BoxCast gives you the ability to have automated captions appear on your live broadcast giving your viewers the opportunity to use watch with captions both during the live broadcast and once it is archived.

Be aware that live captions are not available on all plans. If you do not have this feature on your current plan and would like to add it, please reach out to your client manager or email

Automated Live Captioning

Step 1

Schedule a broadcast and fill out all the information as you normally would.


Step 2
Click on Advanced Settings and select "Automated Live Captioning."


Step 3
Now the broadcast will automatically caption the broadcast with no additional set up.


Note: In your dashboard, from the Captions tab on the Broadcast Details page of a live broadcast, captions may be disabled mid-stream. When enabled, the status indicator will display as green (no indicator when disabled). When making a change to the caption status, it is imperative the change is made relative to your real-time event. If the change is made while monitoring live playback, the change will appear later than desired on the live broadcast, due to live stream latency.

Captions Example Video

Step 4

Once the broadcast has ended you can review & edit the created captions. Simply click the text to change what you want it to say. Play using the player on the right, and watch as the blue line tracks through and highlights the caption that is currently being played. This is the best way to review an entire broadcast. Click the Play button on each line to skip to that part of the broadcast.



Review Warnings

From our automated caption creation, we are able to understand where there was uncertainty about whether the generated words are correct or not. The captions with higher uncertainty are shown as a warning in red. We recommend that you review every line, but if you are limited on time start by editing only the captions with higher uncertainty first. You can filter to only show these by clicking the settings icon in the top right corner then selecting "Review Warning Only" of the editing tool. Please do note that there


Find and Replace

Within the settings, you will also see a Find and Replace Tool. We recommend using this for names and other proper nouns or other uncommon words. When captioning our own Webinars, we often have to change "Box cars" to "BoxCast."

Edit Timestamp

This allows you to control when a caption shows up on the screen.

Add a Caption

You can add a new line at the end of the list of captions by selecting Insert Cue.

Step 5
When you are finished editing, you can click Publish. It will take a few minutes for those captions to process be live for your viewers in the BoxCast Player. Feel free to leave the page. No further action is required to push those captions live.

Common Questions

Can viewers turn on/off the captions?
Yes. There is a CC toggle to enable/disable captions in the player.

How can I improve the quality of the automatically generated captions?
The quality of the captions is determined by the quality and clarity of the audio input. A single speaker with a good microphone will perform well, but a crowded room with multiple speakers and on-camera audio will be much harder for the automated caption tool to pick out the right words. You can also add custom vocabulary (IE: the name of your organization or city.)

Do the captions show up on the App for Apple TV, Roku & FireTV?

Can I edit the captions?
You cannot edit the captions during the live event, but you are able to edit the captions after the broadcast with our caption editing tool.

Can I add Captions Automatically to a recorded broadcast?

Yes! Check out this article to learn more

What languages are supported?

Currently, English is the only supported language. Translation or transcripts of other spoken languages is not supported.

Will these captions show up everywhere that I streamed the broadcast?

Closed captions will populate for live or archived broadcasts on any BoxCast viewer experience: BoxCast embedded Player,, and BoxCast Apps for Apple TV and Roku.

Unfortunately, the captions will NOT populate for live streaming or exports to external platforms such as Facebook, YouTube, Twitter, Vimeo, etc.

Does this support embedded captions via RTMP such as CEA-608, CEA-708, DVB-T, DVB-S, WST?

No. We only support automatically generated captions or separated captions like WebVTT files.

Can the automatically generated captions be downloaded?

Yes! We allow the transcribe of the captions to be downloaded into a WebVTT file or a Text file.


Can I have every broadcast captioned automatically?

If you want your broadcasts to always be captioned go to Settings > Preferences > click on edit in the Automated Captioning area and select Always Caption Broadcasts under the DEFAULTS section.


Does BoxCast have any way to prevent profanity from being used in our captions?

Yes! BoxCast has a "Filter Profanity" option that will help prevent mispronounced words not show up as swear words. This is enabled for your account automatically.

Can captions be re-positioned in the player window?

No. The captions will only display near the bottom of the broadcast, so keep in mind that they will interfere with lower-third content.

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