# PTZ and Control Messages > Initial Implementation: **NewTek** > > Location: **Sent via SDK API calls, received as Metadata frames** ## `` Element Set zoom to an absolute value: `NDIlib_recv_ptz_zoom()` ```xml ``` #### `` Attributes | Attribute | Description | | --------- | ------------------------------------------------------------ | | zoom | Absolute value for zoom: 0.0 (zoomed in) to 1.0 (zoomed out) | ## `` Element Zoom at a particular speed: `NDIlib_recv_ptz_zoom_speed()` ```xml ``` #### `` Attributes | Attribute | Description | | ----------- | ------------------------------------------------------- | | zoom\_speed | Zoom speed: -1.0 (zoom outwards) to +1.0 (zoom inwards) | ## `` Element Set the pan and tilt to an absolute value: `NDIlib_recv_ptz_pan_tilt()` ```xml ``` #### `` Attributes | Attribute | Description | | --------- | ------------------------------------------------------------ | | pan | Pan location: -1.0 (left) to 0.0 (centered) to +1.0 (right) | | tilt | Tilt location: -1.0 (bottom) to 0.0 (centered) to +1.0 (top) | ## `` Element Pan and tilt at a particular speed: `NDIlib_recv_ptz_pan_tilt_speed()` ```xml ``` #### `` Attributes | Attribute | Description | | ----------- | --------------------------------------------------------------- | | pan\_speed | Pan speed: -1.0 (pan right) to 0.0 (stopped) to +1.0 (pan left) | | tilt\_speed | Tilt speed: -1.0 (tilt down) to 0.0 (stopped) to +1.0 (tilt up) | ## `` Element Set focus mode and distance: * `NDIlib_recv_ptz_auto_focus()` * `NDIlib_recv_ptz_focus()` * `NDIlib_recv_ptz_focus_speed()` ```xml ``` #### `` Attributes | Attribute | Description | | --------- | ------------------------------------------------------------------------------------------------------------- | | mode | Sets focus mode: "manual" or "auto" | | distance | Focus distance: 0.0 (infinity) to 1.0 (focused as close as possible). Optional, only valid when mode="manual" | ## `` Element Recall settings from a particular preset: `NDIlib_recv_ptz_recall_preset()` ```xml ``` #### `` Attributes | Attribute | Description | | --------- | ------------------------------------------------------------------------------------------------------------------------------ | | index | The preset index to recall: 0 to 99 | | speed | How fast to move to the new preset: 0.0 (slowest) to 1.0 (fastest). Optional, should default to 1.0 (fastest) if not specified | ## `` Element Store current settings to a particular preset: `NDIlib_recv_ptz_store_preset()` ```xml ``` #### `` Attributes | Attribute | Description | | --------- | ---------------------------------- | | index | The preset index to store: 0 to 99 | ## **`` Element** Sets the white balance: * `NDIlib_recv_ptz_white_balance_auto()` * `NDIlib_recv_ptz_white_balance_indoor()` * `NDIlib_recv_ptz_white_balance_outdoor()` * `NDIlib_recv_ptz_white_balance_oneshot()` * `NDIlib_recv_ptz_white_balance_manual()` ```xml ``` #### `` Attributes | Attribute | Description | | --------- | ----------------------------------------------------------------------------------------------------------------------------- | | mode | White balance mode:auto, indoor, outdoor, one\_shot, or manual one\_shot (one\_push?) locks the current white balance setting | | red | Manual red value: 0.0 (not red) to 1.0 (very red). Only present when mode="manual" | | blue | Manual blue value: 0.0 (not blue) to 1.0 (very blue). Only present when mode="manual" | ## `` Element Sets the exposure settings: * `NDIlib_recv_ptz_exposure_auto()` * `NDIlib_recv_ptz_exposure_manual()` * `NDIlib_recv_ptz_exposure_manual_v2()` ```xml ``` #### `` Attributes | Attribute | Description | | --------- | ---------------------------------------------------------------------- | | mode | Exposure mode: auto or manual | | value | Iris setting: 0.0 (dark) to 1.0 (light). Only valid when mode="manual" | | gain | Gain setting: 0.0 (dark) to 1.0 (light). Only valid when mode="manual" | | shutter | Shutter speed: 0.0 (slow) to 1.0 (fast). Only valid when mode="manual" | --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.ndi.video/all/developing-with-ndi/ndi-metadata/ptz-and-control-messages.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.