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    VOXL camera configuration

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    • Eric KatzfeyE
      Eric Katzfey ModalAI Team @Kris
      last edited by

      @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

      KrisK 2 Replies Last reply Reply Quote 0
      • KrisK
        Kris @Eric Katzfey
        last edited by

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

        1 Reply Last reply Reply Quote 0
        • KrisK
          Kris @Eric Katzfey
          last edited by Kris

          @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?

          KrisK 1 Reply Last reply Reply Quote 0
          • KrisK
            Kris @Kris
            last edited by Kris

            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 ...
            
            Eric KatzfeyE 1 Reply Last reply Reply Quote 0
            • tomT
              tom admin
              last edited by

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

              KrisK 1 Reply Last reply Reply Quote 0
              • Eric KatzfeyE
                Eric Katzfey ModalAI Team @Kris
                last edited by

                @Kris Maybe try fakesink instead?

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                • KrisK
                  Kris @Eric Katzfey
                  last edited by Kris

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

                  Eric KatzfeyE 1 Reply Last reply Reply Quote 0
                  • KrisK
                    Kris @Eric Katzfey
                    last edited by Kris

                    @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?

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                    • KrisK
                      Kris @tom
                      last edited by

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

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                      • KrisK
                        Kris
                        last edited by

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

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                        • Eric KatzfeyE
                          Eric Katzfey ModalAI Team @Kris
                          last edited by

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

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                          • KrisK
                            Kris @Eric Katzfey
                            last edited by

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

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                            • KrisK
                              Kris @Eric Katzfey
                              last edited by

                              @Eric-Katzfey
                              If possible, could you please provide me with a VOXL1 working pipeline (streaming or recording) using any UVC camera of your choice?

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                              • Eric KatzfeyE
                                Eric Katzfey ModalAI Team @Kris
                                last edited by

                                @Kris That's not how it works on VOXL1. The voxl-uvc-server application places frames into an MPA pipe and the voxl-streamer application (based on gstreamer) reads those frames and processes them for output using RTSP. However, I do believe that I did try command line gst-launch-1.0 style pipelines with UVC cameras in the past and they worked. I don't have an example of one though. You may want to start with one of our supported UVC cameras first and then try to get your particular UVC camera working. I always start with the Logitech C270. We list the specific cameras that we support because each one caused us some issues and required code changes to make it work. We even had to fork the libuvc library in order to make changes to that to get some of the cameras working properly.

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                                • KrisK
                                  Kris @Eric Katzfey
                                  last edited by

                                  @Eric-Katzfey
                                  Ok, I understand.
                                  Thank you for all your help and support with this issue.
                                  I will try one of your tested & supported UVC cameras.

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                                  • KrisK
                                    Kris @Eric Katzfey
                                    last edited by Kris

                                    @Eric-Katzfey
                                    I bought the Logitech C270 and tried testing it with some Gstreamer commands.
                                    So far I have been able to use it on my Linux PC with these commands.

                                    Connected to PC and viewing video;

                                    gst-launch-1.0 -v v4l2src ! video/x-raw,format=YUY2 ! videoconvert ! autovideosink
                                    

                                    Connected to PC and recording to PC;

                                    gst-launch-1.0 v4l2src device=/dev/video0 ! image/jpeg,width=640,height=480,framerate=30/1 ! jpegdec ! x264enc ! qtmux ! filesink location=C270.mp4 -e
                                    

                                    However, when I connect the C270 to the Seeker I cannot get any of these to work.
                                    I have tried different video devices 0-3 and I have also substituted the autovideosink with fakesink but these changes are still not working.

                                    Could you please show me a Gstreamer example for this Logitech C270 camera that works on the Seeker?
                                    I would like to either stream, record, or stream+record (possibly using tee) the video using gst-launch-1.0.
                                    Thank you

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