Скачать или смотреть Using video2ocr / Tesseract-OCR to extract text from video

Video video demonstrates how to use the Tsurugi Linux video2ocr script to extract text from video. video2ocr uses ffmpeg to create screenshots of a target video file, then converts the screenshots to greyscale and uses Tesseract-OCR to extract text from the resulting images. Digital investigations often benefit from optical character recognition (OCR) of images, PDFs and video. video2orc is a useful tool as long as you understand its limitations.

00:00 Introduction to Video2OCR
00:13 Video2OCR in Tsurugi Linux
00:29 Video2OCR and Tesseract OCR
00:43 Video2OCR help menu
01:34 Video2OCR target videos folder
01:59 Set up for video processing
02:31 Example video explanation
03:41 Running Video2OCR
03:51 Check which languages tesseract OCR supports
04:09 Specify frames per second
04:57 Monitor Video2OCR progress
05:25 The Video2ORC process
06:27 OCR analysis results
11:21 Lessons learned from Vide2OCR
12:25 Conclusions

We demonstrate how use video2ocr, and show some of it's strenghts and weaknesses. A simple powerpoint video is used as a case study.

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Links:
https://tsurugi-linux.org/ (video2ocr)
Tesseract OCR : https://github.com/tesseract-ocr

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