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However, there are peripheral effects. ATSC 3.0 includes features for auxiliary streams, for example. This could be data to make clickable icons as part of the program, or provide multiple selectable camera angles in sports. The question then becomes if the streaming services will carry any of the ancillary data, not if they will carry the main program or not, which will still be determined by economic/profit considerations, just as today a cable system may carry only a station's main program and not its subchannels. ATSC 3.0 also has very flexible trade-offs of data rate vs. signal robustness in the broadcast signal, so a single transmitter can emit multiple programs (like ATSC 1.0 does) except that the video resolution and signal robustness may be very different for a stream intended for mobile reception vs. an ultra high definition stream intended for use only with a good antenna. Again, when stations are broadcasting multiple streams, a streaming service may carry only certain ones, and might, for example, down-res ultra HD to regular HD. Since the interface from the streaming service to your streaming box is QAM, carrying internet protocol data, and the interface from the box to your TV is a HDMI cable, neither of these is affected at all by the signal format that is broadcast through the air. What gets transferred from over-the-air stations to streaming services will continue to be determined by business considerations, not technical ones. |
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Jeff, WB8NHV Collecting, restoring and enjoying vintage Zenith radios since 2002 Zenith. Gone, but not forgotten. Last edited by Jeffhs; 12-16-2017 at 02:03 PM. |
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