Interface usb Webcam Linux

Technical Support
, , ,
1

Connected Logitech usb Webcam and the module detected it.
root@apalis-imx6:~# [ 7298.117012] usb 1-1.2: new high-speed USB device number 6 using ci_hdrc
[ 7298.750274] uvcvideo: Found UVC 1.00 device HD Webcam C615 (046d:082c)
[ 7298.771576] input: HD Webcam C615 as /devices/soc0/soc/2100000.aips-bus/2184200.usb/ci_hdrc.1/usb1/1-1/1-1.2/1-1.2:1.2/input/input3

How to stream live video using gstreamer?

2

Dear @sharonroyal,

Thank you for contacting the Toradex community!

Which Linux image release you are using?

If you are using v2.8 or prior then Could you go through this documentation?

3

Already gone through those documentation and used the following command,

gst-launch-1.0 v4l2src device=/dev/video0 ! 'video/x-raw,width=640,height=480,framerate=30/1' ! videoconvert ! ximagesink

But the result is as below

root@apalis-imx6:~# gst-launch-1.0 v4l2src device=/dev/video0 ! 'video/x-raw,width=640,height=480,framerate=30/1' ! videoconvert ! ximagesink
[13881.116606] usb 1-1.2: reset high-speed USB device number 6 using ci_hdrc
[13881.688679] ERROR: v4l2 capture: slave not found! V4L2_CID_HUE
[13881.695291] ERROR: v4l2 capture: slave not found! V4L2_CID_HUE
[13881.703009] ERROR: v4l2 capture: slave not found! V4L2_CID_HUE
[13881.899831] ERROR: v4l2 capture: slave not found! V4L2_CID_HUE
[13881.905986] ERROR: v4l2 capture: slave not found! V4L2_CID_HUE
[13881.912184] ERROR: v4l2 capture: slave not found! V4L2_CID_HUE
Setting pipeline to PAUSED ...
[13881.955535] ERROR: v4l2 capture: slave not found! V4L2_CID_HUE
ERROR: Pipeline doesn't want to pause.
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Could not open device '/dev/video0' for reading and writing.
Additional debug info:
../../../git/sys/v4l2/v4l2_calls.c(668): gst_v4l2_open (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
system error: Resource temporarily unavailable
Setting pipeline to NULL ...
Freeing pipeline ...
4

What exact hardware (module and carrier board) and software versions of things are you talking about?

5

Module Apalis IMX6Q V1.1A
Carrier Board Apalis Evaluation Board V1.1A
Toradex Version 2.8
Distribution Ångström v2017.12
OpenEmbedded/Yocto Codename rocko
Yocto Project Release 2.4

6

Dear @sharonroyal.

I used this version of Linux image

root@apalis-imx6:~# uname -a Linux
apalis-imx6 4.9.166-dirty #8 SMP Tue
Dec 24 18:24:42 IST 2019 armv7l
GNU/Linux

with

opkg update
opkg install gstreamer1.0-plugins-base-ximagesink
gstreamer1.0-plugins-good-video4linux2
gstreamer1.0-plugins-base-videoconvert
gstreamer1.0-plugins-bad-fbdevsink

USB UVC camera video is running, I didn’t face the same issue. Did you do reboot and try once again.

Verify following packages installed on the module with this command :

opkg list-installed

gstreamer1.0-plugins-bad-fbdevsink - 1.12.2-r0.0
gstreamer1.0-plugins-base-meta - 1.12.2-r0.0
gstreamer1.0-plugins-base-videoconvert - 1.12.2-r0.0
gstreamer1.0-plugins-base-ximagesink - 1.12.2-r0.0
gstreamer1.0-plugins-good-meta - 1.12.2-r0.0
gstreamer1.0-plugins-good-video4linux2 - 1.12.2-r0.0

Verify video format available from the UVC camera by using the following command

v4l2-ctl --list-formats-ext

Please let us know if it is not helping with the uname -a output.