[opendtv] Re: 4k @ 60 fps encoded into 15 Mbps using HEVC
- From: Craig Birkmaier <craig@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Fri, 26 Oct 2012 09:22:14 -0400
At 2:56 PM -0700 10/24/12, Ron Economos wrote:
Broadcasters are folks that have been in the business for many
years and realize that there is 60+ years of interlace content
floating around. They are all for progressive content, but know
damn well that a compression standard that ignores interlace
will be crippled (at least for their application).
Smartphone kids aren't concerned with broadcast. It's just
some dinosaur to be ignored until it dies off.
Ron
Thanls for the peek behind the curtain. The view from a production
brewer is not the same as I had when I was attending MPEG meetings
and working with all of the encoding vendors.
I continue to be disturbed by the notion that new standards should be
backward compatible to interlace. Concatenating two compression
schemes has never been a good idea, especially given the problems
dealing with "missing information." In the early '90s we tried to
educate broadcasters that the best approach was to invest in
professional quality de-interlacing equipment, then encode everything
in progressive formats. At the time, de-interlacing science was
evolving along a similar path to compression standards - that is, the
technology was evolving quickly as more MIPs could be dedicated to
real time processing.
Ironically, the need for de-interlacing fell upon cheap chips in HD
receivers to refresh progressive displays, rather than high quality
de-interlacing at the station before encoding and broadcast.
The "smartphone kids" understood the realities of working in an all
progressive environment - clearly they got it right.
Today it seems absurd to be talking about encoding of interlaced
sources, when de-interlacing technology is widely available and
substantially better than it was two decades ago...
It's hard to believe that we've been arguing about this for two decades...
;-)
Yesterday, during Apple's fourth quarter earning conference call Tim
Cook spent several minutes talking about the broadcast organizations,
including the BBC, that are capturing stories using an iPhone.
Time for another beer!
Regards
Craig
----------------------------------------------------------------------
You can UNSUBSCRIBE from the OpenDTV list in two ways:
- Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org
- By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word
unsubscribe in the subject line.
Other related posts: