[opendtv] Re: 4:3 transmissions of syndicated programming
- From: "John Willkie" <johnwillkie@xxxxxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Tue, 4 Mar 2008 14:06:38 -0800
You said that -- not excerpted here -- AFD and pan/scan - were redundant to
sar and dar.
Did I get confused about that? I hope not; it's false.
And, you are still using confusing terms. Does "video stream" mean the
"coded video frame" or the "active video portion of the coded video frame?"
DAR will only tell you about the "coded video frame"; AFD and pan/scan --
bar data (pick one) are useful in telling you what portion of that coded
video frame contains active video.
So, these are clear and unambiguous ways to denote the video area of
interest to viewers: 16x9, 2.35:1, 14:9, 4:3 -- or even (using bar data) any
other format, even marking discontinuous regions.
And, you still appear to be confused yourself; it's not easy to confuse me
about this.
John Willkie
-----Mensaje original-----
De: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] En
nombre de John Shutt
Enviado el: Tuesday, March 04, 2008 12:19 PM
Para: opendtv@xxxxxxxxxxxxx
Asunto: [opendtv] Re: 4:3 transmissions of syndicated programming
----- Original Message -----
From: "John Willkie" <johnwillkie@xxxxxxxxxxxxx>
> SAR and DAR will NOT tell you what you assert -- they tell you the screen
> aspect ratio and the aspect ratio of the video samples themselves (the
> scanning grid, if you will.)
John,
That is exactly what I assert SAR and DAR tell you.
My qoute exactly:
"DAR will tell you that the video stream is 4:3."
If I have confused you by not including SAR with DAR, my apolgies. SAR
depends on the ultimate display device. DAR depends on the source material.
John
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