Full Steam Ahead for Haivision's SRT-Optimized HEVC

HEVC was perhaps the hottest topic at this year's IBC show in September, 但是，当大多数人试图展示 4K HEVC在受控环境下， Haivision 采取了不同的策略. The company showed off its HEVC encoding delivered via Haivision's proprietary Secure Reliable Transport (SRT) protocol—sent over the public internet from a hotel close to the conference venue.

SRT, 目前正在海视科技的工程实验室HaiGear进行测试, is a transport technology that addresses the challenges associated with reliable transport of content across the unpredictable open internet and provides error correction, AES加密, 和安全. It's based on an aggregation of technology used in the company's LAN-based Furnace IP video-distribution system and its KulaByte live streaming encoder/transcoder, according to Haivision chief marketing officer Peter Maag.

“The concept behind it is to incorporate network health and network characteristics to dynamically adjust the end point and deliver the optimum video quality over unpredictable networks,马格说。. “Now that we've created that technology as a model to use in our ecosystem, 我们将把它推向市场.”

在最初的实施中, Havision’s encoders will feature SRT technology to allow for transport of high-quality, 跨互联网连接的低延迟视频. The first solutions to include it will be the Makito X series of hardware H.264 video encoders and decoders designed for point to point low latency transmission, and KulaByte.

“Broadcast companies have been performing forward error correction for years, but what we are talking about is really taking ownership of the media stream end to end, 从编码器到解码器/播放器设备, and then tuning the workflow to eliminate any abberations in the final package,马格说。. “This end-to-end workflow is incredibly unique on the market and Haivision as a technology provider is in a unique position to bring this forward.

“HEVC squeezes the most from the network—greater bandwidth efficiencies and video quality—while SRT tames the transport of that content,马格说。. “Combined, these new technologies present a quantum improvement for video transport. 此外, SRT will provide a critical framework for all internet transmissions in Haivision’s end-to-end ecosystem of video solutions. As HEVC is expected to provide higher image quality over constricted networks, SRT can enhance this application by optimizing stream performance over all network types.”

HaiGear has been active with the standard and has demonstrated live baseband HD HEVC/H.265编码和实时ip到ip高清HEVC/H.264年转码. 视频回程挑战, combining HEVC encoding and transcoding is essential to maximize video quality and to assure stream ubiquity.

HaiGear's demonstration of the technology combination at the IBC show in September involved a live recording from an Amsterdam hotel room transmitted direct to the Haivision booth not only over the hotel intranet but also over the IBC's highly conjested exhibition floor network. The latency of the 720p video was about 200 milliseconds.

“That really showed the power of the technology in an end-to-end workflow and was an amazing showcase for HEVC encoding,马克·西蒙科夫斯基说, 海视科技的核心技术经理. “We coupled HEVC with SRT to transport video over a dirty public network. That presented massive challenges because typically over such a network you would lose packets and encounter severe latency, 所以你必须解决这个问题. We have implemented all that into the SRT protocol, adding security and the ability to feedback to the decoder for adjustments. 这真是一个革命性的演示.

“Most attention has been paid to the power of HEVC to decode 4K, but since we focus a lot on enterprise video we understand that people across corporate, 教育, government or military organisations value the ability to squeeze the most of out of contribution links,cymonkowski说. "HEVC offers the market an incremental quality for a given bandwidth which they can now maximise with application of SRT.

“It's likely we'll see SRT come out as a higher performance source encoder as well as enabling point-to-point connections.”