I am using the following command to receive "frame event" in my C++ code and from GStreamer:
gst-launch-1.0.exe -vv udpsrc port=5000 ! application/x-rtp,media=video,clock-rate=90000,encoding-name=H264,payload=96 ! rtph264depay ! decodebin ! videoconvert ! video/x-raw,format=BGR ! videoconvert ! appsink name=sink
And it works fine.
Now I am trying to add a recording using tee. I tried:
gst-launch-1.0.exe -vv udpsrc port=5000 ! tee name=t t. ! application/x-rtp,media=video,clock-rate=90000,encoding-name=H264,payload=96 ! queue ! rtph264depay ! decodebin ! videoconvert ! appsink ! t. ! application/x-rtp,media=video,clock-rate=90000,encoding-name=H264,payload=96 ! queue ! rtph264depay ! h264parse ! mp4mux ! filesink location=test.mp4
for example, but I get this error:
WARNING: erroneous pipeline: syntax error
I don't get how to use the tee. Each part works fine alone, but when I am using the tee it doesn't work.
What is the correct syntax?
(In my code, instead of using gstlaunch-1.0.exe, I am using gst_parse_launch.)
In your pipe there is a ! between appsink and t (tee) elements. This connects the them. You want the branches to be separate.
gst-launch-1.0.exe -vv udpsrc port=5000 ! tee name=t t. ! application/x-rtp,media=video,clock-rate=90000,encoding-name=H264,payload=96 ! queue ! rtph264depay ! decodebin ! videoconvert ! appsink t. ! application/x-rtp,media=video,clock-rate=90000,encoding-name=H264,payload=96 ! queue ! rtph264depay ! h264parse ! mp4mux ! filesink location=test.mp4
A small note: Adding caps before tee would be more practical, so that you wouldn't need to write it twice.
gst-launch-1.0 -vv udpsrc port=5000 ! application/x-rtp,media=video,clock-rate=90000,encoding-name=H264,payload=96 ! tee name=t t. ! queue ! rtph264depay ! decodebin ! videoconvert ! appsink t. ! queue ! rtph264depay ! h264parse ! mp4mux ! filesink location=test.mp4