ROCK 5A + Radxa 4k Camera Video Capture

#1

Hello!
I’m using ROCK 5A with Radxa 4k camera, video preview looks great using the following gst-launch-1.0 command:
gst-launch-1.0 v4l2src device=/dev/video11 io-mode=4 ! videoconvert ! video/x-raw,format=NV12,width=1920,height=1080 ! xvimagesink

The issue is when I’m trying to capture video and save it as .mp4 file - Video comes out glitchy and cut off, the command I used is:
gst-launch-1.0 v4l2src num-buffers=512 device=/dev/video11 io-mode=4 ! videoconvert ! video/x-raw, format=NV12, width=1920, height=1080, framerate=30/1 ! tee name=t ! queue ! mpph264enc ! queue ! h264parse ! mpegtsmux ! filesink location=/home/radxa/file.name.mp4

To me it looks like an encoding issue, I would love if someone can point me to the right direction regarding video encoding for v4l2 devices.

#2

Got it figured out for anyone who encountered the same issue:
I was using ROCK 5A (Kernel 6.1): Radxa ROCK 5A Debian12 b3 instead of ROCK 5A (Kernel 5.10): Radxa ROCK 5A Debian11 b18

looks like the new kernel doesn’t fully support the Radxa 4k Camera just yet - which causes issue when queuing the different encoding methods used when capturing video into mp4 format.
Also, when using the new kernel and updating+upgrading the system using apt - the captured stream turns very dark - which is an issue that comes up with this v4l2 camera.

1 Like
#3

Shooting video with the ROCK 5A + Radxa 4K camera is really good, but if you want sharpness, use Wink.

#4

same experience. also got a lot of CRC errors on 6.1 + update. the camera pretty much stopped working.

edit: the “dark” part is the auto exposure not doing it’s job (rkaiq server). even though the service is up and running.

I’m currently on the CM5 lite on the cm5 io board and I’m going through the same stuff. Gstreamer crashes after 30 seconds, the video is horrible etc.
And I can’t find any 5.10 kernel image for my board.