![]() ![]() I can start a video on YouTube, and my start time doesn’t need to dictate the start time for another viewer. ![]() Additionally, one viewer’s start time is asynchronous to another viewer’s start time. Sub-one second latency: Delays under 1 secondįor the vast amount of media watched online, latency is inconsequential, as most media is archived and served by request, such as VOD content.Ultra-low latency: Delays of up to 3 seconds.Low-latency: Delays of up to 10–12 seconds.For the purposes of this article, I’ll use the following definitions: When we use the term “real-time streaming delivery,” we typically refer to latency that’s 500 ms or lower and could be within the range of 100 ms–300 ms. The longer the delay in the transmission, the larger the latency will be. As a quick example, if I send a picture to a friend on my phone at 12:00:01 PM and my friend receives the picture at 12:00:03 PM, that’s a latency of 2 seconds. Latency with streaming video, audio, and data is the measured interval between the moment a streamer sends a video and its arrival time to the receiver. Latency BasicsĪt Streaming Media conferences, speakers and panelists often joke that we’re still talking about latency decades after the start of the video streaming revolution that’s been in full swing since the 1990s. I’ll start with a discussion of the basics of latency before moving on to the testing results and analysis. In this article, I examine low-latency services provided by streaming CDNs, removing actual vendor names and making conclusions based on delivery method. ![]()
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