Ultra Low Latency
Smart-telecaster Zao-SH
0.04 seconds latency
Changing the game in live video transmission
Zao-SH
Ultra Low Latency Mobile Encoder

The Zao-SH is a small mobile encoder that can live stream video from a remote location back to any destination. But with an incredible glass-to-glass latency of only 0,04s (40ms) over LAN, or 0,065s (65ms) over 4G.

The Zao-SH is an H.265 HEVC encoder that can be used in a variety of video contribution scenarios. From broadcast applications, such as news gathering, to public safety, law enforcement and military applications, the Zao-SH can be utilized to send an encrypted live stream from a broadcast or surveillance camera, drone, vehicle, body cam or helicopter.

Smart-telecaster Zao-SH is a 5G compatible ultra-low latency live video transmitter

It is equipped with next-generation transmission technology that reduces the glass to glass latency to 0.04 seconds (40ms) or less. The latency in live video transmission has been an important concern but the Zao-SH is able to transmit live video signal to/from remote areas in almost real time.

About

The Zao-SH can send a fully encrypted live stream, but simultaneously a return data feed can be sent from the destination back to the Zao-SH, for example to control a PTZ camera or to remotely control a drone gimbal.

The Zao-SH can live stream reliably over multiple bonded 4G SIM cards from different network providers, and /or can be utilized with a LAN connector.

At the receiving end, a Linux based software decoder will provide a video output of the live video. End to end latency starts at a remarkable 0,04s.

Understanding what’s included in glass to glass latency
Explanation of each part:

Shoot
The period from when the light enters the lens of the camera until video data is on the output of the SDI/HDMI terminal on the camera

Capture
The period from capturing video data from SDI/HDMI and performing color space conversion until it is input to the encoder

Encode
The encoding (compression) time

Transfer
The period in which compressed data is extracted from the encoder and divided into communication packets for multilink transmission/reception. Includes time for error correction and packet sorting between each connection

Decode
The decoding (uncompression) time

AV Sync
The time until adjusting audio and video timing and outputting to SDI/HDMI

Display
The period from SDI/HDMI output of the receiver to display the video on monitor (monitor-dependent part)

Function / Feature
1. Very short delay / RASCOW2

Ultra Low Latency
In order to solve the delay problem that occurs during simple transmission, Soliton developed RASCOW2, which is the second version of RASCOW (Real-time Auto Speed ​​Control based On Waterway-model) Solitons’s original codec management/communication protocol. RASCOW2  makes the encoding procedure faster while controlling all transmission settings faster and more efficiently. This feature succeeded in significantly reducing the delay associated with compression.

2. Remote Control Function

Remote driving or remote operation

With almost zero latency, it is now possible to remotely control a car or construction equipment connected to Zao-SH in a remote location. Until now, the delay on live control transmission systems was too large and it was difficult to perform remote operations safely with a live video stream. With the ultra-low latency Zao-SH, it is possible to control machinery effectively with a live video stream that is in almost real time from a remote location.

3. World's lightest

Mobile encoder
It is a palm-sized ultra-compact unit weighing 350g. It operates for approximately 60 minutes with the built-in battery and an additional 4 hours continuous operation with an external battery.

4. Stable and high speed

Multilink Bonding
Mobile networks of different cellular carriers can be bonded into one network to significantly increase bandwidth and stabilize the communication speed.

5. High compression

H.265/HEVC
Equipped with a highly efficient HEVC/H.265 hardware encoder, when compared to a traditional H.264 codec, it can transmit video with almost twice more efficiency.

Configuration
Basic configuration

Connect the video camera to the Zao-SH body and send the video directly to the receiver via mobile network or wired LAN.

Remote control configuration

Control signals from the controller connected to the receiver are sent to the Zao-SH main unit and used to control a car or any type of machine.

Specifications Zao - SH
Zao-SH Specifications
• Utilizes RASCOW2 for optimization of video quality based on available bandwidth
  • New Uplink protocol updated from RASCOW for better performance
  • Multilink and Lower Latency
  • Fault tolerance mode – Lower Latency, but requires bandwidth
  • Load balancing mode – Slightly Longer Latency, requires less bandwidth
• Ultra Low Latency
  • Glass to Glass 40ms latency at minimum
• Encrypted live streaming over multiple bonded 4g SIM cards and /or LAN port
• Support Serial Tunneling - return feed for serial control eg PTZ or drone gimbal
•Zao View
  • Newly Linux based decoder
  • 1 Channel Receiver /Planning for 4 Channel
  • Required Ubuntu workstation:
    • HP Z4G4 + NVIDIA RTX4000 (+BMD Decklink Pro 8K)
  • Point to Point connection (no cloud subscription required)
  • Decoder must have fixed IP address
  • UDP port :TBD (current version is same as Zao-S)
Ultra Low Latency Performance
Serial Control
  • Support Serial Tunneling
  • Same implementation as Zao-S and HDView
  • Remote control use case

PTZ Camera

Drone Gimbal

Remote Driving (Actuator for connected car)

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