[opendtv] Re: 70th Anniversary Blu-ray and standard DVDs of the Wizard of Oz

  • From: "Stessen, Jeroen" <jeroen.stessen@xxxxxxxxxxx>
  • To: "opendtv@xxxxxxxxxxxxx" <opendtv@xxxxxxxxxxxxx>
  • Date: Thu, 1 Oct 2009 16:50:19 +0200

Hello,

Cliff Benham:
> Bert, it is only a 4:3 monitor, so it doesn't have a switch to change between 
> 4:3 and 16:9.

I'm with Bert on this one.
If I understand correctly, you have connected a 4:3 (computer) monitor
to the HDTV output of a BluRay player ? But this is wrong, an HDTV
display is implicitly 16:9 (or 21:9). There are no 4:3 HDTV formats in
the ATSC table 3, therefore there are no such signals or displays.
You can not blame a BluRay player for sending the "wrong" signal to a
display that is not supposed to exist.

A 4:3 movie is always pillarboxed to a 16:9 signal for display on a 16:9
display. There exists no output mode that is compatible with 4:3 displays.
You should not connect 4:3 computer monitors to HDTV signals, just because
they can handle the line and frame rates. It is an undefined use case.

Groeten,
-- Jeroen

  Jeroen H. Stessen
  Specialist Picture Quality

  Philips Consumer Lifestyle
  Advanced Technology  (Eindhoven)
  High Tech Campus 37 - room 8.042
  5656 AE Eindhoven - Nederland

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