gklyne/opencv-video-data-extraction

Experiments with using OpenCV with Python to read data from a video recording

opencv-video-data-extraction

Experiments with using OpenCV with Python to read data from a video recording

Setup

• installed xcode (can skip this?)

• installed command line tools (xcode-select --install)

• installed python-3.9 (from .pkg file at https://www.python.org/ftp/python/3.9.7/python-3.9.7-macosx10.9.pkg)

Then:

$(which python3.9) -m venv cvenv
. cvenv/bin/activate

pip install --upgrade pip
pip install numpy
pip install opencv-python

Run the video extraction

python video-04-region-coords.py --input=20210914-monotype-tape-reader.mov

Video output

App creates output.avi. Approx 100Kb/frame.

Conversion to .m4v reduces size: use Final Cut pro; import media -> share -> export file.