git clone https://github.com/jackersson/gst-python-plugins.git
cd gst-python-plugins
python3 -m venv venv
source venv/bin/activate
pip install -U wheel pip setuptools
pip install -r requirements.txt
export GST_PLUGIN_PATH=$GST_PLUGIN_PATH:$PWD/venv/lib/gstreamer-1.0/:$PWD/gst/
# from fake video
GST_DEBUG=python:6 gst-launch-1.0 videotestsrc ! gstplugin_py int-prop=100 float-prop=0.2 bool-prop=True str-prop="set" ! fakesink
# from fake video
gst-launch-1.0 videotestsrc ! gaussian_blur kernel=9 sigmaX=5.0 sigmaY=5.0 ! videoconvert ! autovideosink
# from file
gst-launch-1.0 filesrc location=video.mp4 ! decodebin ! videoconvert ! \
gaussian_blur kernel=9 sigmaX = 5.0 sigmaY=5.0 ! videoconvert ! autovideosink
On/Off gaussian_blur plugin example:
gst-launch-1.0 videomixer name=mixer ! videoconvert ! autovideosink videotestsrc ! \
video/x-raw,format=RGBA,width=1280,height=720 ! gaussian_blur kernel=9 sigmaX = 5.0 sigmaY=5.0 ! \
videobox left=-1280 ! mixer. videotestsrc ! video/x-raw,format=RGBA,width=1280,height=720 ! videobox left=0 ! mixer.
gst-launch-1.0 videotestsrc ! videoconvert ! gstvideocrop left=10 top=20 bottom=10 right=20 ! videoconvert ! xvimagesink