Quote:
Originally Posted by Toto
And they need it, MPEG4 is better compression from a transmitting point of view, but it obviously has a negative impact on the picture quality as Stuart mentions.
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'it
obviously has a
negative impact on the picture
quality'
NO thats not right toto, its MPEG4/
AVC and thats far better than mpeg4/ASP at lower bitrates,Mpeg2 doesnt even begin to come close at these low bitrates, but you already know this!.
and the Decoder (FPGA ?,DSP)part of the box can obviously match the settings for the encoding part as regards levels decoding etc with ease, else why an industry matching pair, so thats not it.
they dont use liberate as the middleware do they ?, perhaps thats taking the cpu cycles, but then again it would'nt effect the decoding part.....
AVC has the lossless encoding , now it might not be using that option right now true, but its apparent that if they can make a realtime HD AVC encoding at 6mbit/s that looks perfectly fine to the the techs and they can, then its reasonable to assume that theres some tech problem with the current broadcasting setup
or the shop boy did something wrong when he set it up to show the punters.....
their able to get broadcast quality HD AVC down to the same bitrate as NTL use for the SD mpeg2 in some limited fashion now, and soon enough it will be good enough to ship to the headends, ask creative, i think he saw it at the industry show .....
if BT Vision is going something wrong than thats one thing,but the AVC tech is perfectly fine.....