Thank you for your help; I have reviewed those videos and I believe I’m on the same page. Here is what I get from the diagnostic commands you provided:
I can see the Theta with lsusb
ali@ali-nano:~/Documents/Dev/libuvc-theta-sample/gst$ lsusb
Bus 002 Device 002: ID 0bda:0411 Realtek Semiconductor Corp.
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 015: ID 05ca:2712 Ricoh Co., Ltd
Bus 001 Device 002: ID 0bda:5411 Realtek Semiconductor Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Running ./gst_viewer works; I can see my video stream from the theta.
I also see /dev/v4l2loopback and /dev/video0:
ali@ali-nano:~/Documents/Dev$ ls /dev/v*
/dev/v4l2loopback /dev/vcs1 /dev/vcs3 /dev/vcs5 /dev/vcsa /dev/vcsa2 /dev/vcsa4 /dev/vcsa6 /dev/video0
/dev/vcs /dev/vcs2 /dev/vcs4 /dev/vcs6 /dev/vcsa1 /dev/vcsa3 /dev/vcsa5 /dev/vhci
Did you try manually inserting the module?
I did, but I get an error below:
ali@ali-nano:~/Documents/Dev/libuvc-theta-sample/gst$ ls
gst_loopback gst_viewer gst_viewer.c gst_viewer.o Makefile thetauvc.c thetauvc.h thetauvc.o
ali@ali-nano:~/Documents/Dev/libuvc-theta-sample/gst$ sudo modprobe v4l2loopback
ali@ali-nano:~/Documents/Dev/libuvc-theta-sample/gst$ ./gst_loopback
start, hit any key to stop
Error: Cannot identify device '/dev/video1'.
stop
I read that the sample assumes I have another camera; I do not; I expect the Theta to show up on /dev/video0.
when you run
lsmod, can you see the vl42loopback module?
Yes I can:
ali@ali-nano:~/Documents/Dev/libuvc-theta-sample/gst$ lsmod
Module Size Used by
uvcvideo 90357 0
v4l2loopback 42895 0
fuse 103841 3
bnep 16562 2
xt_conntrack 3609 1
ipt_MASQUERADE 2346 1
nf_nat_masquerade_ipv4 3111 1 ipt_MASQUERADE
nf_conntrack_netlink 28859 0
nfnetlink 7959 2 nf_conntrack_netlink
xt_addrtype 3670 2
iptable_filter 2481 1
iptable_nat 2882 1
nf_conntrack_ipv4 11992 2
nf_defrag_ipv4 1836 1 nf_conntrack_ipv4
nf_nat_ipv4 6712 1 iptable_nat
nf_nat 20406 2 nf_nat_masquerade_ipv4,nf_nat_ipv4
nf_conntrack 105820 6 nf_conntrack_ipv4,nf_conntrack_netlink,nf_nat_masquerade_ipv4,xt_conntrack,nf_nat_ipv4,nf_nat
br_netfilter 16250 0
zram 26166 4
overlay 48691 0
hid_logitech_hidpp 22721 0
hid_logitech_dj 13813 0
spidev 13282 0
userspace_alert 5665 0
nvgpu 1580772 32
bluedroid_pm 13912 0
ip_tables 19441 2 iptable_filter,iptable_nat
x_tables 28951 5 ip_tables,iptable_filter,ipt_MASQUERADE,xt_addrtype,xt_conntrack
Can you see the device with
v4l2-ctl?
This is what I get; does not look like your output.
ali@ali-nano:~/Documents/Dev/libuvc-theta-sample/gst$ v4l2-ctl --list-formats-ext --device /dev/video0
ioctl: VIDIOC_ENUM_FMT
try this pipeline as a test.
This pipeline does not work for me; gst-launch quits:
ali@ali-nano:~/Documents/Dev/libuvc-theta-sample/gst$ gst-launch-1.0 v4l2src device=/dev/video0 ! video/x-raw,framerate=30/1 ! xvimagesink
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal data stream error.
Additional debug info:
gstbasesrc.c(3055): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
streaming stopped, reason not-negotiated (-4)
ERROR: pipeline doesn't want to preroll.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...
I also tried a different USB webcam and confirmed that I can capture it in OSB, or via gstreamer.
What do you think?
Regards,
Ali