On 28 April 2016 at 10:41, Dave Liquorice <[email protected]> wrote: > > On Thu, 28 Apr 2016 03:08:38 +0300, Vangelis forthnet wrote: > > >> In addition a high bit-rate (8000kbps) 1920x1080, interlaced at 25fps, > >> full HD encode is generated, but has not yet been made available. > > > > but it has not yet been released publicly... > > At ca. 8Mps, those will be really huge files! > > 3.2 GB/hour roughly. The current 2.5 Mbps (ish) uses about 1 GB/hr. > > > NB hvfhd DOES NOT OFFER HIGHER RESOLUTION (CLARITY), only doubled > > framerate (25FPS x2), which results in smoother scenes where motion is > > involved! > > How does repeating frames improve smoothness of movement? Or does this > encode upscale each field(*) and encode that to increase the temporal > resolution? > > (*) If good ole 25 frames/50 fields per second has any relevance in the > digital world.
The BBC could well have non-interlaced 50 frames/s master copies, and for when they don't there are de-interlacing algorithms which can give smooth 50 fields/s output from interlaced 25 frames/s video. (I believe MPlayer has some.) Dave _______________________________________________ get_iplayer mailing list [email protected] http://lists.infradead.org/mailman/listinfo/get_iplayer
