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      Monitor and Image
      • 20 Dec 2023
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      Monitor and Image

      • Updated on 20 Dec 2023
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      Article Summary

      MJPEG and RTSP are the primary monitoring stream types discussed in this chapter. 

      MJPEG, or Motion JPEG, is a video compression format that uses JPEG images for each video frame. Akuvox door phones display live streams on the web interface and capture monitoring screenshots in MJPEG format. Settings related to MJPEG determine video quality and the on/off status of the live stream function.

      RTSP stands for Real Time Streaming Protocol. It can be used to stream video and audio from the third party cameras to the door phone. You can add a camera’s stream by adding its URL.

      ONVIF is Open Network Video Interface Forum. It enables the door phone to scan and discover cameras or intercom devices with activated ONVIF functions. Live streams obtained through ONVIF are essentially in RTSP format.

      RTSP Stream Monitoring

      You can use RTSP to watch a live video stream from other intercom devices on the door phone.

      RTSP Basic Setting

      Navigate to the web Intercom > RTSP > RTSP Basic interface.

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      Parameter Set-up:

      • RTSP Authorization Enabled: when enabled, you are required to select RTSP Authentication Mode and enter RTSP username and password for authentication.

      • RTSP Authentication Mode: select RTSP authentication type between Basic and Digest.

      RTSP Stream Setting

      The RTSP stream can use either H.264 or Mjpeg as the video codec. If you choose H.264, you can also adjust the video resolution, bitrate, and other settings.

      Navigate to the web Intercom > RTSP > RTSP Stream interface.

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      Parameter Set-up：

      • Video Enabled: After enabling RTSP feature, the video RTSP is enabled by default and cannot be modified.

      • 2nd Video Enabled: Akuvox door phones support 2 RTSP streams, you can enable the second one.

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      Parameter Set-up:

      • Video Resolution: select video resolutions among five options: CIF, VGA, 4CIF, 720P, 1080P. The default video resolution is 720P, and the video from the door phone might not be able to be shown in the indoor monitor if the resolution is set higher than 720P.

      • Video Framerate: 30fps is the default video frame rate.

      • Video Bitrate: select video bitrate among six options: 64 kbps, 128kbps, 256kbps, 512 kbps, 1024 kbps, 2048 kbps according to the network environment. The default video bitrate is 2048 kpbs.

      • 2nd Video Resolution: select the video resolution for the second video stream channel. The default is VGA.

      • 2nd Video Framerate: select the video framerate for the second video stream channel. The default is 30 fps.

      • 2nd Video Bitrate: select video bitrate among six options: 64 kbps, 128kbps, 256kbps, 512 kbps, 1024 kbps, 2048 kbps according to the network environment. The default video bitrate is 512 kpbs.

      NACK

      Negative Acknowledgment（NACK）indicates a failure or error in data transmission or processing. It is used to request retransmission or signal the failure to the sender for ensuring data integrity.

      To enable NACK, navigate to the web Phone > Call Feature > Others interface.

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      Parameter Set-up:

      • NACK Enabled: It can be used to prevent losing data packet in the weak network environment when discontinued and mosaic video image occurred.

      MJPEG Image Capturing

      You can take a monitoring image in Mjpeg format with the door phone. To do this, you need to turn on the Mjpeg function and choose the image quality.

      You can enable the Mjpeg function on the Intercom > RTSP > RTSP Basic and set the image quality on the web Intercom > RTSP > MJPEG Video Parameters interface.

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      Parameter Set-up:

      • Video Resolution: select video resolutions among five options: CIF, VGA, 4CIF, 720P, 1080P. The default video resolution is VGA, and the video from the door phone might not be able to be shown in the indoor monitor if the resolution is set higher than VGA.

      ONVIF

      You can access the real-time video from the door phone camera using the Akuvox indoor monitor or other third-party devices like Network Video Recorder(NVR). Enabling and setting up the ONVIF function on the door phone will allow its video to be visible on other devices.

      Navigate to the web Intercom > ONVIF interface.

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      Parameter Set-up:

      • Discoverable: when enabled, the video from the door phone camera can be searched by other devices.

      • Password: customize the password for authentication. The default is admin.

      After the setting is complete, you can enter the ONVIF URL on the third party device to view the video stream.
      The example format is: http://IP address:80/onvif/device_service.

      Live Stream

      There are two ways to check the real-time video from the door phone. One is to go to the device web interface and view the video there. The other is to enter the correct URL on the web browser and access the video directly.

      Navigate to the web Intercom > Live Stream interface.

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