YouTube Live Captioning: Schedule Live Captions in 3Play Media


Once the Live Event has been scheduled in YouTube, follow the steps below to schedule Live Captions for that event within the 3Play Media account system.

Live Captioning Event scheduling defaults to US-Eastern time unless a new timezone has been configured at the user level and configured for users outside of the US-Eastern time zone.

Click to learn how to schedule a YouTube Live Event


Step 1 - Schedule YouTube Live Event in 3Play Media

Sign in to 3Play Media and click Live Captioning in the top navigation bar. 


Step 2 - Within 3Play Media Click Schedule Live Captions 



Step 3 - Select YouTube


Step 4 - Select the YouTube linked Account and Event

Select the YouTube account corresponding to the live event scheduled in YouTube (if more than one account is linked) by clicking "Select Integration". Then, select a pre-scheduled event in Youtube by selecting and choosing the event under "External Event". 


Step 5 - Configure Live Captions

Select Service Type

3Play provides both Live Professional Captions as well as Live Auto Captions. Select the service type for your event using the dropdown. 

Add Event Name

Add in a name for your event that will make it easy for you to find the event when searching for it after scheduling. 


Enter an Estimated Event Duration

An Estimated event duration is an estimate for the maximum amount of time that your event will last for. 3Play will be ready to provide you with captions through the entire duration that you provide to us using this information. 



Enter a Pre-Event Start Time


Different from your event start time, the pre-event start time will tell us how many minutes before your event you'd like to start sending your stream to us. This is before your event start time, and will allow us to listen to your stream before your actual event start time. This is useful if you may start earlier than scheduled. 

Streaming to 3Play from your encoder 

To allow 3Play to receive your stream and create captions, you will stream to 3Play's caption service from your encoder. As a default, 3Play will provide you with a stream target (transcoder). The RTMP URL address and Key to the stream target are provided on the confirmation page of this workflow; you'll enter this information into your encoder stream settings in preparation for the event.

  • You may also elect to use a Reserved Stream Target, please see this support document for additional information. If you do not have a reserved stream target, please set this option to "Use single-use transcoder". 

Streaming quality & bandwidth recommendation: 3Play recommends a stream >2mbps. 



Caption Delivery

In Addition to posting back to the Youtube player during your live stream, captions can also be delivered to a captions embed, which is a code snippet (iFrame or Javascript) that can be added to a webpage (this requires access to the code through which the embed can be added). The following steps outline utilization of the captions embed.

3Play will also deliver captions to a second screen webpage, additional information on this captioning delivery method is available in this support document.


Note: With exception of a reserved embed or external web page, your caption link and embed code will be unique to each event. 

File Storage Location

Choose a folder within your 3Play Media account to send your finished live transcript to after your event is over. 



Improve Caption Accuracy 

Provide us with some additional information about your event to help our captioners and system caption your audio as accurately as possible. 


Select an Event Type

Tell us more about what captioner may be best for your event by selecting an accurate event type for us to categorize your event under. 



Provide an Event Description (optional)

Tell us more about your event with details to help our captioner research anything that they may need prior to your event starting. 


Provide a list of Speaker Names (optional) 

Provide us with a list of properly spelled speaker names for our captioners to use when captioning your event ( Live professional captioning ). 


Provide a Wordlist (optional)  

To improve accuracy of automated captions for a scheduled Live Captioning event, add a Wordlist of the proper nouns, terms, and phrases unique to your organization that may be commonly used during the event. 

Click to learn more information regarding Wordlists for Live Captioning Events


Set your Profanity Filter (optional)

Tell us how you'd like profanity in your event to be filtered, if at all. 


Set Constraints on your Event

Set your Stream Reconnection Wait Time

If your live stream disconnects during the event, this is how long we will wait before we disconnect from delivering captions. After this time has passed, you will no longer be able to connect to this event.


Set a Maximum Event Duration

Enter the duration in minutes of the live event to be live captioned. 

Note that this feature will determine the maximum length of the event and also act as a failsafe in case the streams are not manually stopped at the end of the live event.





Select a Captioning Overtime Option

Tell us how you'd like us to handle your event if you go past your estimated maximum event duration, until we hit your actual Max event duration. 


Enter Support Contact Information

Please enter contact information for your event host or the person streaming your event to us in the event that 3Play Technical support needs to get in touch.


Click Schedule Captioning

Click "Schedule captioning" on the right-hand side of the page to schedule your event once you have provided all of the necessary information. 


Copy Input RTMP URL & Key from the Confirmation Page

3Play will provide you with an Input RTMP URL & Key on the confirmation page. Enter this information into your encoder to stream to us when your event starts.  You can find this information under the event details on the lower right-hand side of the page for your event. If you cannot find this information after scheduling your event, you can find it by clicking "Live Captioning" in the upper portion of the page, clicking on the name of your event under upcoming events, and scrolling down to find the information on the lower right hand side of the page. 


Note: With the exception of a reserved stream target, your RTMP URL and Stream Key will be unique for each event. 

  • If you are running multiple RTMP events, you will need to ensure that you save the information for each event to enter into your transcoder before each event stream. 





Next Steps...

Streaming the Live Event via OBS

Have more questions? Submit a request


Please sign in to leave a comment.
Powered by Zendesk