Thanks to this topic, I was able to run gst_viewer on my Ubuntu laptop and view streaming video of THETA V.
Now,I have a question about THETA video streaming over USB.
This may seem like an odd question, but I would like to ask someone to give me an advice if possible.
I’m trying to view streaming video on ffplay with gst_loopback,v4l2loopback and ffmpeg as well as gst_viewer.
You might think "Why is this guy trying to use ffplay even though gst_viewer is available?”. I know, but it’ll be a long story.So I’ll skip it now.
Anyway, I connected THETA and ran gst_loopback and ran the following command.
("/dev/video1" is a device file created by v4l2loopback.)
ffmpeg -i /dev/video1 -f matroska - | ffplay -
However, as shown in the screenshot, bit rate indicates N/A and no streaming image was displayed.
I changed /dev/video1 to /dev/video0 (the web-camera built into the laptop) and ran the same command and confirmed that the video from the web-camera was correctly displayed.
To further confirm, I ran the following command and saved a 10 second video.
ffmpeg -i /dev/video1 -f matroska output.mp4
The length of the output.mp4 was 0 seconds and only one image was stored.
gst_viewer is working fine, so I think I’m missing some settings or making a mistake on the v4l2loopback, ffmpeg side, but I couldn’t find a good solution.
Does anyone have an advice on this?
OS:Ubuntu 18.04 LTS 64bit