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Re:Almost everything on computers is perceptually slower tha... by jaywalk on Thursday December 19, 2019 @10:36AM (#21835757)
While everything is usually on the cable (there are exceptions) the STB only has a limited number of tuners, which means it can't "see" everything at once. The channels that are nearby in number may or may not be on the same physical channel, which would mean the STB is effectively blind to them.

But even in boxes with multiple tuners (DVRs) your solution would require tying up at least three tuners (current channel plus one up and down) which would cut down the number of simultaneous recordings that are possible. I doubt many people would like that tradeoff.

However, the biggest issue is that most boxes simply don't have more than one MPEG decoder in them.

Re:Almost everything on computers is perceptually slower tha... by seanalltogether on Thursday December 19, 2019 @10:45AM (#21835851)
Actually that's a good point, my sky tv box lets me record 6 streams plus watch a channel at once, however i rarely have more then 1 or 2 recordings at a time, so on average i have +2-2 channels available to holder in buffer.