UCD Library Media Utils

This is a collection of scripts and utilities for working with media files in the UCD Library. Currently the following applications are bundled:

• tesseract: OCR (Optical Character Recognition) for PDFs/Images
  • CLI docs: https://tesseract-ocr.github.io/tessdoc/Command-Line-Usage.html
• ffmpeg: Video/Audio transcoding
  • CLI docs: https://ffmpeg.org/ffmpeg.html
• imagemagick: Image manipulation
  • Convert CLI docus: https://imagemagick.org/script/convert.php

Local Usage

Assuming you have a local pdf file named test.pdf in your current directory, you can run the following command to OCR the file:

docker run \
  -w /data \
  --rm \
  -v $(pwd):/data \
  gcr.io/ucdlib-pubreg/media-utils:latest \
  tesseract test.pdf test --dpi 300 -l eng --psm 1 --oem 3 hocr

Here is another example resizing an image:

docker run \
  -w data \
  --rm \
  -v $(pwd):/data \
  gcr.io/ucdlib-pubreg/media-utils:latest \
  convert test.png -resize 50% test_50.png

Examples

Checkout the dams-examples.md file for some examples of how this container is used with the DAMS.

Server

TODO