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Ultra Low Latency: What It is & Why It Important

Ultra Low Latency: What It is & Why It Important

Nowadays, the world is moving rapidly, with everyone trying to get the fastest possible service for everything. It can be about information that can make or break a deal or gaming, where split-second decisions can determine the outcome. All of that has increased the importance of ultra low latency to new heights. This article will discuss what ultra-low latency is, its importance, its uses, and how to achieve it in detail.

What Is Ultra Low Latency

Latency or delay is the time it takes for a data transmission request between two systems to complete. In simple words, it is the total time when one system initiates a request and until it receives the corresponding data. It is also referred to as time delay or lag time.

Thus, the ultra-low latency is the shortest possible time for a data request to complete between two systems. In other words, it is the shortest possible time for data to travel from one point to another in a system. The concept of ultra-low latency is popular and highly important in fields where real-time communication needs to be as fast and precise as possible.

How Important is Ultra Low Latency?

It is essential in many fields, especially where real-time data processing and transmission are vital. Even a slight delay or latency can have significant consequences in these contexts. Here are a few of the reasons that answer the question of whether ultra-low latency is good and how important it is:

  • Real-Time Content: It is crucial for real-time content such as live streaming, online gaming, and video conferencing, where delays can significantly impact the user experience. For example, in online gaming, high latency can cause input lag, resulting in delayed or unresponsive actions.
  • Better Content Synchronization: Low latency enables better audio and video content synchronization. It ensures that the two are closely aligned and provide a seamless and immersive experience for the user. That makes it essential for video calls where even a small delay between video and audio can ruin the whole experience.
  • Less Buffering: If your service offers ultra-low latency, it can reduce buffering in streaming services, leading to smoother and uninterrupted playback. Less buffering is highly important for apps that deal with live event broadcasts like sports. The interruptions can detract users from the event’s excitement, while ultra-low latency ensures quick and efficient content delivery.
  • Fewer Pauses: With ultra-low latency, there are fewer pauses or delays in content delivery, resulting in a more seamless and natural user experience. It can enhance the effectiveness of communication and collaboration in applications such as video conferencing and live streaming. Moreover, it ensures content is smooth and continuous without sudden pauses or delays.
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Who Needs Ultra-Low Latency?

After discussing the importance of ultra-low latency, it is also important to look at various fields where it is essential. The ultra-low latency is essential in many fields, from financial trading to live streaming and virtual reality. Below are a few of the fields where ultra-low latency is extremely important:

1. Online Games

Ultra-low latency is highly important in online gaming. These games require a real-time response to player inputs to ensure smooth and enjoyable gameplay. It is especially an essential factor in MMO games. Any latency or delay can result in a poor gaming experience.

2. Live Streaming

When live streaming events such as sports or concerts, require low latency to ensure that viewers receive the video and audio feed in near real-time. Low-level latency is also important during an interactive live stream to ensure that viewers and streamers are able to interact in real time.

3. Telemedicine

A core part of any telemedicine app or service is the ensured ultra-low latency during the interactions between patients and health care providers. The low latency helps create a smooth and lag-free session where patients can discuss their ailments without issues.

4. Financial Trading

In financial trading, ultra-low latency is considered extremely important when it comes to high-frequency trading. Here, a delay of even one second can make or break the deal. Thus, low latency is crucial for financial firms to execute trades quickly and gain a competitive advantage.

5. Chatting Applications

One field where latency is a deal breaker for users is when using chatting or social communication apps. The ultra-low latency is important for all text, voice, and video chatting applications. Moreover, it allows users to have a seamless and lag-free chatting experience.

How to Achieve Ultra-Low Latency Streaming?

Achieving ultra-low latency streaming requires a combination of factors, including a robust streaming infrastructure, optimized video encoding, and efficient network connectivity. Given below are some important tips for achieving ultra-low latency streaming:

Adaptive Bitrate Streaming (ABR)

Another essential factor is using adaptive bitrate streaming. It allows seamless streaming at different bitrates based on the available network bandwidth. This can help reduce buffering and minimize latency, especially when network connectivity fluctuates.

Content Delivery Network (CDN)

You should try using content delivery networks (CDNs) to stream the data whenever possible. CDNs are distributed servers worldwide that can help reduce latency by caching content closer to the end user. It results in faster content delivery, especially for users far from the source server.

Optimized Video Encoding

Using efficient video codecs such as H.264 or H.265 can also help you achieve ultra-low video streaming latency. The latency can be further reduced by optimizing encoding settings. Lower encoding latency settings such as “fast” or “ultrafast” presets are commonly used to minimize encoding delay in live streaming services.

Low-Latency Protocols

A common recommendation is to use low-latency protocols when trying to achieve ultra-low latency. These protocols include WebRTC or Low-Latency HLS (LL-HLS), as they can significantly reduce streaming latency. It is because they work by minimizing buffering and providing real-time streaming with low latency.

Optimal Network Connectivity

It is also essential to optimize network connectivity. To optimize network connectivity, you can reduce the number of network hops, use a high-speed connection, and minimize data loss during data transmission.

High-Performance Media Servers

Lastly, using high-performance media servers also goes a long way in achieving ultra-low latency streaming. These servers are usually optimized for low-latency streaming and work on low-latency principles. That’s why you should use a reliable media server for high-performance streaming which can help minimize the latency.

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Top 3 Ultra Low Latency Video Streaming Solutions

Want to find the best video streaming solutions that guarantee ultra-low latency video streaming? There are many great choices available online for low-latency video streaming solutions. Below, we have chosen the top three solutions for you:

1. ZEGOCLOUD Live Streaming API & SDK

When it comes to the best live video streaming solution with ultra-low latency, ZEGOCLOUD Live Streaming API & SDK tops the chart. It offers an ultra-low latency of up to 600ms for interactive live streaming. This less than 1-second latency ensures perfect synchronization between audience and host, enhancing live streaming to new heights.

ZEGOCLOUD Live Streaming API and SDK support various features such as real-time audio and video encoding, decoding, recording, and playback. Moreover, it also offers features like face beautification, virtual gifts, real-time chat, and multi-person interaction. During standard live streaming, it supports over 10 million concurrent viewers for a single stream.

2. Agora Live Streaming SDK

ultra low latency

Agora Live Streaming SDK provides a live streaming solution with ultra-low latency developed by With Agora Live Streaming SDK, developers can create live streaming applications that support features such as multi-party video conferencing, real-time messaging, screen sharing, and recording. Its standard version offers latency between 1500ms to 200ms.

If you get the premium version, the latency goes down to 800ms. The other features offered by Agora Live Streaming SDK include co-hosting, dual video streams, screen sharing, and recording.

3. Livery Low Latency Live Streaming

ultra low latency video streaming

Livery also offers a great live video streaming solution with ultra-low latency. It offers a latency of fewer than 3 seconds, ensuring all viewers can see the content in real-time. Moreover, it supports seamless integration of devices which means viewers see the same frame and shot regardless of the device.

There are also many interactive widgets to enhance the live video streaming experience. Additionally, it allows users to stream for hours at ultra-HD quality. The live streaming is also recorded for viewers who missed the live event.


In summary, ultra-low latency has become increasingly important in live streaming. With the rise of online events and remote collaboration, everyone is looking for reliable and efficient video solutions. In this regard, ZEGOCLOUD Live Streaming API & SDK stands out as an excellent choice. Its advanced technology and customizable features offer a seamless and responsive streaming experience that can meet any organization’s or individual’s needs.

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