Finding_TS is a proof of concept and is far from perfect. It uses OpenCV (cv2) to get the average light in a frame. It is slow and It times triggers in low light scenes. Even with its flaws, it's nice to not watch every episode just for Chapter Timestamps.
Use the package manager pip to install opencv-python.
pip install opencv-python
from flagging_TS import get_dark_frames
# If you want to turn it into a chapter file;
# I have a list() to chapter file (make_txt & make_xml) functions in
# ChapterCleaner script.
chapter_ts_list = get_dark_frames(input_video_file)
print(chapter_ts_list)I am open to improvements. For changes please open an issue to discuss what you would like to change.