[opendtv] Re: BBC DTT HDTV trials
- From: Craig Birkmaier <craig@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Tue, 13 Feb 2007 13:44:28 -0500
At 6:26 PM -0500 2/12/07, Manfredi, Albert E wrote:
But the benefit of a 1080p display, IMO, is that it can deinterlace a
1080i transmission. I would not be surprised if deinterlaced 1080i, in a
1080p display, looks higher def than an upconverted 720p in such a
display. Any bets on that?
The odds are very strong that the 720P source would look better upconverted.
This would depend on the quality of the encoding of each source, and
obviously any pre-filtering on the 1080p source used to make it fit
into the emission channel.
The EBU did such tests with both at IBC and found that the 720P
source looked better across a range of expert viewers. The right
answer is to downconvert 1080P to 720P for emission coding.
Regards
Craig
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