Captions in Livestream Events
Gradual livestream events support displaying Closed Captions on each stage within Gradual.
There are two modes for captions in livestream stages: Automatically Generated Captions and Human Generated Captions.
Auto-Generated Captions
By default, Automatically Generated Captions are available in all livestream events for all customers. Captions are turned ON for all newly created livestream stages.
For events created prior to May 12, 2025, you will need to enable captions via the stage edit page in the dashboard.
To enable or disable captions for a stage, you can do so via the dashboard from within your event under Event Setup --> Stage Settings --> Edit
Captions can be enabled or disabled per stage. This means you can have stages within the same event with or without captions or different caption modes.
Auto-generated captions only support english at this time, but will attempt to translate non-english spoken audio to english.
Human Generated Captions
If you do not wish to use auto-generated captions within Gradual, you may use other commercially available tools (e.g. AI-Media, EEG Falcon, 3Play, Verbit, Webcaptioner) to embed your captions into your H.264 RTMP stream and displayed in Gradual.
Gradual supports receiving closed captions embedded in the H.264 video stream using the CEA-608 standard for a single language. Captions are by default configured to be US English (en-US) and are should be transmitted on caption channel 1 (cc1). These are the default configurations for most caption providers.
If you want to use this method of captions, please reach out to Gradual Support at [email protected] well in advance of your event so the proper settings can be adjusted.
Captions in Webinars and Meeting Rooms
Gradual does not currently support captions within our meeting room or webinar environments. This will be supported in the future.