Live caption requirements

Closed captions refer to the visual display of the audio in a programme. In order to add captions to your live event, you need to send captions to YouTube, either embedded in the video or through supported software that can send captions over HTTP POSTs.

For live events that appear on US television with captions, captions may be required online as well. You may wish to review the FCC's information on this here: http://www.fcc.gov/guides/captioning-internet-video-programming

Create your event as you normally would. You must be using the YouTube Live platform.

Sending embedded 608/708 closed captions

  1. Create a live stream by going to youtube.com/livestreaming/stream
  2. Select Stream at the top.
  3. Enter a title and description, then click Create Stream
  4. Click Settings
  5. Toggle on Captions
  6. In the drop-down, select Embedded 608/708
  7. Click Save.
  8. In your encoder settings choose EIA 608/CEA 708 captions, sometimes called 'embedded' captions. Depending on your setup, this may read captions from a specific file format or encode them in real time. While the 608/708 standard supports up to four language tracks, YouTube currently only supports one track of captions.

Supported software

Total Eclipse

  • You will need Eclipse/AccuCap 6.0 or above in order to use this feature. Contact tech support (support@eclipsecat.com or 1-800-800-1759) for installation and usage instructions.

Case CATalyst

  • You will need Case CATalyst BCS version 14.52 or above in order to use this feature. Contact tech support (1-800-323-4247 or 630-532-5100) for installation and usage instructions.

Caption Maker

  • You will need CaptionMaker version 5.22 or above to use this feature. Contact tech support for installation and usage instructions.

StreamText.Net

  • Cloud based caption delivery system that is compatible with all speech-to-text platforms. Please contact support@streamtext.net for instructions.

Live caption requirements for events

Sending embedded 608/708 closed captions for a live stream
  1. At the bottom of the Ingestion Settings tab, there is a Closed captions section. Select the Embedded 608/708 item in the drop-down menu.
  2. Hit Save.
  3. In your encoder settings choose EIA 608/CEA 708 captions, sometimes called 'embedded' captions. Depending on your setup, this may read captions from a specific file format or encode them in real time. While the 608/708 standard supports up to four language tracks, YouTube currently only supports one track of captions.
Enabling closed captions on events

(Requires working with one of our supported software options, listed below)

  1. After creating the event, make sure that you add a 30 s or 60 s broadcast delay in the Advanced settings tab.
  2. At the bottom of the Ingestion Settings tab, there is a Closed captions section. Tick the box for Enable captions (requires supported software).
  3. Click in the Caption Ingestion URL box to select all and copy it. This is a signed HTTP URL.
    Each stream entry point can have one caption feed only.
  4. Provide this URL to your captioner for them to enter in their YouTube-supported caption software.
  5. Hit Save.
For the best results, please ensure that your system's clock is accurate and please disable any anti-virus software that may be interfering with your captioning software.

Supported software

  • Total Eclipse
    • You will need Eclipse/AccuCap 6.0 or above in order to use this feature.
    • Contact tech support (support@eclipsecat.com or 1-800-800-1759) for installation and usage instructions.
  • Case CATalyst
    • You will need Case CATalyst BCS version 14.52 or above in order to use this feature.
    • Contact tech support (1-800-323-4247 or 630-532-5100) for installation and usage instructions.
  • Caption Maker
    • You will need CaptionMaker version 5.22 or above to use this feature.
    • Contact tech support for installation and usage instructions.
  • StreamText.Net
    • Cloud based caption delivery system that is compatible with all speech-to-text platforms.
    • Please contact support@streamtext.net for instructions.

If you are a closed caption vendor and would like to learn more about YouTube closed captions over HTTP, complete this form

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