Doubters and cynics beware, video over the internet is becoming a reality. Not just webstreaming amateur videos and TV shows, but real, honest broadcast quality video can be transmitted via public internet.
How you ask? An excellent question. And certainly there are limitations but imagine scenarios where perhaps you show brief video clips from on a regular basis, where you can get a high quality, but not private internet connection and where there is no on air talk back from the studio. Maybe your morning shot of the freeway traffic or weather report backdrops or times when you want to send video content to another location for rebroadcast. Internet is a viable possibility using Fujitsu’s ARQ technology.
Sending video over public internet presents unique challenges over sending video in the private internet environment. Public internet is subject to variations in traffic volume, latency and changes in the routing of traffic, all of which can cause loss of video data and the dreaded frozen video, dropped frames or other intolerable quality problems. Overcoming those variations in public internet paths, Fujitsu developed Automatic RereQuest (ARQ), a proprietary function which can resend lost data packets and keep video running smoothly, even over public internet connections.
ARQ works in tandem with the commonly used Forward Error Correction (FEC) to keep data flowing accurately. What is the difference? FEC sends along a pattern with the data allowing the receiving side to reconstruct lost data packets. ARQ asks the sending side to resend packets not received. For maximum efficiency, use both technologies to ensure video quality.
You may still be shaking your head about using non-private IP links for data. To be sure, testing at various times of the day, peak and off-peak traffic times, and over a period of time is required to be certain that enough bandwidth will be consistently available and that your encoder/decoder settings are optimized for the link you have. If you are willing to have a little patience for the testing process though, you can have the benefits of an affordable and convenient video transmission link.
