I have a gstreamer pipeline which works perfectly and takes a camera stream, encodes it as H.264 video, saves it to a file AND displays it on the screen as follows:
gst-launch-1.0 -v autovideosrc ! tee name = t ! queue ! omxh264enc !
'video/x-h264, stream-format=(string)byte-stream' ! h264parse ! qtmux !
filesink location=test.mp4 t. ! queue ! videoscale ! video/x-raw,
width=480,height=270 ! xvimagesink -e sync=false
Now, I am trying to do something even simple and just record the stream to a file (without displaying on screen) and this does not seem to work! It writes a file but cannot play it. What I have tried so far is:
gst-launch-1.0 -v autovideosrc ! queue ! omxh264enc ! 'video/x-h264,
stream-format=(string)byte-stream' ! h264parse ! qtmux ! filesink
location=test.mp4 sync=false
I can also remove the queue element but with the same result:
gst-launch-1.0 -v autovideosrc ! omxh264enc ! 'video/x-h264,
stream-format=(string)byte-stream' ! h264parse ! qtmux ! filesink
location=test.mp4 sync=false
It does not give any errors but just does not write a valid stream to my filesink, it seems.
How do you stop the stream? Will the camera correctly inject an EOS signal? If not and you just press ctrl-c to stop the operation the .mp4 file will missing important headers which are required for proper playback.
Add -e to your command line. In that case when you press ctrl-c the pipeline will not just stop but is being properly shut down by sending an EOS signal through the pipeline.