# Gimbal camera streaming not starting

Source: https://forum.modalai.com/topic/309/gimbal-camera-streaming-not-starting
Category: General Questions (https://forum.modalai.com/category/2/general-questions)
Posted: 2021-07-01 20:44:51 UTC by Daniel Ryu
Replies: 18 · Views: 3205

## Daniel Ryu · 2021-07-01 20:44:51 UTC

I bought a m500 with gimbal attached, and I can't seem to start the gimbal camera streaming. I ssh-ed into the drone over microhard radio (root@ip-address, password oelinux123). The drone cannot recognize ffmpeg for some reason. The drone appears to be up to date software-wise as well

 ![Screenshot from 2021-07-01 13-42-24.png](https://forum.modalai.com/assets/uploads/files/1625172255814-screenshot-from-2021-07-01-13-42-24.png) 
![Screenshot from 2021-07-01 13-41-19.png](https://forum.modalai.com/assets/uploads/files/1625172265870-screenshot-from-2021-07-01-13-41-19.png)

## Reply by tom (ModalAI staff) · 2021-07-01 21:09:09 UTC

@Daniel-Ryu I believe ffmpeg was removed from voxl-suite a while back. It can be built and installed by following the instructions here: https://gitlab.com/voxl-public/other/voxl-ffmpeg

## Reply by Daniel Ryu · 2021-07-01 21:35:40 UTC (in reply to tom)

@tom Could the voxl gimbal user guide be updated with that information? It would help a lot of users like myself. https://docs.modalai.com/voxl-m500-gimbal-user-guide/#streaming-to-qgroundcontrol

## Reply by tom (ModalAI staff) · 2021-07-01 21:47:35 UTC

@Daniel-Ryu Yes absolutely, thank you for the feedback.

## Reply by Daniel Ryu · 2021-07-06 20:57:15 UTC

When trying to run "voxl-docker -i voxl-emulator" as part of setting up voxl-ffmpeg, I get this error below:

Error while pulling image: Get https://index.docker.io/v1/repositories/library/voxl-emulator/images: x509: certificate has expired or is not yet valid

How do I fix this?

## Reply by tom (ModalAI staff) · 2021-07-06 20:59:19 UTC

@Daniel-Ryu Have you downloaded and loaded the voxl-emulator image from https://developer.modalai.com/asset/download/75 ?

## Reply by Daniel Ryu · 2021-07-06 21:07:10 UTC (in reply to tom)

@tom Sorry, to clarify: I want to be able to run ffmpeg and stream from the gimbal from my m500, not from a voxl-emulator. Am I misunderstanding and instead must install the voxl-emulator to run ffmpeg?

## Reply by tom (ModalAI staff) · 2021-07-06 21:09:14 UTC

@Daniel-Ryu voxl-emulator can be used to build packages for VOXL on your Linux PC. You can read about it here: https://docs.modalai.com/install-voxl-docker/

## Reply by Daniel Ryu · 2021-07-06 22:42:33 UTC (in reply to tom)

@tom That was it, thank you. I have just one suggestion: please include in the voxl-ffmpeg instructions to run ./install_on_voxl.sh at the end to deploy the ipk

## Reply by Daniel Ryu · 2021-07-06 22:58:20 UTC

![Screenshot from 2021-07-06 15-55-10.png](https://forum.modalai.com/assets/uploads/files/1625612128744-screenshot-from-2021-07-06-15-55-10.png) 

ffmpegs is working but I am still unable to stream to QGC. I'm using the same ip of QGC that is in voxl-vision-px4.conf that allows the drone to even connect to QGC in the first place. Here are all my settings.

![Screenshot from 2021-07-06 15-57-24.png](https://forum.modalai.com/assets/uploads/files/1625612299582-screenshot-from-2021-07-06-15-57-24.png)

## Reply by Eric Katzfey (ModalAI staff) · 2021-07-07 15:45:50 UTC (in reply to Daniel Ryu)

@Daniel-Ryu Are you able to see the video in another viewer, like VLC?

## Reply by Daniel Ryu · 2021-07-08 18:44:29 UTC (in reply to Eric Katzfey)

@Eric-Katzfey Yes, I can get the video to stream following the instructions here https://docs.modalai.com/uvc-streaming/

## Reply by Daniel Ryu · 2021-07-08 18:47:42 UTC (in reply to Daniel Ryu)

Also, could https://docs.modalai.com/voxl-m500-gimbal-user-guide/#streaming-to-qgroundcontrol this guide have a link to this guide here https://docs.modalai.com/uvc-streaming? I came across the second one quite by accident, despite them accomplishing similar purposes

## Reply by Daniel Ryu · 2021-07-08 19:02:09 UTC

One more question: there's a config file referred to in this guide which is supposed to demonstrate how the gimbal can be controlled from the RC. Which one is it? https://docs.modalai.com/voxl-m500-gimbal-user-guide/#streaming-to-qgroundcontrol

## Reply by modaltb (ModalAI staff) · 2021-07-08 20:15:37 UTC

Here's a video that can help: https://youtu.be/eYr8nyFid0E?t=26

PX4 params here: https://gitlab.com/voxl-public/flight-core-px4/px4-parameters/-/blob/master/helpers/gimbal_dx8_config.params

## Reply by Daniel Ryu · 2021-07-09 02:16:34 UTC

My DX8 looks and behaves differently from the one in the video. Is there a way to confirm that the knob and the switch right next to it are indeed channels 8 and 7, respectively?

![Image from iOS.jpg](https://forum.modalai.com/assets/uploads/files/1625796956663-image-from-ios-resized.jpg)

## Reply by modaltb (ModalAI staff) · 2021-07-09 02:23:38 UTC

You can get a good feel from the radio configuration setup in QGC, where you can see the channel assignments -> roughly here  https://docs.modalai.com/configure-rc-radio/

## Reply by Daniel Ryu · 2021-07-09 18:15:50 UTC

I'm still having trouble working out the controller and the gimbal. Here's a video of what I did. The channel monitor acknowledges one switch as channel 6 (which I set to RC_MAP_AUX1) but doesn't seem to respond to the dial. https://we.tl/t-HWHzLeJ46h

## Reply by Daniel Ryu · 2021-09-22 22:21:46 UTC

Solution: sometimes when just binding the RC controller, the inputs aren't shown. Make sure to restart drone after rebinding. Additionally, I've found different controllers have different lever/switch inputs, so its good to use QGC to look for the responsive switches and assign the ones you want accordingly