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Simple Python Gstreamer Overlay Plugin. Overlay implemented with OpenCV, PyCairo

How to run

git clone
cd gst-overlay

python3 -f car.mpg -i cat/ --cairo
python3 -f car.mpg -i cat/ --opencv
python3 -f car.mpg -i cat/ --cairo --fps


  • -f, --file - video file's absolute path
  • -i, --images - existing folder with images to be draw on video
  • --cairo - use Cairo drawing call
  • --opencv - use OpenCV drawing call
  • --fps - draw FPS on video

Test car (video) and kitten (.png animation) from blog post download from here