[opendtv] Re: Redefining anamorphic
- From: "John Willkie" <johnwillkie@xxxxxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Sun, 9 Mar 2008 10:10:12 -0700
Adam;
This is the second time, actually, that you saved me work, since I thought
at one time that AFD was in the pmt descriptors, and I coded for it.
Stubbing out these things at this point makes my life easier, since there's
no need to debug these things.
John
-----Mensaje original-----
De: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] En
nombre de Adam Goldberg
Enviado el: Sunday, March 09, 2008 6:59 AM
Para: opendtv@xxxxxxxxxxxxx
Asunto: [opendtv] Re: Redefining anamorphic
I don't mean to give you work, I thought you knew something I didn't.
AFD, bar data, and pan/scan vectors are carried at the video layer (-2), and
I'm unaware of any use or specification for any of these things at the
system layer (-1, PSIP).
Yes, of course, SMPTE is hard at works, and good on 'em. There needs to be
mechanisms to carry this sort of data around so that it can end up in the
video layer at emission.
Adam Goldberg
adam_g@xxxxxxxxx
-----Original Message-----
From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] On
Behalf Of John Willkie
Sent: Sunday, March 09, 2008 12:42 AM
To: opendtv@xxxxxxxxxxxxx
Subject: [opendtv] Re: Redefining anamorphic
There has been some recent smpte work on transporting afd and pan/scan - bar
data in SDI/HD-SDI. It's somewhere on my hard-drive, but I've been having
the weirdest problem for hours, and I haven't been able to spare the time to
search, or have my computer search for it. I've rebooted about 5 times in
the last three hours. Each reboot causes me to regroup, and none of these
reboots has been unplanned.
It's been years since I did any work in this area, but somewhere I saw a
specification for bar data. I'm not so sure about pan/scan; the more recent
SMPTE stuff might have confused me.
There are just so many specifications and limited mental bandwidth to keep
track of them.
John Willkie
-----Mensaje original-----
De: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] En
nombre de Adam Goldberg
Enviado el: Saturday, March 08, 2008 9:26 PM
Para: opendtv@xxxxxxxxxxxxx
Asunto: [opendtv] Re: Redefining anamorphic
302M is an audio thing, I think.
All 300 468 has is a different "component type" for streams with/without pan
vectors.
You may be right, something may be somewhere, but it'd be news to me.
Adam Goldberg
adam_g@xxxxxxxxx
-----Original Message-----
From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] On
Behalf Of John Willkie
Sent: Saturday, March 08, 2008 8:43 PM
To: opendtv@xxxxxxxxxxxxx
Subject: [opendtv] Re: Redefining anamorphic
IIRC, SMPTE S302M, and I thought it was in the DVB-SI spec, but it ain't
jumping out for me at this moment.
John Willkie
-----Mensaje original-----
De: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] En
nombre de Adam Goldberg
Enviado el: Saturday, March 08, 2008 4:32 PM
Para: opendtv@xxxxxxxxxxxxx
Asunto: [opendtv] Re: Redefining anamorphic
Where's the descriptor definition for "pan/scan - bar data"?
Adam Goldberg
adam_g@xxxxxxxxx
-----Original Message-----
From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] On
Behalf Of John Willkie
Sent: Friday, March 07, 2008 7:45 PM
To: opendtv@xxxxxxxxxxxxx
Subject: [opendtv] Re: Redefining anamorphic
I'm sorry if what I said was confusing. I thought I was indicating that a
PSIP generator has no ability to affect video picture metadata.
However, a PSIP generator that could dynamically sample the transport stream
could detect if AFD was present, and if not, could inject pan/scan - bar
data into the inner loop descriptor of the PMT entry for the video
elementary stream.
John Willkie
-----Mensaje original-----
De: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] En
nombre de Adam Goldberg
Enviado el: Friday, March 07, 2008 10:33 AM
Para: opendtv@xxxxxxxxxxxxx
Asunto: [opendtv] Re: Redefining anamorphic
Explain how a PSIP generator has any affect on AFD?
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