The capabilities for the media service is returned in the Capabilities element. Media profile capabilities. Streaming capabilities. Audio clip capabilities. MulticastAudioDecoder capabilities. Indicates if GetSnapshotUri is supported. Indicates whether or not Rotation feature is supported. Indicates the support for changing video source mode. Indicates if OSD is supported. Indicates the support for temporary osd text configuration. Indicates if Masking is supported. Indicates that privacy masks are only supported at the video source level and not the video source configuration level. If this is true any addition, deletion or change of a privacy mask done for one video source configuration will automatically be applied by the device to a corresponding privacy mask for all other video source configuration associated with the same video source. Indicates number of supported WebRTC configurations. List of supported video and audio media types as defined by IANA. E.g. "video/H264 audio/opus". Maximum number of profiles supported. The configurations supported by the device as defined by tr2:ConfigurationEnumeration. The enumeration value "All" shall not be included in this list. Indicates support for live media streaming via RTSP. Indicates support for RTP multicast. Indicates support for RTP/RTSP/TCP. Indicates support for non aggregate RTSP control. If streaming over WebSocket is supported, this shall return the RTSP WebSocket URI as described in Streaming Specification Section 5.1.1.5. Indicates support for non-RTSP controlled multicast streaming. Indicates support for live media streaming via RTSPS and SRTP. Indicates support for multicast audio decoder. Indicates whether the SRTP is supported in MulticastAudioDecoder or not. Indicates whether the IPv6 is supported in MulticastAudioDecoder or not. Indicates device has TTS capability. Indicates the maximum number of audio clips that can be uploaded to the device. Indicates the maximum size of the audio clip that can be uploaded, in KB. Enumerates the supported audio clip formats. See tr2: SupportedAudioClipFormat. Indicates the maximum length of content of a text for device to convert to an audio clip. List of supported languages. Uses ISO 639-1 alpha-2 language codes, such as"en" for English. See Codes for the Representation of Names of Languages. Optionally combined with ISO 3166-1 alpha-2 country codes using the "language-country" format to specify regional variations, such as"en-US" for American English. For country codes, see ISO 3166-1 Country Codes. List of supported voice types. See tr2: TTSVoiceType. Type of the configuration as defined by tr2:ConfigurationEnumeration. Reference token of an existing configuration. Token shall be included in the AddConfiguration request along with the type. Token shall be included in the CreateProfile request when Configuration elements are included and type is selected. Token is optional for RemoveConfiguration request. If no token is provided in RemoveConfiguration request, device shall remove the configuration of the type included in the profile. A set of media configurations. Optional configuration of the Video input. Optional configuration of the Audio input. Optional configuration of the Video encoder. Optional configuration of the Audio encoder. Optional configuration of the analytics module and rule engine. Optional configuration of the pan tilt zoom unit. Optional configuration of the metadata stream. Optional configuration of the Audio output. Optional configuration of the Audio decoder. Optional configuration of the Receiver. A media profile consists of a set of media configurations. User readable name of the profile. The configurations assigned to the profile. Unique identifier of the profile. A value of true signals that the profile cannot be deleted. Default is false. friendly name of the profile to be created Optional set of configurations to be assigned to the profile. List entries with tr2:ConfigurationEnumeration value "All" shall be ignored. Token assigned by the device for the newly created profile. Optional token of the requested profile. The types shall be provided as defined by tr2:ConfigurationEnumeration. Lists all profiles that exist in the media service. The response provides the requested types of Configurations as far as available. If a profile doesn't contain a type no error shall be provided. Reference to the profile where the configuration should be added Optional item. If present updates the Name property of the profile. List of configurations to be added. The types shall be provided in the order defined by tr2:ConfigurationEnumeration. List entries with tr2:ConfigurationEnumeration value "All" shall be ignored. This element contains a reference to the media profile from which the configuration shall be removed. List of configurations to be removed. The types shall be provided in the order defined by tr2:ConfigurationEnumeration. Tokens appearing in the configuration list shall be ignored. Presence of the "All" type shall result in an empty profile. This element contains a reference to the profile that should be deleted. Token of the requested configuration. Contains the token of an existing media profile the configurations shall be compatible with. This element contains a list of video encoder configurations. This element contains a list of video source configurations. This element contains a list of audio encoder configurations. This element contains a list of audio source configurations. This element contains a list of Analytics configurations. This element contains a list of metadata configurations This element contains a list of audio output configurations This element contains a list of audio decoder configurations Contains the modified video encoder configuration. The configuration shall exist in the device. Contains the modified video source configuration. The configuration shall exist in the device. Contains the modified audio encoder configuration. The configuration shall exist in the device. Contains the modified audio source configuration. The configuration shall exist in the device. Contains the modified metadata configuration. The configuration shall exist in the device. Contains the modified audio output configuration. The configuration shall exist in the device. Contains the modified audio decoder configuration. The configuration shall exist in the device. Contains the modified EQ Preset configuration. This message contains the video source configuration options. If a video source configuration is specified, the options shall concern that particular configuration. If a media profile is specified, the options shall be compatible with that media profile. If no tokens are specified, the options shall be considered generic for the device. This message contains the audio source configuration options. If a audio source configuration is specified, the options shall concern that particular configuration. If a media profile is specified, the options shall be compatible with that media profile. If no tokens are specified, the options shall be considered generic for the device. This message contains the audio encoder configuration options. If a audio encoder configuration is specified, the options shall concern that particular configuration. If a media profile is specified, the options shall be compatible with that media profile. If no tokens are specified, the options shall be considered generic for the device. This message contains the metadata configuration options. If a metadata configuration is specified, the options shall concern that particular configuration. If a media profile is specified, the options shall be compatible with that media profile. If no tokens are specified, the options shall be considered generic for the device. This message contains the audio output configuration options. If a audio output configuration is specified, the options shall concern that particular configuration. If a media profile is specified, the options shall be compatible with that media profile. If no tokens are specified, the options shall be considered generic for the device. This message contains the audio decoder configuration options. If a audio decoder configuration is specified, the options shall concern that particular configuration. If a media profile is specified, the options shall be compatible with that media profile. If no tokens are specified, the options shall be considered generic for the device. Token of the video source configuration Video Media Subtype for the video format. For definitions see tt:VideoEncodingMimeNames and IANA Media Types. The minimum guaranteed number of encoder instances (applications) for the VideoSourceConfiguration. If a device limits the number of instances for respective Video Codecs the response contains the information how many streams can be set up at the same time per VideoSource. The minimum guaranteed total number of encoder instances (applications) per VideoSourceConfiguration. The device is able to deliver the Total number of streams The minimum guaranteed total number of encoder instances (applications) per VideoSourceConfiguration. Defines the network protocol for streaming as defined by tr2:TransportProtocol The ProfileToken element indicates the media profile to use and will define the configuration of the content of the stream. Stable Uri to be used for requesting the media stream Contains a Profile reference for which a Synchronization Point is requested. The ProfileToken element indicates the media profile to use and will define the source and dimensions of the snapshot. Stable Uri to be used for requesting snapshot images. Contains the token of the Profile that is used to define the multicast stream. Contains a video source reference for which a video source mode is requested. Return the information for specified video source mode. Contains a video source reference for which a video source mode is requested. Indicate video source mode. The response contains information about rebooting after returning response. When Reboot is set true, a device will reboot automatically after setting mode. Max frame rate in frames per second for this video source mode. Max horizontal and vertical resolution for this video source mode. List of one or more encodings supported for this video source. For name definitions see tt:VideoEncodingMimeNames, and see IANA Media Types. After setting the mode if a device starts to reboot this value is true. If a device change the mode without rebooting this value is false. If true, configured parameters may not be guaranteed by the device after rebooting. Informative description of this video source mode. This field should be described in English. Indicate token for video source mode. Indication of whether this mode is active. If active this value is true. In case of non-indication, it means as false. The value of true shall be had by only one video source mode. The GetOSDs command fetches the OSD configuration if the OSD token is known. Token of the Video Source Configuration, which has OSDs associated with are requested. If token not exist, request all available OSDs. This element contains a list of requested OSDs. Contains the modified OSD configuration. Video Source Configuration Token that specifies an existing video source configuration that the options shall be compatible with. Contain the initial OSD configuration for create. Returns Token of the newly created OSD This element contains a reference to the OSD configuration that should be deleted. Token of the VideoSourceConfiguration the Mask is associated with. Geometric representation of the mask area. Type of masking as defined by tr2:MaskType:

• Color - The masked area is colored with color defined by the Color field.
• Pixelated - The masked area is filled in mosaic style to hide details.
• Blurred - The masked area is low pass filtered to hide details.

Color of the masked area. If set the mask will cover the image, otherwise it will be fully transparent. Token of the mask. Optional mask token of an existing mask. Optional token of a Video Source Configuration. List of Mask configurations. Mask to be updated. Video Source Configuration Token that specifies an existing video source configuration that the options shall be compatible with. Maximum supported number of masks per VideoSourceConfiguration. Maximum supported number of points per mask. Information which types of tr2:MaskType are supported. Valid values are 'Color', 'Pixelated' and 'Blurred'. Colors supported. Information whether the polygon must have four points and a rectangular shape. Indicates the device capability of change in color of privacy mask for one video source configuration will automatically be applied to all the privacy masks associated with the same video source configuration. Contain the initial mask configuration for create. Returns Token of the newly created Mask This element contains a reference to the Mask configuration that should be deleted. The signaling server URI. The CertPathValidationPolicyID for validating the signaling server certificate. If not configured, server certificate validation behavior is undefined and the device may either apply a vendor specific default validation policy or skip validation at all. The Authorization Server to use for getting access tokens. This refers to an entity in the list of configured Authorization Servers in the [ONVIF Security Service Specification]. The default media profile to use for streaming if no specific profile is specified when initializing a session. Enables/disables the configuration. Indicates if the device is connected to the server. This parameter is read-only. Optional user readable error information (readonly). Video Source Configuration Token that specifies an existing video source configuration that the options shall be compatible with. This message contains the WebRTC configurations to use for the device. If empty, existing WebRTC configurations are deleted. Enables/disables the audio clip. Name of the audio clip. Optional token list of physical audio outputs. Format of the audio clip. For definitions see tr2:SupportedAudioClipFormat parameter. The number of times the audio clip can be repeated when it is played. A value of 0 means no repeat (i.e., the audio clip plays once and does not repeat). A value of 1 means the audio clip plays once and repeats once after the first play. A value of -1 means the audio clip repeats infinitely after the first play until it is stopped by the user. Optional time interval, in seconds, between audio clips when the audio clip is repeated. Optional level to control the volume of the audio clip when it is played. Optional schedule token associated with the audio clip configuration. The audio clip shall be played when the configured schedule is triggered. Content of the audio clip. The language that is supported by the device and used for TTS audio clip playback. Uses ISO 639-1 alpha-2 language codes for definition, such as"en" for English. See Codes for the Representation of Names of Languages. Optionally combined with ISO 3166-1 alpha-2 country codes using the "language-country" format to specify regional variations, such as"en-US" for American English. For country codes, see ISO 3166-1 Country Codes. The voice type that is supported by the device and used for TTS audio clip playback. See tr2: TTSVoiceType. Unique token associated with the audio clip. Configuration of the audio clip. Unique token associated with the audio clip. Name of the audio clip. Token list of physical audio outputs. Output level to control the volume of the audio clip when it is played. Number of repeat cycles left while playing the audio clip. Audio clip token. List of audio clip items. Optional token associated with the audio clip. Audio clip configuration to add. Unique token of the audio clip to be uploaded. A URL to which the audio clip can be uploaded. Expiry time by which the client should upload the audio clip to the device. Unique token associated with the audio clip. Audio clip configuration to modify. Optional token associated with the audio clip. Audio clip configuration to add. The configuration for the TTS audio clip to add. Unique token assigned by device for the TTS audio clip. Token of the audio clip to be deleted from the device. Token of the audio clip to be played or stopped. Optional token list of physical audio outputs. If the AudioOutputToken is not provided in the API request, the AudioOutputToken from the audio clip configuration will be used. If it is true, play the audio clip; if it is false, stop the ongoing audio clip. Optional RepeatCycles to be used for the current play operation. If RepeatCycles is not provided in the API request, the RepeatCycles specified in the audio clip configuration will be used for the current play operation. List of audio clips currently playing in the device. Unique token of the multicast audio decoder configuration. If not passed, device shall respond with all configurations. This message contains the list of multicast audio decoder configurations. This response contains the available MulticastAudioDecoderConfigurationOptions. If a multicast audio decoder configuration is specified, the options shall concern that particular configuration. Contains the modified multicast audio decoder configuration. The configuration shall exist in the device. Returns the capabilities of the media service. The result is returned in a typed answer. This operation creates a new media profile. A created profile created via this method may be deleted via the DeleteProfile method. Optionally Configurations can be assinged to the profile on creation. For details regarding profile assignement check also the method AddConfiguration. Retrieve the profile with the specified token or all defined media profiles.

• If no Type is provided the returned profiles shall contain no configuration information.
• If a single Type with value 'All' is provided the returned profiles shall include all associated configurations.
• Otherwise the requested list of configurations shall for each profile include the configurations present as Type.

This operation adds one or more Configurations to an existing media profile. If a configuration exists in the media profile, it will be replaced. A device shall support adding a compatible Configuration to a Profile containing a VideoSourceConfiguration and shall support streaming video data of such a profile.
Note that OSD elements must be added via the CreateOSD command. This operation removes the listed configurations from an existing media profile. If the media profile does not contain one of the listed configurations that item shall be ignored. This operation deletes a profile. Deletion of a profile is only possible for non-fixed profiles By default this operation lists all existing video source configurations for a device. Provide a profile token to list only configurations that are compatible with the profile. If a configuration token is provided only a single configuration will be returned. By default this operation lists all existing video encoder configurations for a device. Provide a profile token to list only configurations that are compatible with the profile. If a configuration token is provided only a single configuration will be returned. By default this operation lists all existing audio source configurations for a device. Provide a profile token to list only configurations that are compatible with the profile. If a configuration token is provided only a single configuration will be returned. By default this operation lists all existing audio encoder configurations for a device. Provide a profile token to list only configurations that are compatible with the profile. If a configuration token is provided only a single configuration will be returned. By default this operation lists all existing video analytics configurations for a device. Provide a profile token to list only configurations that are compatible with the profile. If a configuration token is provided only a single configuration will be returned. By default this operation lists all existing metadata configurations for a device. Provide a profile token to list only configurations that are compatible with the profile. If a configuration token is provided only a single configuration will be returned. By default this operation lists all existing audio output configurations for a device. Provide a profile token to list only configurations that are compatible with the profile. If a configuration token is provided only a single configuration will be returned. By default this operation lists all existing audio decoder configurations for a device. Provide a profile token to list only configurations that are compatible with the profile. If a configuration token is provided only a single configuration will be returned. This operation modifies a video source configuration. Running streams using this configuration may be immediately updated according to the new settings. The changes are not guaranteed to take effect unless the client requests a new stream URI and restarts any affected stream. NVC methods for changing a running stream are out of scope for this specification. This operation modifies a video encoder configuration. Running streams using this configuration may be immediately updated according to the new settings. The changes are not guaranteed to take effect unless the client requests a new stream URI and restarts any affected stream. NVC methods for changing a running stream are out of scope for this specification.
SessionTimeout is provided as a hint for keeping rtsp session by a device. If necessary the device may adapt parameter values for SessionTimeout elements without returning an error. For the time between keep alive calls the client shall adhere to the timeout value signaled via RTSP. This operation modifies an audio source configuration. Running streams using this configuration may be immediately updated according to the new settings. The changes are not guaranteed to take effect unless the client requests a new stream URI and restarts any affected stream NVC methods for changing a running stream are out of scope for this specification. This operation modifies an audio encoder configuration. Running streams using this configuration may be immediately updated according to the new settings. The changes are not guaranteed to take effect unless the client requests a new stream URI and restarts any affected streams. NVC methods for changing a running stream are out of scope for this specification. This operation modifies a metadata configuration. Running streams using this configuration may be updated immediately according to the new settings. The changes are not guaranteed to take effect unless the client requests a new stream URI and restarts any affected streams. NVC methods for changing a running stream are out of scope for this specification. This operation modifies an audio output configuration. This operation modifies an audio decoder configuration. This operation returns the available options (supported values and ranges for video source configuration parameters) when the video source parameters are reconfigured If a video source configuration is specified, the options shall concern that particular configuration. If a media profile is specified, the options shall be compatible with that media profile. This operation returns the available options (supported values and ranges for video encoder configuration parameters) when the video encoder parameters are reconfigured.
This response contains the available video encoder configuration options. If a video encoder configuration is specified, the options shall concern that particular configuration. If a media profile is specified, the options shall be compatible with that media profile. If no tokens are specified, the options shall be considered generic for the device. This operation returns the available options (supported values and ranges for audio source configuration parameters) when the audio source parameters are reconfigured. If an audio source configuration is specified, the options shall concern that particular configuration. If a media profile is specified, the options shall be compatible with that media profile. This operation returns the available options (supported values and ranges for audio encoder configuration parameters) when the audio encoder parameters are reconfigured. This operation returns the available options (supported values and ranges for metadata configuration parameters) for changing the metadata configuration. This operation returns the available options (supported values and ranges for audio output configuration parameters) for configuring an audio output. To retrieve the EQPresetList, a valid ConfigurationToken must be provided. If EQPreset is supported and isFrequencyDecibelEditable is signaled as true, the response shall include the FrequencyDecibelPair. This command list the audio decoding capabilities for a given profile and configuration of a device. This command is to configure Audio EQPreset. The GetVideoEncoderInstances command can be used to request the minimum number of guaranteed video encoder instances (applications) per Video Source Configuration. This operation requests a URI that can be used to initiate a live media stream using RTSP as the control protocol. The returned URI shall remain valid indefinitely even if the profile is changed.
Defined stream types are

• RtspUnicast RTSP streaming RTP as UDP Unicast.
• RtspMulticast RTSP streaming RTP as UDP Multicast.
• RtspsUnicast Secure RTSP streaming with SRTP as UDP Unicast.
• RtspsMulticast Secure RTSP streaming with SRTP as UDP Multicast.
• RTSP RTSP streaming RTP over TCP.
• RtspOverHttp Tunneling both the RTSP control channel and the RTP stream over HTTP or HTTPS.

If a multicast stream is requested at least one of VideoEncoder2Configuration, AudioEncoder2Configuration and MetadataConfiguration shall have a valid multicast setting.
For full compatibility with other ONVIF services a device should not generate Uris longer than 128 octets. This command starts multicast streaming using a specified media profile of a device. Streaming continues until StopMulticastStreaming is called for the same Profile. The streaming shall continue after a reboot of the device until a StopMulticastStreaming request is received. The multicast address, port and TTL are configured in the VideoEncoderConfiguration, AudioEncoderConfiguration and MetadataConfiguration respectively. This command stops multicast streaming using a specified media profile of a device Synchronization points allow clients to decode and correctly use all data after the synchronization point. For example, if a video stream is configured with a large I-frame distance and a client loses a single packet, the client does not display video until the next I-frame is transmitted. In such cases, the client can request a Synchronization Point which enforces the device to add an I-Frame as soon as possible. Clients can request Synchronization Points for profiles. The device shall add synchronization points for all streams associated with this profile. Similarly, a synchronization point is used to get an update on full PTZ or event status through the metadata stream. If a video stream is associated with the profile, an I-frame shall be added to this video stream. If a PTZ metadata stream is associated to the profile, the PTZ position shall be repeated within the metadata stream. A client uses the GetSnapshotUri command to obtain a JPEG snapshot from the device. The returned URI shall remain valid indefinitely even if the profile is changed. The URI can be used for acquiring a JPEG image through an HTTP GET operation. The image encoding will always be JPEG regardless of the encoding setting in the media profile. The Jpeg settings (like resolution or quality) may be taken from the profile if suitable. The provided image will be updated automatically and independent from calls to GetSnapshotUri. A device returns the information for current video source mode and settable video source modes of specified video source. A device that indicates a capability of VideoSourceModes shall support this command. SetVideoSourceMode changes the media profile structure relating to video source for the specified video source mode. A device that indicates a capability of VideoSourceModes shall support this command. The behavior after changing the mode is not defined in this specification. This operation lists existing OSD configurations for the device.

• If an OSD token is provided the device shall respond with the requested configuration or provide an error if it does not exist.
• In case only a video source configuration token is provided the device shall respond with all configurations that exist for the video source configuration.
• If no tokens are provided the device shall respond with all available OSD configurations.

Get the OSD Options. Set the OSD Create the OSD. Delete the OSD. This operation lists existing Mask configurations for the device.

• If an Mask token is provided the device shall respond with the requested configuration or provide an error if it does not exist.
• In case only a video source configuration token is provided the device shall respond with all configurations that exist for the video source configuration.
• If no tokens are provided the device shall respond with all available Mask configurations.

Get the Mask Options. Set the Mask Create the Mask. Delete the Mask. This operation gets the current WebRTC configuration for the device. This operation sets the WebRTC configuration for the device. This operation retrieves audio clip configurations from the device. If an audio clip token is provided, the device shall return the audio clip configuration associated with that token. If no token is provided, the device shall return all audio clip configurations that exist on the device. This operation adds audio clip configuration to the device and provides audio clip upload URI to the client. The response to the command includes an HTTP URL to which the audio clip may be uploaded within the expiry time. If the client is unable to upload the audio clip within the URL's expiry time, the associated audio clip configuration will be permanently removed from the device. This operation sends a text and its configuartion to device that supports TTS function, so that device could convert the text into an audio clip and play it according to audio clip Configuration and TTS Configuration. This operation modifies the existing audio clip configuration on the device. This operation deletes the audio clip configuration and the associated audio clip on the device. The audio clip should be de-associated from the event or schedule trigger if it was previously associated before this operation. This operation will fail if the device is playing the audio clip at the same time due to user operation, schedule, or event trigger. This operation plays or stops the ongoing audio clip on the device. This operation retrieves audio clips information which are playing currently in the device. This operation gets the list of multicast audio decoder configurations. This operation gets the available options for the MulticastAudioDecoder configuration. This operation sets the MulticastAudioDecoderConfiguration.