not capturing video while in flight

[ambikaverma]

Hi

I used the following command to start a video recording before takeoff -
sudo gst-launch-1.0 -e v4l2src device=/dev/video13 num-buffers=2000 ! autovideoconvert format=i420 width=1920 height=1080 framerate=30/1 ! vaapih264enc rate-control=cbr tune=high-compression ! qtmux ! filesink location=encoded_video.mp4
ffmpeg -i encoded_video.mp4

above command in mentioned in camera and video wiki.

The recording works fine if the UAV is not flying, but in flight video is recorded but all I get are green frames.
Any way to find out what is the cause for this and possible fix?
would it be better to capture individual images in a loop?

[ambikaverma]

Another issue that I'm facing -

the same command worked fine earlier, but now I get this error.
got this error after trying to run cpp-capture as discussed here #371 (which itself also failed).

and in QGC I can only see data from rsdepth stream. Nothing from video13, rsir and rsir2 streams.

Did running cpp-capture change any settings (even though it failed)?