A liveCuepoint resource starts an ad break in the broadcast video stream.

Note: The API command for controlling cuepoints is actually part of the YouTube Content ID API and has different authorization requirements than requests to manage liveBroadcast and liveStream resources.


The API supports the following methods for liveCuepoints resources:

Inserts a cuepoint into a live broadcast. Currently, requests to this method must be authorized by an account associated with a YouTube Content Owner. Try it now.

Resource representation

The following JSON structure shows the format of a liveCuepoints resource:

  "id": string,
  "kind": "youtubePartner#liveCuepoint",
  "broadcastId": string,
  "settings": {
    "offsetTimeMs": long,
    "walltime": datetime,
    "cueType": string,
    "durationSecs": unsigned integer


The following table defines the properties that appear in this resource:

id string
A value that YouTube assigns to uniquely identify the cuepoint.
kind string
The type of the API resource. For liveCuepoint resources, the value is youtubePartner#liveCuepoint.
broadcastId string
The ID that YouTube assigns to uniquely identify the broadcast into which the cuepoint is being inserted.
settings object
The settings object defines the cuepoint's settings.
settings.offsetTimeMs long
This value specifies a point in time in the video when viewers should see an ad or in-stream slate. The property value identifies a time offset, in milliseconds, from the beginning of the monitor stream. Though measured in milliseconds, the value is actually an approximation, and YouTube will insert the cuepoint as closely as possible to that time. You should not specify a value for this parameter if your broadcast does not have a monitor stream.

This property's default value is 0, which indicates that the cuepoint should be inserted as soon as possible. If your broadcast stream is not delayed, then 0 is also the only valid value. However, if your broadcast stream is delayed, then the property value can specify the time when the cuepoint should be inserted. See the Getting started guide for more details.

Note: If your broadcast had a testing phase, the offset is measured from the time that the testing phase began.
settings.walltime datetime
This value specifies the wall clock time at which the cuepoint should be inserted. The value is specified in ISO 8601 (YYYY-MM-DDThh:mm:ss.sssZ) format.

The API returns an error if a request tries to insert a cuepoint that specifies a value for this property and for the settings.offsetTimeMs property.
settings.cueType string
The cuepoint's type. See the Getting started guide for an explanation of the different types of cuepoints. Also see the Life of a broadcast document for best practices about inserting cuepoints during your broadcast.

Valid values for this property are:
  • ad
settings.durationSecs unsigned integer
The cuepoint's duration, in seconds. This value must be specified if the cueType is ad and is ignored otherwise.