Synchronize Slides with Video Using Com... by natemo on Monday April 19, 2021 @07:33AM (#26861542)
Great idea! I have watched some lectures/talks online with terrible camera work (e.g. panning to the speaker when they are asking the audience to read the slide).

Another solution I've seen was to play a simultaneous video feed of the slides only. Not particularly efficient. Would love to see something like this instead for instructional content!

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Re:Show HN: Slideo – Synchronize Slides with Video Using Com... by Gehinnn on Monday April 19, 2021 @10:24AM (#26863059)
Still, you don't have the reverse mapping. Given a slide, how do you find the commentary?

The primary goal of this tool is to find the reverse mapping and to provide a simple tool to play the video from a given slide. This is very useful for going back to or skipping slides.

If the slide is not visible at all in the video, such mapping cannot be computed automatically.

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