Smart Home CameraStream Trait Schema

action.devices.traits.CameraStream - This trait covers how to control the camerastream of a device.

This trait belongs to devices which have the capability to stream video feeds to third party screens, Chromecast-connected screens, or smartphones. By and large, these are security cameras or baby cameras. But this trait also applies to more complex devices which have a camera on them (for example, video-conferencing devices or a vacuum robot with a camera on it).

Device ATTRIBUTES

Devices with this trait may report the following attributes as part of the SYNC operation. To learn more about handling SYNC intents, see Intent fulfillment.

Attributes Type Description
cameraStreamSupportedProtocols Array

Required.

Supported media types, according to preference, for the real-time stream.
[item, ...] String

Media type.

Supported values:

hls
dash
smooth_stream
progressive_mp4
cameraStreamNeedAuthToken Boolean

Required.

Whether an auth token will be provided via cameraStreamAuthToken for your custom Cast receiver to stream the camera feed.
cameraStreamNeedDrmEncryption Boolean

Deprecated

(Default: false)

Whether the stream content requires DRM encryption.

Examples

Camera with multiple protocols support, not requiring an auth token.

{
  "cameraStreamSupportedProtocols": [
    "hls",
    "dash",
    "smooth_stream",
    "progressive_mp4"
  ],
  "cameraStreamNeedAuthToken": false
}

Camera supporting a single protocol, requiring an auth token.

{
  "cameraStreamSupportedProtocols": [
    "hls"
  ],
  "cameraStreamNeedAuthToken": true
}

Device STATES

None.

Device COMMANDS

Devices with this trait may respond to the following commands as part of the EXECUTE operation. To learn more about handling EXECUTE intents, see Intent fulfillment.

action.devices.commands.GetCameraStream

Begin streaming the camera (the return URL of the stream) which Google presents on a screen, such as the user's phone, the Assistant surface itself, or through another media or Cast target.

Parameters

Parameters Type Description
StreamToChromecast Boolean

Required.

Whether the stream will be played on a Chromecast device. Currently, this is always true.
SupportedStreamProtocols Array

Required.

Media types/formats supported by the desired destination.
[item, ...] String

Media type.

Supported values:

hls
dash
smooth_stream
progressive_mp4

Examples

Show the front door.

{
  "command": "action.devices.commands.GetCameraStream",
  "params": {
    "StreamToChromecast": true,
    "SupportedStreamProtocols": [
      "progressive_mp4",
      "hls",
      "dash",
      "smooth_stream"
    ]
  }
}

Show front door camera on my Chromecast.

{
  "command": "action.devices.commands.GetCameraStream",
  "params": {
    "StreamToChromecast": true,
    "SupportedStreamProtocols": [
      "hls"
    ]
  }
}

Results

Results Type Description
cameraStreamAccessUrl String

Required.

URL endpoint for retrieving the real-time stream in the format specified by cameraStreamProtocol.
cameraStreamReceiverAppId String

Cast receiver ID to process the camera stream; default receiver will be used if not provided.
cameraStreamAuthToken String

An auth token for the specific receiver to authorize access to the stream. If cameraStreamNeedAuthToken is true and this value is not provided, the user's OAuth credentials will be used as the auth token.
cameraStreamProtocol String

Required.

The media format that the stream url points to. It should be one of the protocol listed in the SupportedStreamProtocols command parameter.

Supported values:

hls
dash
smooth_stream
progressive_mp4

Examples

Show the front door (default Cast receiver).

{
  "cameraStreamAccessUrl": "https://fluffysheep.com/baaaaa.mp4",
  "cameraStreamProtocol": "progressive_mp4"
}

Show front door camera (custom Cast receiver).

{
  "cameraStreamAccessUrl": "https://fluffysheep.com/baaaaa.mp4",
  "cameraStreamReceiverAppId": "1g2f89213hg",
  "cameraStreamAuthToken": "12657342190192783",
  "cameraStreamProtocol": "progressive_mp4"
}

Device ERRORS

See the full list of errors and exceptions.

Supported streaming protocols

This trait supports the following streaming protocols: