TECHNICAL
How WISI is Bringing Innovation to ABR Video Delivery As a leading manufacturer and technology supplier for Pay-TV operators, WISI is leading the charge for ABR receive innovation. To help operators support existing hospitality networks, we offer a way to reuse multiscreen video streams for legacy deployments, removing duplication. With the ABR receiver, operators can repurpose ABR video streams from multiscreen deployments and convert them to IP transport stream for IPTV services, or to analogue or QAM-based hospitality networks. The groundbreaking solution allows video operators to connect multiscreen Pay-TV services to the edge and maintain existing infrastructure investments at hospitality sites. With our solution, operators have options to output any type of format, IP, analogue or QAM, depending on site requirements.
Key applications for ABR receive: n Hosted video distribution n Hospitality n Off-net video delivery Optimising Live Video Delivery Over the Internet With SRT Another technology that operators should consider deploying in today’s increasingly IP-based and ever-evolving video landscape is SRT. SRT (Secure Reliable Transport) is a video transport protocol used to deliver high-quality, low-latency video across unpredictable networks. SRT optimises streaming performance across noisy or unpredictable networks while addressing security concerns and focusing on high performance video. It is designed to protect against jitter, packet loss, and bandwidth fluctuations to help ensure the best viewing experience. Video streaming over the internet can be unpredictable. Operators need a video delivery protocol that is reliable, secure, and efficient, while also maintaining exceptional video quality. A significant issue for live video streaming in particular is latency. Today’s viewers expect high- quality, low-latency video experiences. SRT uses a retransmission technology known as Adaptive Repeat reQuest (ARQ) to handle common errors when transmitting video and audio data over the internet, such as random bursts of lost packets. ARQ works by first establishing a two-way connection between the source and destination points. Each data packet is given a unique sequence number. The receiver uses this sequence to determine if all packets have been received correctly and in the right order. If packets are missing or contain errors, the receiver creates a list of these sequence numbers and automatically requests the sender to retransmit. In addition, SRT relies on encrypted streams and a caller/listener handshake concept to ensure easy firewall traversal. The handshaking process used by SRT respects and maintains existing corporate security policies by allowing outbound connections without requiring dangerous, permanent exterior ports to be opened in a firewall. SRT is successfully used by leading video content and service providers around the world for a wide range of applications, including remote content creation and
distribution, wholesale distribution, hospitality, live events and sports, satellite replacement for small headends, direct connections to broadcasters, and headend consolidation. Utilising SRT, operators can ensure secure video transport across unmanaged networks with low latency for these use cases. Market Drivers for SRT One of the key drivers for SRT is the growing demand for outstanding streaming quality. Today’s consumers expect a flawless streaming experience. Latency can be an issue. During a live sports event operators need to provide viewers with high- quality, low-latency video experiences. Research shows that subscriber loyalty and satisfaction are strongly linked to streaming quality. Nearly 30% of viewers 9 are likely to end a video after the first occurrence of buffering, which increases significantly to 66% after a second rebuffering. SRT helps optimise streaming performance across noisy or unpredictable networks, enabling operators to address streaming quality requirements. Another reason why operators are adopting SRT is to ensure secure delivery of video streams over unmanaged networks. Video delivery over the internet can be unpredictable. Since the internet is not a managed network, operators Nearly 30% of viewers are likely to end a video after the first occurrence of buffering, which increases
significantly to 66% after a second rebuffering.
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