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hediet / slideo

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@hediet
hediet Updates opencv to 4.5.2.
Latest commit f028040 Apr 14, 2021 History
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Slideo: Synchronize Slides With Video Installation Windows
Requirements Linux, Mac Requirements Usage Synchronize a Set of PDFs
With a Set of Videos View a Synchronized PDF TODO Other Stuff You
Might Like Browser Extension: Improved GitHub Issue Editor Draw.io
for VS Code and IntelliJ Debug Visualizer for VS Code
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 Slideo: Synchronize Slides With Video

[6874747073] [6874747073] [6874747073]

This tool matches video frames against PDF pages by using computer
vision. It also ships a web app in which you can click on a PDF page
to play the video from the first frame showing the page. Its primary
use-case is to quickly play a recorded lecture from a given slide.

Works best if the PDF page in the video is captured through screen
recording and video is 1080p, but it might work in other scenarios
too (rotation, shifting, scaling, obstruction and additional
on-screen content is supported).

See Background for how the matching algorithm works.

This is tool is more a proof of concept rather than a polished
product. Please reach out if you want to make a nice open source
product out of it.

[demo]

 Installation

See Releases. An installer is not yet provided. Feel free to
contribute!

 Windows Requirements

  * Microsoft Visual C++ Redistributable fur Visual Studio 2019

 Linux, Mac Requirements

(untested)

  * OpenCV 4.5.2
  * Poppler

 Usage

 Synchronize a Set of PDFs With a Set of Videos

Any given lecture slide can appear in any given video. For
performance and accuracy, keep the amount of pdf files small and
prefer seperate invocations. Synchronizing an entire lecture (<1000
slides) should work well though.

slideo lecture1.pdf lecture2.pdf video1.mp4 video2.mp4

When you know that video1 does not contain any slides of lecture2,
you can do this to improve accuracy:

slideo lecture1.pdf video1.mp4 --non-interactive && slideo lecture2.pdf video2.mp4 --non-interactive

 View a Synchronized PDF

slideo lecture1.pdf

This will spawn a webserver on port 63944 and print an url that you
can open in your favorite browser to open the viewer.

You can drag&drop any processed PDF into the viewer!

 TODO

  * Use wry to build a proper web GUI.
  * Use rustcv to get rid of the OpenCV dependency.

 Other Stuff You Might Like

  *  Browser Extension: Improved GitHub Issue Editor

  *  Draw.io for VS Code and IntelliJ

  *  Debug Visualizer for VS Code

A big Thank You to all my sponsors on GitHub!

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