[opendtv] Re: Twenty comments; Re: Re: Obama Asks Congress to Delay DTV Transition

  • From: Tom Barry <trbarry@xxxxxxxxxxx>
  • To: opendtv@xxxxxxxxxxxxx
  • Date: Sat, 10 Jan 2009 12:31:58 -0500

My bet would be on the standards conversion. But I don't know how they do it. Is automatic frame rate conversion smart enough now to automatically recognize telecined material and first convert it to 24p and then do the speedup to 25p?


Or does it just deinterlace everything and then try interpolative methods? This would likely end up much softer.

- Tom


John Shutt wrote:
Not to mention the process of standards conversion from CBS's 1080i29.97 to either 1080i25 or 720p50. Are they taking master HD tapes and running them through a standards converter? Are they taking MPEG-2 files at emission compression rate for standards conversion through something like Flip Factory?

Then there is the fact that most HD prime time dramas are shot on film (or video with Filmlook(tm) processing) and are inherently softer than images shot with HD video cameras such as local news.

John

----- Original Message ----- From: "Craig Birkmaier" <craig@xxxxxxxxx>

At 8:26 PM +1300 1/10/09, Barry Wilkins wrote:
CSI and other dramas from the US although HD, are slightly less sharp. I do not know what is causing this but it is very consistent with the country of origin.

Interlace and the excessive use of compression

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.




----------------------------------------------------------------------
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: