Le samedi 18 janvier 2020 à 06:29 -0600, jeyp4 a écrit :
> Is there any way to set exposure time for v4l2src USB camera?
Note that there is slight variation between cameras, so first step is to list
the controls that are available with your model. The simpliest way is to use
v4l2-ctl utility, GStreamer does not offer any way to list the controls at the
So to list my controls here, I do the following (my camera is /dev/video0, don't
forget to adapt).
So on my model, it means I need to set exposure_auto=1 (manual), and then I can
control the exposure with "exposure_absolute". It's not clear if we can convert
these values to time, I would need to observe the effect on framereate. So two
ways to change the controls. If you want to do that using GStreamer, you need to
use the extra-controls property. Here's an example: