If The video content is included ppt, then this tool can extract the ppt from the video and export a pdf file. Or you can just transform video to pdf -,-.
# install from pypi
pip install extract-video-ppt
# or local
python ./setup.py install
# or local user
python ./setup.py install --user# help info
evp --help
# example
evp --similarity 0.6 --pdfname hello.pdf ./ ./test.mp4
# similarity: The similarity between this frame and the previous frame is less than this value and this frame will be saveed, default: 0.6
# pdfname: the name for export pdf evp --similarity 0.6 --pdfname hello.pdf ./demo ./demo/demo.mp4