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    voxl-streamer client repetitive connect/disconnect

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    • wilkinsafW
      wilkinsaf ModalAI Team
      last edited by

      I believe so. Let me find them online really quick. I was able to get the video's from the cameras streaming using the directions here: https://docs.modalai.com/uvc-streaming/

      I moved over the ffmpeg ipk and executed
      ffmpeg -i /dev/video2 -f mpegts udp://QCS_IP:4242

      So I know that they are working.

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

        @wilkinsaf There are some clues here: https://github.com/gregkh/usbutils/issues/42. It seems like there are some endian issues with interpretation of the guidFormat field. For example, for my Logitech C270 test camera, lsusb reports the guidFormat as 32595559-0000-0010-8000-00aa00389b71 but libuvc (which voxl-uvc-server uses) reports the guidFormat as 59555932-0000-1000-8000-00aa00389b71. So, my guess is that since lsusb reports the guidFormat of your camera as 59555932-0000-1000-8000-00aa00389b71, libuvc (and hence voxl-uvc-server) will see it as 32595559-0000-0010-8000-00aa00389b71 which doesn't match any valid formats. I think I can hack libuvc to add the extra guidFormat and then your cameras will work but I won't be able to test it without one of your cameras. But I will post it and you can try it. For reference this is where libuvc needs to be modified to add the extra guidFormat: https://github.com/libuvc/libuvc/blob/37f00abd32b083a3d748f2a25c1c794578b51c16/src/stream.c#L109

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

          @wilkinsaf There is a new version of libuvc available at http://voxl-packages.modalai.com/dev/libuvc_1.0.2_202112182223.ipk with the changes. If you rebuild the dev branch of voxl-uvc-server and install build deps from dev you should pick up the new libuvc. Then you can rebuild and test with your camera.

          wilkinsafW 2 Replies Last reply Reply Quote 1
          • wilkinsafW
            wilkinsaf ModalAI Team @Eric Katzfey
            last edited by

            @Eric-Katzfey roger that. thank you for your support here Eric

            1 Reply Last reply Reply Quote 0
            • wilkinsafW
              wilkinsaf ModalAI Team @Eric Katzfey
              last edited by

              @Eric-Katzfey will post results after run

              1 Reply Last reply Reply Quote 0
              • wilkinsafW
                wilkinsaf ModalAI Team @Eric Katzfey
                last edited by

                @Eric-Katzfey Sorry for being such a pain, but it seems like this repo keeps moving.

                I went to https://gitlab.com/voxl-public/modal-pipe-architecture/voxl-uvc-server

                but got this

                533db1c7-724e-4732-bf4a-7659d9acf39d-image.png

                I keep searching around for the repo, but can not find it

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

                  @wilkinsaf Sorry, it was setup as private. I changed it to public. Can you try again?

                  wilkinsafW 2 Replies Last reply Reply Quote 0
                  • wilkinsafW
                    wilkinsaf ModalAI Team @Eric Katzfey
                    last edited by

                    @Eric-Katzfey Got it, thank you!

                    Will download and play with

                    1 Reply Last reply Reply Quote 0
                    • wilkinsafW
                      wilkinsaf ModalAI Team @Eric Katzfey
                      last edited by

                      @Eric-Katzfey Will it remain public?

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

                        @wilkinsaf Yes, it will remain public. Did you get a chance to see if the changes worked?

                        wilkinsafW 2 Replies Last reply Reply Quote 0
                        • wilkinsafW
                          wilkinsaf ModalAI Team @Eric Katzfey
                          last edited by

                          @Eric-Katzfey Testing out today

                          1 Reply Last reply Reply Quote 0
                          • wilkinsafW
                            wilkinsaf ModalAI Team @Eric Katzfey
                            last edited by

                            @Eric-Katzfey

                            We seem to be having trouble finding the camera now which is weird. I wonder if we need to specifically download and install the drivers?

                            2f9579c4-88ea-4693-b7a8-e67415540bad-image.png

                            Eric KatzfeyE 2 Replies Last reply Reply Quote 0
                            • Eric KatzfeyE
                              Eric Katzfey ModalAI Team @wilkinsaf
                              last edited by

                              @wilkinsaf No, you shouldn't need any drivers. Any USB device should be listed with lsusb, even without any specific drivers. Does it show up when plugged into a regular Linux computer?

                              wilkinsafW 1 Reply Last reply Reply Quote 0
                              • wilkinsafW
                                wilkinsaf ModalAI Team @Eric Katzfey
                                last edited by

                                @Eric-Katzfey Yes, we have hardwired it into a computer before. We have seen the stream using ffmpeg on VOXL as well. We just can not seem to get voxl-streamer to work with it

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

                                  @wilkinsaf If you unplug the camera from Voxl does anything disappear from the lsusb list?

                                  wilkinsafW 1 Reply Last reply Reply Quote 0
                                  • wilkinsafW
                                    wilkinsaf ModalAI Team @Eric Katzfey
                                    last edited by wilkinsaf

                                    @Eric-Katzfey

                                    Yes, the top 3 entries in lsusb screenshots above are all cameras. I can unplug those one by one and see them disappear.
                                    Would it matter if we have 2 UVC cameras?

                                    Eric KatzfeyE 2 Replies Last reply Reply Quote 0
                                    • Eric KatzfeyE
                                      Eric Katzfey ModalAI Team @wilkinsaf
                                      last edited by

                                      @wilkinsaf Just try one at a time for now. And when you plug the camera in do you see a new /dev/videoX entry appear?

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

                                        @wilkinsaf Also, were you able to get the ordering information for these cameras? If they aren't too expensive I would like to order at least one of them to test against.

                                        wilkinsafW 3 Replies Last reply Reply Quote 0
                                        • wilkinsafW
                                          wilkinsaf ModalAI Team @Eric Katzfey
                                          last edited by

                                          @Eric-Katzfey

                                          Yes, let me try one at a time now.
                                          Here are the two cameras

                                          4de39b51-2708-4707-a1fe-d67161270aa3-image.png ![0_1640728100493_PXL_20211228_214717072.jpg](Uploading 100%)

                                          1. Banggood URL

                                          2. Blue Robotics URL

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

                                            @Eric-Katzfey

                                            Good news, I was able to get voxl-uvc-server to spin up with one usb camera connected.
                                            21d09d1b-d888-45a2-a663-51af22ab926b-image.png

                                            However, I am getting this issue from voxl-streamer
                                            cc766c80-29ad-4160-8191-964e40998ea5-image.png

                                            Seems like I need to figure out the frame size and set the correct one. Let me play around with that now

                                            Eric KatzfeyE 1 Reply Last reply Reply Quote 0
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