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NewS
tream
User Guide and Technical Manual
Figure 24:
NewS
tream CNG Transport Stream Status Touchscreen
NewS
tream
Video Cellular Transmitter Data Usage
The monthly operating cost of a
NewS
tream
transmitter is entirely dependent upon
the consumption of wireless broadband data. Wireless service providers typically offer
monthly data packages with a maximum “use-it-or-lose-it” usage capped in gigabytes
[GB] before data overuse charges are implemented, usually in 1 GB increments.
A key attribute of H.264 AVC [MPEG-4 Part 10] encoding is that HD quality video can
be transmitted at less than half the data rate required by MPEG-2. While broadcast
video streaming quality is regarded more subjectively than classic contribution and
distribution standards, there are some basic guidelines that you can adopt to determine
the appropriate data rate required in a given situation.
The degree of video motion to be encoded directly impacts the upload data rate,
typically expressed in megabits per second [Mbps]. For example, low motion 29.97/30
fps [frames per second] video, often referred to as “talking head” video, requires a video
encoding data rate ranging between 1.0 - 3.0 Mbps, whereas fast motion video, such as
a sporting event, can require data rates as high as 8 Mbps, depending on the resolution
[e.g. 720p/1080i] selected. An average data rate of 3.0 Mbps provides approximately
30 hours of video transmission consuming about 40 GB of data. Encoding at 6.0 Mbps
consumes up to 80 GB of data, and at 8.0 Mbps, slightly more than 105 Mbps.
NewS
tream
transmits video using up to six wireless network services simultaneously.
The system is designed to level load or equally distribute the total amount of data being
transmitted [i.e. uploaded] provided that there is equal wireless network availability for
each of the modems. In this ideal case, the total data used is equally distributed across
each of the six modems. In reality, network connection accessibility varies from one
venue to another and is also subject to its availability from a loading perspective.
