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    VOXL camera configuration

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    • K
      Kris @Chad Sweet
      last edited by Kris 31 Mar 2023, 00:28 31 Mar 2023, 00:13

      @Chad-Sweet
      My UVC camera is recognized on the VOXL but the voxl-uvc-server will not connect to it.

      voxl:~$ show-video-device-info.sh
      /dev/video2: e-CAM83_USB 2560:c184
      /dev/video3: e-CAM83_USB 2560:c184
      

      Here is the ls -la /dev/video* command output from my Linux PC.

      crw-rw----+ 1 root video 81, 0  3月 31 09:20 /dev/video0
      crw-rw----+ 1 root video 81, 1  3月 31 09:20 /dev/video1
      crw-rw----+ 1 root video 81, 2  3月 31 09:20 /dev/video2
      crw-rw----+ 1 root video 81, 3  3月 31 09:20 /dev/video3
      
      
      1 Reply Last reply Reply Quote 0
      • C
        Chad Sweet ModalAI Team
        last edited by 31 Mar 2023, 00:36

        This post is deleted!
        1 Reply Last reply Reply Quote 0
        • C
          Chad Sweet ModalAI Team
          last edited by 31 Mar 2023, 00:39

          voxl-uvc-server only supports a few data types. You may need to modify the code to support the format of the e-CAM83

          If you have a gstreamer command that works on your linux box, it should work on VOXL as well though.

          K 1 Reply Last reply 31 Mar 2023, 01:00 Reply Quote 0
          • K
            Kris @Chad Sweet
            last edited by 31 Mar 2023, 01:00

            @Chad-Sweet
            Thank you so much for looking into this for me.

            Can I ask for some assistance with modifying the voxl-uvc-server?

            Do I modify the voxl-uvc-server C file, then make it into an ipk and push it into the VOXL?

            1 Reply Last reply Reply Quote 0
            • C
              Chad Sweet ModalAI Team
              last edited by 31 Mar 2023, 01:06

              The instructions are in the readme here: https://gitlab.com/voxl-public/voxl-sdk/services/voxl-uvc-server

              C 1 Reply Last reply 31 Mar 2023, 01:07 Reply Quote 0
              • C
                Chad Sweet ModalAI Team @Chad Sweet
                last edited by 31 Mar 2023, 01:07

                @Chad-Sweet But yes, you modify the code, build it, and push the IPK to VOXL

                K 2 Replies Last reply 31 Mar 2023, 01:09 Reply Quote 0
                • K
                  Kris @Chad Sweet
                  last edited by 31 Mar 2023, 01:09

                  @Chad-Sweet
                  Is the Hires + TOF + Stereo (one stereo configured as the tracking camera) configuration possible?
                  In case the e-CAM83 will not work with the Seeker.

                  1 Reply Last reply Reply Quote 0
                  • K
                    Kris @Chad Sweet
                    last edited by Kris 31 Mar 2023, 01:35 31 Mar 2023, 01:21

                    @Chad-Sweet
                    Just to confirm,
                    If I modify the voxl-uvc-server/src/main.c file, to allow H264 format, would this work?
                    Or does the modification need to happen somewhere else in the main.c?
                    I’m just not exactly sure what or where I need to modify the voxl-uvc-server to make my UVC camera work.

                    E 1 Reply Last reply 31 Mar 2023, 14:59 Reply Quote 0
                    • E
                      Eric Katzfey ModalAI Team @Kris
                      last edited by 31 Mar 2023, 14:59

                      @Kris H264 is not supported in voxl-uvc-server. See https://gitlab.com/voxl-public/voxl-sdk/services/voxl-uvc-server/-/blob/dev/src/main.c#L64. You may be able to add support for it but there are some tricky aspects to H264 streaming that you would need to be aware of before attempting it. Seems like you should start with the video3 interface since it supports 640x480 YUYV

                      K 2 Replies Last reply 1 Apr 2023, 03:29 Reply Quote 0
                      • K
                        Kris @Eric Katzfey
                        last edited by 1 Apr 2023, 03:29

                        @Eric-Katzfey
                        Ok, thank you.
                        I will start with attempting /dev/video3 first.

                        1 Reply Last reply Reply Quote 0
                        • K
                          Kris @Eric Katzfey
                          last edited by Kris 4 Apr 2023, 01:31 4 Apr 2023, 01:21

                          @Eric-Katzfey
                          It seems as if VOXL1 is not able to connect with my UVC camera.
                          Output when UVC camera is connected to the Seeker;

                          voxl:~$ gst-device-monitor-1.0 Video/Source
                          Probing devices...
                          
                          
                          (gst-device-monitor-1.0:4152): GStreamer-CRITICAL **: gst_element_message_full_with_details: assertion 'GST_IS_ELEMENT (element)' failed
                          
                          (gst-device-monitor-1.0:4152): GStreamer-CRITICAL **: gst_element_message_full_with_details: assertion 'GST_IS_ELEMENT (element)' failed
                          
                          (gst-device-monitor-1.0:4152): GStreamer-CRITICAL **: gst_element_message_full_with_details: assertion 'GST_IS_ELEMENT (element)' failed
                          
                          (gst-device-monitor-1.0:4152): GStreamer-CRITICAL **: gst_element_message_full_with_details: assertion 'GST_IS_ELEMENT (element)' failed
                          
                          (gst-device-monitor-1.0:4152): GStreamer-CRITICAL **: gst_element_message_full_with_details: assertion 'GST_IS_ELEMENT (element)' failed
                          No devices found!
                          voxl:~$ gst-device-monitor-1.0             
                          Probing devices...
                          
                          
                          (gst-device-monitor-1.0:4157): GStreamer-CRITICAL **: gst_element_message_full_with_details: assertion 'GST_IS_ELEMENT (element)' failed
                          
                          (gst-device-monitor-1.0:4157): GStreamer-CRITICAL **: gst_element_message_full_with_details: assertion 'GST_IS_ELEMENT (element)' failed
                          
                          (gst-device-monitor-1.0:4157): GStreamer-CRITICAL **: gst_element_message_full_with_details: assertion 'GST_IS_ELEMENT (element)' failed
                          
                          (gst-device-monitor-1.0:4157): GStreamer-CRITICAL **: gst_element_message_full_with_details: assertion 'GST_IS_ELEMENT (element)' failed
                          
                          (gst-device-monitor-1.0:4157): GStreamer-CRITICAL **: gst_element_message_full_with_details: assertion 'GST_IS_ELEMENT (element)' failed
                          
                          Device found:
                          
                          	name  : msm_fd
                          	class : Video/Sink
                          	caps  : video/x-raw, format=(string)GRAY8, width=(int)[ 320, 854 ], height=(int)[ 240, 480 ], interlace-mode=(string)progressive, pixel-aspect-ratio=(fraction)1/1, colorimetry=(string){ bt601, smpte240m, bt709, 2:4:5:2, 2:4:5:3, 1:4:7:1, 2:4:7:1, 2:4:12:8, 2:6:5:7, 2:0:0:0 };
                          	properties:
                          		device.path = /dev/video1
                          		udev-probed = false
                          		device.api = v4l2
                          		v4l2.device.driver = msm_fd
                          		v4l2.device.card = msm_fd
                          		v4l2.device.bus_info = ""
                          		v4l2.device.version = 201287 (0x00031247)
                          		v4l2.device.capabilities = 69206018 (0x04200002)
                          		v4l2.device.device_caps = 2097152 (0x00200000)
                          

                          Output when my UVC camera is connected to my Linux PC;

                          seeker3@seeker3-VirtualBox:~$ gst-device-monitor-1.0 Video/Source
                          Probing devices...
                          
                          
                          Device found:
                          
                          	name  : e-CAM83_USB
                          	class : Video/Source
                          	caps  : video/x-h264, stream-format=(string)byte-stream, alignment=(string)au, width=(int)3840, height=(int)2160, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 15/1 };
                          	        video/x-h264, stream-format=(string)byte-stream, alignment=(string)au, width=(int)1920, height=(int)1080, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)30/1;
                          	properties:
                          		udev-probed = true
                          		device.bus_path = pci-0000:00:0c.0-usb-0:2:1.0
                          		sysfs.path = /sys/devices/pci0000:00/0000:00:0c.0/usb1/1-2/1-2:1.0/video4linux/video0
                          		device.bus = usb
                          		device.subsystem = video4linux
                          		device.vendor.id = 2560
                          		device.vendor.name = e-ConSystems
                          		device.product.id = c184
                          		device.product.name = e-CAM83_USB
                          		device.serial = e-ConSystems_e-CAM83_USB_00.00.01
                          		device.capabilities = :capture:
                          		device.api = v4l2
                          		device.path = /dev/video0
                          		v4l2.device.driver = uvcvideo
                          		v4l2.device.card = e-CAM83_USB
                          		v4l2.device.bus_info = usb-0000:00:0c.0-2
                          		v4l2.device.version = 328933 (0x000504e5)
                          		v4l2.device.capabilities = 2225078273 (0x84a00001)
                          		v4l2.device.device_caps = 69206017 (0x04200001)
                          	gst-launch-1.0 v4l2src ! ...
                          
                          
                          Device found:
                          
                          	name  : e-CAM83_USB
                          	class : Video/Source
                          	caps  : video/x-raw, format=(string)YUY2, width=(int)640, height=(int)480, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)15/1;
                          	        image/jpeg, width=(int)1920, height=(int)1080, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)30/1;
                          	properties:
                          		udev-probed = true
                          		device.bus_path = pci-0000:00:0c.0-usb-0:2:1.0
                          		sysfs.path = /sys/devices/pci0000:00/0000:00:0c.0/usb1/1-2/1-2:1.0/video4linux/video2
                          		device.bus = usb
                          		device.subsystem = video4linux
                          		device.vendor.id = 2560
                          		device.vendor.name = e-ConSystems
                          		device.product.id = c184
                          		device.product.name = e-CAM83_USB
                          		device.serial = e-ConSystems_e-CAM83_USB_00.00.01
                          		device.capabilities = :capture:
                          		device.api = v4l2
                          		device.path = /dev/video2
                          		v4l2.device.driver = uvcvideo
                          		v4l2.device.card = e-CAM83_USB
                          		v4l2.device.bus_info = usb-0000:00:0c.0-2
                          		v4l2.device.version = 328933 (0x000504e5)
                          		v4l2.device.capabilities = 2225078273 (0x84a00001)
                          		v4l2.device.device_caps = 69206017 (0x04200001)
                          	gst-launch-1.0 v4l2src device=/dev/video2 ! ...
                          
                          seeker3@seeker3-VirtualBox:~$ gst-device-monitor-1.0
                          Probing devices...
                          
                          
                          Device found:
                          
                          	name  : Monitor of Built-in Audio Analog Stereo
                          	class : Audio/Source
                          	caps  : audio/x-raw, format=(string){ S16LE, S16BE, F32LE, F32BE, S32LE, S32BE, S24LE, S24BE, S24_32LE, S24_32BE, U8 }, layout=(string)interleaved, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 32 ];
                          	        audio/x-alaw, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 32 ];
                          	        audio/x-mulaw, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 32 ];
                          	properties:
                          		device.description = "Monitor\ of\ Built-in\ Audio\ Analog\ Stereo"
                          		device.class = monitor
                          		alsa.card = 0
                          		alsa.card_name = "Intel\ 82801AA-ICH"
                          		alsa.long_card_name = "Intel\ 82801AA-ICH\ with\ AD1980\ at\ irq\ 21"
                          		alsa.driver_name = snd_intel8x0
                          		device.bus_path = pci-0000:00:05.0
                          		sysfs.path = /devices/pci0000:00/0000:00:05.0/sound/card0
                          		device.bus = pci
                          		device.vendor.id = 8086
                          		device.vendor.name = "Intel\ Corporation"
                          		device.product.id = 2415
                          		device.product.name = "82801AA\ AC\'97\ Audio\ Controller"
                          		device.form_factor = internal
                          		device.string = 0
                          		module-udev-detect.discovered = 1
                          		device.icon_name = audio-card-pci
                          	gst-launch-1.0 pulsesrc device=alsa_output.pci-0000_00_05.0.analog-stereo.monitor ! ...
                          
                          
                          Device found:
                          
                          	name  : Built-in Audio Analog Stereo
                          	class : Audio/Source
                          	caps  : audio/x-raw, format=(string){ S16LE, S16BE, F32LE, F32BE, S32LE, S32BE, S24LE, S24BE, S24_32LE, S24_32BE, U8 }, layout=(string)interleaved, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 32 ];
                          	        audio/x-alaw, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 32 ];
                          	        audio/x-mulaw, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 32 ];
                          	properties:
                          		alsa.resolution_bits = 16
                          		device.api = alsa
                          		device.class = sound
                          		alsa.class = generic
                          		alsa.subclass = generic-mix
                          		alsa.name = "Intel\ 82801AA-ICH"
                          		alsa.id = "Intel\ ICH"
                          		alsa.subdevice = 0
                          		alsa.subdevice_name = "subdevice\ \#0"
                          		alsa.device = 0
                          		alsa.card = 0
                          		alsa.card_name = "Intel\ 82801AA-ICH"
                          		alsa.long_card_name = "Intel\ 82801AA-ICH\ with\ AD1980\ at\ irq\ 21"
                          		alsa.driver_name = snd_intel8x0
                          		device.bus_path = pci-0000:00:05.0
                          		sysfs.path = /devices/pci0000:00/0000:00:05.0/sound/card0
                          		device.bus = pci
                          		device.vendor.id = 8086
                          		device.vendor.name = "Intel\ Corporation"
                          		device.product.id = 2415
                          		device.product.name = "82801AA\ AC\'97\ Audio\ Controller"
                          		device.form_factor = internal
                          		device.string = front:0
                          		device.buffering.buffer_size = 17632
                          		device.buffering.fragment_size = 4408
                          		device.access_mode = mmap
                          		device.profile.name = analog-stereo
                          		device.profile.description = "Analog\ Stereo"
                          		device.description = "Built-in\ Audio\ Analog\ Stereo"
                          		alsa.mixer_name = "Analog\ Devices\ AD1980"
                          		alsa.components = AC97a:41445370
                          		module-udev-detect.discovered = 1
                          		device.icon_name = audio-card-pci
                          	gst-launch-1.0 pulsesrc device=alsa_input.pci-0000_00_05.0.analog-stereo ! ...
                          
                          
                          Device found:
                          
                          	name  : Built-in Audio Analog Stereo
                          	class : Audio/Sink
                          	caps  : audio/x-raw, format=(string){ S16LE, S16BE, F32LE, F32BE, S32LE, S32BE, S24LE, S24BE, S24_32LE, S24_32BE, U8 }, layout=(string)interleaved, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 32 ];
                          	        audio/x-alaw, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 32 ];
                          	        audio/x-mulaw, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 32 ];
                          	properties:
                          		alsa.resolution_bits = 16
                          		device.api = alsa
                          		device.class = sound
                          		alsa.class = generic
                          		alsa.subclass = generic-mix
                          		alsa.name = "Intel\ 82801AA-ICH"
                          		alsa.id = "Intel\ ICH"
                          		alsa.subdevice = 0
                          		alsa.subdevice_name = "subdevice\ \#0"
                          		alsa.device = 0
                          		alsa.card = 0
                          		alsa.card_name = "Intel\ 82801AA-ICH"
                          		alsa.long_card_name = "Intel\ 82801AA-ICH\ with\ AD1980\ at\ irq\ 21"
                          		alsa.driver_name = snd_intel8x0
                          		device.bus_path = pci-0000:00:05.0
                          		sysfs.path = /devices/pci0000:00/0000:00:05.0/sound/card0
                          		device.bus = pci
                          		device.vendor.id = 8086
                          		device.vendor.name = "Intel\ Corporation"
                          		device.product.id = 2415
                          		device.product.name = "82801AA\ AC\'97\ Audio\ Controller"
                          		device.form_factor = internal
                          		device.string = front:0
                          		device.buffering.buffer_size = 19188
                          		device.buffering.fragment_size = 6396
                          		device.access_mode = mmap
                          		device.profile.name = analog-stereo
                          		device.profile.description = "Analog\ Stereo"
                          		device.description = "Built-in\ Audio\ Analog\ Stereo"
                          		alsa.mixer_name = "Analog\ Devices\ AD1980"
                          		alsa.components = AC97a:41445370
                          		module-udev-detect.discovered = 1
                          		device.icon_name = audio-card-pci
                          	gst-launch-1.0 ... ! pulsesink device=alsa_output.pci-0000_00_05.0.analog-stereo
                          
                          
                          Device found:
                          
                          	name  : e-CAM83_USB
                          	class : Video/Source
                          	caps  : video/x-h264, stream-format=(string)byte-stream, alignment=(string)au, width=(int)3840, height=(int)2160, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction){ 30/1, 15/1 };
                          	        video/x-h264, stream-format=(string)byte-stream, alignment=(string)au, width=(int)1920, height=(int)1080, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)30/1;
                          	properties:
                          		udev-probed = true
                          		device.bus_path = pci-0000:00:0c.0-usb-0:2:1.0
                          		sysfs.path = /sys/devices/pci0000:00/0000:00:0c.0/usb1/1-2/1-2:1.0/video4linux/video0
                          		device.bus = usb
                          		device.subsystem = video4linux
                          		device.vendor.id = 2560
                          		device.vendor.name = e-ConSystems
                          		device.product.id = c184
                          		device.product.name = e-CAM83_USB
                          		device.serial = e-ConSystems_e-CAM83_USB_00.00.01
                          		device.capabilities = :capture:
                          		device.api = v4l2
                          		device.path = /dev/video0
                          		v4l2.device.driver = uvcvideo
                          		v4l2.device.card = e-CAM83_USB
                          		v4l2.device.bus_info = usb-0000:00:0c.0-2
                          		v4l2.device.version = 328933 (0x000504e5)
                          		v4l2.device.capabilities = 2225078273 (0x84a00001)
                          		v4l2.device.device_caps = 69206017 (0x04200001)
                          	gst-launch-1.0 v4l2src ! ...
                          
                          
                          Device found:
                          
                          	name  : e-CAM83_USB
                          	class : Video/Source
                          	caps  : video/x-raw, format=(string)YUY2, width=(int)640, height=(int)480, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)15/1;
                          	        image/jpeg, width=(int)1920, height=(int)1080, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)30/1;
                          	properties:
                          		udev-probed = true
                          		device.bus_path = pci-0000:00:0c.0-usb-0:2:1.0
                          		sysfs.path = /sys/devices/pci0000:00/0000:00:0c.0/usb1/1-2/1-2:1.0/video4linux/video2
                          		device.bus = usb
                          		device.subsystem = video4linux
                          		device.vendor.id = 2560
                          		device.vendor.name = e-ConSystems
                          		device.product.id = c184
                          		device.product.name = e-CAM83_USB
                          		device.serial = e-ConSystems_e-CAM83_USB_00.00.01
                          		device.capabilities = :capture:
                          		device.api = v4l2
                          		device.path = /dev/video2
                          		v4l2.device.driver = uvcvideo
                          		v4l2.device.card = e-CAM83_USB
                          		v4l2.device.bus_info = usb-0000:00:0c.0-2
                          		v4l2.device.version = 328933 (0x000504e5)
                          		v4l2.device.capabilities = 2225078273 (0x84a00001)
                          		v4l2.device.device_caps = 69206017 (0x04200001)
                          	gst-launch-1.0 v4l2src device=/dev/video2 ! ...
                          

                          A simple video test will not work either.

                          voxl:~$ gst-launch-1.0 videotestsrc ! videoconvert ! autovideosink
                          Setting pipeline to PAUSED ...
                          Pipeline is PREROLLING ...
                          WARNING: from element /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0: Resource not found.
                          Additional debug info:
                          /opt/workspace/build/apq8096-le-1-0-1_ap_standard_oem.git/apps_proc/poky/build/tmp-glibc/work/armv7a-vfp-neon-oemllib32-linux-gnueabi/lib32-gstreamer1.0-plugins-good/1.10.4-r0/gst-plugins-good-1.10.4/gst/autodetect/gstautodetect.c(347): gst_auto_detect_find_best (): /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0:
                          Failed to find a usable video sink
                          Pipeline is PREROLLED ...
                          Setting pipeline to PLAYING ...
                          New clock: GstSystemClock
                          ^Chandling interrupt.
                          Interrupt: Stopping pipeline ...
                          Execution ended after 0:00:17.998587815
                          Setting pipeline to PAUSED ...
                          Setting pipeline to READY ...
                          Setting pipeline to NULL ...
                          Freeing pipeline ...
                          

                          Are there any plugins that I could be missing?

                          K 1 Reply Last reply 4 Apr 2023, 01:39 Reply Quote 0
                          • K
                            Kris @Kris
                            last edited by Kris 4 Apr 2023, 01:41 4 Apr 2023, 01:39

                            Keeps failing to find a usable video sink.

                            voxl:~$ show-video-device-info.sh
                            /dev/video2: e-CAM83_USB 2560:c184
                            /dev/video3: e-CAM83_USB 2560:c184
                            voxl:~$ gst-launch-1.0 v4l2src device=/dev/video3 ! videoconvert ! autovideosink
                            Setting pipeline to PAUSED ...
                            ERROR: Pipeline doesn't want to pause.
                            WARNING: from element /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0: Resource not found.
                            Additional debug info:
                            /opt/workspace/build/apq8096-le-1-0-1_ap_standard_oem.git/apps_proc/poky/build/tmp-glibc/work/armv7a-vfp-neon-oemllib32-linux-gnueabi/lib32-gstreamer1.0-plugins-good/1.10.4-r0/gst-plugins-good-1.10.4/gst/autodetect/gstautodetect.c(347): gst_auto_detect_find_best (): /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0:
                            Failed to find a usable video sink
                            ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Could not open device '/dev/video3' for reading and writing.
                            Additional debug info:
                            /opt/workspace/build/apq8096-le-1-0-1_ap_standard_oem.git/apps_proc/poky/build/tmp-glibc/work/armv7a-vfp-neon-oemllib32-linux-gnueabi/lib32-gstreamer1.0-plugins-good/1.10.4-r0/gst-plugins-good-1.10.4/sys/v4l2/v4l2_calls.c(625): gst_v4l2_open (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
                            system error: Device or resource busy
                            Setting pipeline to NULL ...
                            Freeing pipeline ...
                            voxl:~$ gst-launch-1.0 v4l2src device=/dev/video2 ! videoconvert ! autovideosink
                            Setting pipeline to PAUSED ...
                            ERROR: Pipeline doesn't want to pause.
                            WARNING: from element /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0: Resource not found.
                            Additional debug info:
                            /opt/workspace/build/apq8096-le-1-0-1_ap_standard_oem.git/apps_proc/poky/build/tmp-glibc/work/armv7a-vfp-neon-oemllib32-linux-gnueabi/lib32-gstreamer1.0-plugins-good/1.10.4-r0/gst-plugins-good-1.10.4/gst/autodetect/gstautodetect.c(347): gst_auto_detect_find_best (): /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0:
                            Failed to find a usable video sink
                            ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Could not open device '/dev/video2' for reading and writing.
                            Additional debug info:
                            /opt/workspace/build/apq8096-le-1-0-1_ap_standard_oem.git/apps_proc/poky/build/tmp-glibc/work/armv7a-vfp-neon-oemllib32-linux-gnueabi/lib32-gstreamer1.0-plugins-good/1.10.4-r0/gst-plugins-good-1.10.4/sys/v4l2/v4l2_calls.c(625): gst_v4l2_open (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
                            system error: Device or resource busy
                            Setting pipeline to NULL ...
                            Freeing pipeline ...
                            voxl:~$ 
                            

                            Output when debug command is used.

                            voxl:~$ GST_DEBUG=3 gst-launch-1.0 v4l2src device=/dev/video3 ! videoconvert ! autovideosink
                            Setting pipeline to PAUSED ...
                            0:00:00.229741613  4689    0xdf500 WARN              autodetect gstautodetect.c:347:gst_auto_detect_find_best:<autovideosink0> warning: Failed to find a usable video sink
                            0:00:00.277135238  4689    0xdf500 WARN                    v4l2 v4l2_calls.c:625:gst_v4l2_open:<v4l2src0> error: Could not open device '/dev/video3' for reading and writing.
                            0:00:00.277213207  4689    0xdf500 WARN                    v4l2 v4l2_calls.c:625:gst_v4l2_open:<v4l2src0> error: system error: Device or resource busy
                            ERROR: Pipeline doesn't want to pause.
                            WARNING: from element /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0: Resource not found.
                            Additional debug info:
                            /opt/workspace/build/apq8096-le-1-0-1_ap_standard_oem.git/apps_proc/poky/build/tmp-glibc/work/armv7a-vfp-neon-oemllib32-linux-gnueabi/lib32-gstreamer1.0-plugins-good/1.10.4-r0/gst-plugins-good-1.10.4/gst/autodetect/gstautodetect.c(347): gst_auto_detect_find_best (): /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0:
                            Failed to find a usable video sink
                            ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Could not open device '/dev/video3' for reading and writing.
                            Additional debug info:
                            /opt/workspace/build/apq8096-le-1-0-1_ap_standard_oem.git/apps_proc/poky/build/tmp-glibc/work/armv7a-vfp-neon-oemllib32-linux-gnueabi/lib32-gstreamer1.0-plugins-good/1.10.4-r0/gst-plugins-good-1.10.4/sys/v4l2/v4l2_calls.c(625): gst_v4l2_open (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
                            system error: Device or resource busy
                            Setting pipeline to NULL ...
                            Freeing pipeline ...
                            
                            E 1 Reply Last reply 4 Apr 2023, 22:52 Reply Quote 0
                            • tomT
                              tom admin
                              last edited by 4 Apr 2023, 17:26

                              @Kris You can't use autovideosink on VOXL because it doesn't have a display

                              K 1 Reply Last reply 4 Apr 2023, 23:31 Reply Quote 0
                              • E
                                Eric Katzfey ModalAI Team @Kris
                                last edited by 4 Apr 2023, 22:52

                                @Kris Maybe try fakesink instead?

                                K 2 Replies Last reply 4 Apr 2023, 23:07 Reply Quote 0
                                • K
                                  Kris @Eric Katzfey
                                  last edited by Kris 4 Apr 2023, 23:43 4 Apr 2023, 23:07

                                  @Eric-Katzfey
                                  I have tried both fakesink and playbin.
                                  Neither of them work either.
                                  Has anyone gotten gstreamer to successfully work on VOXL1?

                                  E 1 Reply Last reply 4 Apr 2023, 23:56 Reply Quote 0
                                  • K
                                    Kris @Eric Katzfey
                                    last edited by Kris 5 Apr 2023, 00:00 4 Apr 2023, 23:27

                                    @Eric-Katzfey
                                    I also have another UVC camera, but it only outputs MJPG (compressed) and YUY2 (uncompressed 640x480 30fps) formats.

                                    It works for streaming, but I am trying to record the video to the Seeker’s SD card.
                                    Is there a way to do this with Gstreamer or a similar program?

                                    1 Reply Last reply Reply Quote 0
                                    • K
                                      Kris @tom
                                      last edited by 4 Apr 2023, 23:31

                                      @tom
                                      Could this be the reason why no devices are found when I use gst-device-monitor-1.0 Video/Source on the VOXL1?

                                      1 Reply Last reply Reply Quote 0
                                      • K
                                        Kris
                                        last edited by 4 Apr 2023, 23:52

                                        I see that the VOXL1 has the gst-plugins-good.
                                        Is it possible to also add the gst-plugins-bad and gst-plugins-ugly?

                                        1 Reply Last reply Reply Quote 0
                                        • E
                                          Eric Katzfey ModalAI Team @Kris
                                          last edited by 4 Apr 2023, 23:56

                                          @Kris We use GStreamer in our voxl-streamer application. It does work on VOXL1.

                                          K 2 Replies Last reply 4 Apr 2023, 23:56 Reply Quote 0
                                          • K
                                            Kris @Eric Katzfey
                                            last edited by 4 Apr 2023, 23:56

                                            @Eric-Katzfey
                                            Ok, thank you for the confirmation.

                                            1 Reply Last reply Reply Quote 0
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