Signal Contribution to Headends
The head end services can be divided as follows:
• Contribution solutions
• Encoding and transcoding solutions
• Streaming solutions
There are two kinds of contribution solutions – occasional and permanent. Occasional means receiving, decoding and descrambling media produced in the place of the event. The media is transferred via satellites or fibre networks. It is usually used to broadcast live in the TV-channels that we play out or on the online service portals that facilitate streaming. For example, fashion shows, concerts, sports events, etc. Permanent TV-channel reception from different distribution platforms enables its re-transmission by local service providers (e.g. PANG). Permanent receiving is also used as an input to localise global TV-channels.
Encoding and transcoding solutions
Encoding is the compression of digital serial video and audio signals synchronously into a format and capacity which is suitable for using in DVB and IPTV networks that offer television service. Most widely used video compression standards that we use are MPEG-2, MPEG-4 part10 or JPEG2000. When it comes to transcoding then the digital television programme decoding from its initial format and encoding to another format is usually done within one device or system. All processes are conducted in real time and the delay varies from a couple of frames to a couple of seconds.
Media is becoming more personal every day and people need more access to TV-channels and the content of media via public internet. This is why we are offering to our clients the technical aptitude to form suitable streaming versions over http protocol for a multiscreen environment over the public internet. The entire spectrum of different resolutions and quality levels enables to use wide-spread formats like HLS, rtmp, RTSP, MS Smooth Streaming, MPEG-dash, etc. The most common applications for streaming formats used by our clients are web television, mobile television and OTT.