Webinars

Using OBS with Gear Mode

If you want to have greater control of video and audio quality when running a webinar, whether it's live or pre-recorded, you might want to consider using Gear Mode. When using Gear Mode you're able to control the encoding of both the audio and video track of your stream by using a hardware live encoder or live broadcasting software.
Here we will go through how to run a pre-recorded webinar using the open-source broadcasting software OBS.

To get started, you will need to download and install OBS. This open source software will be used to send the stream from your computer to the webinar and is free of charge. You can download OBS from here.

Once you’ve installed OBS you will need to set up a new webinar and activate gear mode. To do this, create a new webinar and select "Show Advanced Settings" on toggle on the "Run in Gear Mode?" switch. This can also be done from your webinar management page by hovering over the Date and Time settings and selecting the pen icon. Then, follow the same steps as above.

Once you have activated gear mode, you are ready to stream. Enter the webinar room from your manage page and note down the information in the “Server” and “Stream” fields as these will be needed for setting up OBS. They are unique to the webinar you are streaming to, so it is important to get this information from the correct webinar.

Next, open up OBS. Here there are three things you need to do:

  1. Set OBS up to stream to your webinar. Click on “Settings” in the bottom right corner and select “Stream” in the new window that pops up. For the service type select “Custom...”. You will see two fields, Server and Stream Key. Copy the information you got from your webinar into these two fields.
  2. Select stream quality. Select “Output” on the left sidebar of the window. Here you can determine the resolution you want your webinar to be displayed in. For FullHD resolution, set the Output Mode to Advanced and tick the “Rescale Output” button and set the output to be 1920x1080. Click OK to save your settings.
  3. Select video file to stream. In the overview in OBS you should see a section called “Sources”. Click the + icon and select the “Media Source” option. First, create a source and name it. You will be asked to browse for a local file, so locate your pre-recorded webinar video on your computer, select that file and click okay.

After you have selected the video you should see the video start playing. You can stop or start the video playback by clicking the eye icon  in the “Sources” section. When you are ready, click “Start Streaming” in the bottom right corner.

The last step is to go back to your TwentyThree webinar, where you should see a message stating that the stream is initializing. When you can see the stream displaying in the webinar room, you can click the “Go Live” button in the top right corner to start streaming the webinar to your viewers.

If you need further information on OBS and its different functions and options, you can find that here.

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