Quote:
Originally Posted by spiderplant
The answer is "it varies". But I think it's all digital these days.
Advanced codecs take longer to encode because they work on many video frames in parallel. The allows them to find common patterns across mutiple frames, and so increase the compression. But the more frames they scan, the more they have to buffer, so the delay increases. It's unlikely to ever get quicker, as this would reduce the compression or compromise picture quality.
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Thanks for info.
Makes perfect sense. Key frames and only the differences between frames simplifies what happens a lot and knowing how encoding software can make multiple passes of the same data to get best quality, it's amazing how good some of the on the fly stuff is.
As for fitting more channels in freeview, they can just lower the bitrate of channels to fit more in. Some paid channels in the past looked terrible because they compressed it way too much.
The milliseconds between trading exchanges was a big thing due to the money involved. I vaguely remember a trading scam that relied on the small latency delays of connections between exchanges some years back. Maybe im thinking of some Ocean eleven movie instead
