Quote:
Originally Posted by ayh20  Umm .... not quite what i meant Graham...
My assumption was that the images were captured on a high quality HD cameras (@HD resolution or higher) or cinema film formats (35mm ?), then edited/post production at native resolution. Therefore the limitations are in the capture/production end .... the transmission chain should then be completely transparent.
At the mpeg compression level, as you say, there are compromises that have to be made. It is perfectly possible to be lossless at this stage, but this requires silly bitrates. Compromises have to be made i know, but how can Sky get it right (the Gaza docu the other night was impressive) and the BBC quite so bad.
I want to see what the production team produced not the rubbish that the broadcaster transmitted. (any more than willing to pay extra for it ..  ) |
Ignoring audio 1920 x 1080 25fps source using 8 bits for red green and blue requires 1920 x 1080 x 24 x 25/1000 = 1244160 kbpps which is 155,520 kbytes/sec or about 150 Mb/sec. (thats the data transfer speed the TV has to shift data to a full HD display)
ie for truly lossless transmission without any compression about 130 times the current bitrate used by BBC HD