In the digital TV era it becomes significantly important to use and maintain content in the compressed domain and to avoid recompression where possible. Another consideration, especially for multi-channel operations is to reduce the cost per channel by eliminating as many devices on the chain as reasonable.
AirBox Streamer was designed specifically with this task in mind. It's an all-in-one playout automation, server and DVB/ATSC encoder in a single unit. It comes configured with a UDP streaming port, ready for DVB/ATSC transmission.
A "traditional" DVB/ATSC transmission looks like this:
- Video sources (such as video servers, VTRs, live cams, etc.) all go into a vision mixer (or matrix switcher) through SDI or analogue video signal;
- In the vision mixer or downstream keyer there might be graphics insertion;
- There can also be logo insertion by a dedicated logo inserter (SDI or analogue);
- The resulting SDI or analogue video signal is then fed into a DVB/ATSC encoder with ASI outputs (e.g. MPEG2 TS at 3-6 Mbit/sec);
- This ASI signal is then fed into a DVB multiplexer which assigns it a Program ID and includes it into the total bouquet of other DVB programs;
- Its ASI output is then sent to the satellite.
With the direct AirBox DVB/ATSC playout you can now achieve a different scheme: AirBox DVB/ATSC output is directly supplied to a DVB multiplexer, thus avoiding the usage of a costly DVB encoder ($5K - $20K range).
The following considerations need to be made when discussing this approach:
AirBox streamer sends to its UDP output a recompressed video stream. The main advantages of this approach are that the entire output stream has the same selectable and unified bitrate, any graphics can be inserted (logos, subtitles, TitleBox, etc.), output compression type can be selected (e.g. MPEG2, H.264/AVC, WMV/VC-1 or H.265/HEVC).
Typical application examples:
- UDP streaming - video-on-demand projects, where the VOD operator needs a multi-channel playout system with a number of MPEG2 or H.264 streams to be sent over a regular computer network to a number of recipients;
- UDP streaming - feed PlayBox DVB Muxer or a third-party multiplexer;
- UDP streaming - feed remotely located set-top boxes with video;
For price inquiries, please contact your local PlayBox Technology office.