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<font face="Tahoma">Hmm,<br>
<br>
To answer your Trivia Question:<br>
<br>
I believe the color subcarrier frequency selected was almost, but
not quite, a function of the nation's power grid then known as 60
cycles per second. What I cannot recall is whether the nation's
power companies shifted their actual frequency to match...but
think they did.<br>
<br>
Steve<br>
<br>
<br>
</font>
<div class="moz-cite-prefix">On 12/23/13 1:36 PM, James Snyder
wrote:<br>
</div>
<blockquote cite="mid:p06240802cede309e16be@%5B192.168.1.36%5D"
type="cite">
<br>
If the label says "NTSC" it means 29.97, not 30fps. This may seem
to be splitting hairs, but for those of us who archive video
materials there is a meaningful technical difference between 29.97
fps and 30 fps. There actually is 30 fps material being produced
today, and it doesn't always play nicely with 29.97 equipment
unless it's slowed down properly.
<br>
<br>
PAL and SECAM (and all 576 line digital video) is 25.00 fps, of
course.
<br>
<br>
Then there is the whole Drop Frame vs. Non-drop frame time code
thing. I can't wait for the day when we no longer need Drop Frame
time code.
<br>
<br>
Additionally, "YUV" is a misnomer as well. YUV is the term used
for PAL & SECAM variant of YPbPr component color difference
encoding in the ISO international analog television standards.
YIQ was NTSC's term. YPbPr is the proper terminology for
component color difference signals, like those used in MPEG-2
encoded video on DVDs. Hence, you CANNOT use the term "YUV" when
talking about NTSC coded video. Oh, the irony. However, since
"YUV" seems to be easier to use as a term than "YPbPr" to the
vendors who write the manuals, software and documentation (and
most of those vendors are in former YUV countries) the misuse of
YUV terminology continues.
<br>
<br>
Trivia question for the group: why does the 29.97 frame rate
exist?
<br>
<br>
James
<br>
<br>
------------------------------------------------
<br>
James Snyder
<br>
Senior Systems Administrator
<br>
Library of Congress -
<br>
National Audio Visual Conservation Center (NAVCC)
<br>
Motion Picture, Broadcasting & Recorded Sound Division (MBRS)
<br>
Packard Campus for Audio Visual Conservation
<br>
<a class="moz-txt-link-freetext" href="http://www.loc.gov/avconservation/packard/">http://www.loc.gov/avconservation/packard/</a>
<br>
<br>
<br>
<blockquote type="cite">Sometimes the NTSC label simple means 30
fps, and PAL 25fps
<br>
<br>
Robert
<br>
<br>
RMC Media Partnership
<br>
<br>
On Mon, Dec 23, 2013 at 5:24 PM, Steve White
<<a class="moz-txt-link-rfc2396E" href="mailto:Steve.White@800callnow.com"><mailto:Steve.White@800callnow.com></a><a class="moz-txt-link-abbreviated" href="mailto:Steve.White@800callnow.com">Steve.White@800callnow.com</a>>
wrote:
<br>
<br>
<br>
<br>
Fred & Tony,
<br>
<br>
Thank you for your replies. Both are helpful.
<br>
<br>
I did not have VLC. Just downloaded it from cnet. VLC reports:
<br>
<br>
Codec: MPEG-1/2 Video (mpgv)
<br>
Resolution: 720x480
<br>
Decoded format: Planar 4:2:0 YUV
<br>
<br>
Which leaves just one question. Is it technically correct to
label this as an NTSC DVD, or should it be labeled something
else?
<br>
<br>
Warm regards,
<br>
Steve
<br>
<br>
<br>
On 12/23/13 12:07 PM, Fred Kovach wrote:
<br>
<br>
<blockquote type="cite">Hi Steve,
<br>
</blockquote>
<br>
It prob is 480i anamorphic. Many bluray players will play
whatever is in them at 1080p. Anamorphic refers to a 16:9 being
squeezed into a 4:3 picture, which is then stretched out to the
full 16:9 screen on the monitor.
<br>
<br>
That being said, TQ's advice to use VLC is your best between to
find out what format it's in.
<br>
<br>
Take care,
<br>
Fred
<br>
<br>
Fred and Crystal Kovach,
<br>
along with Phillip, Stephen and Hope.
<br>
<br>
Your missionaries using media technology to reach our world for
Jesus!
<br>
Voice: <a class="moz-txt-link-rfc2396E" href="tel:417.848.8381"><tel:417.848.8381></a>417.848.8381
<br>
Main Webpage:
<a class="moz-txt-link-rfc2396E" href="http://www.fredcrystal.com/"><http://www.fredcrystal.com/></a><a class="moz-txt-link-abbreviated" href="http://www.fredcrystal.com">www.fredcrystal.com</a>
<br>
Ministry Information:
<a class="moz-txt-link-rfc2396E" href="http://ministry.fredcrystal.com/"><http://ministry.fredcrystal.com/></a><a class="moz-txt-link-freetext" href="http://ministry.fredcrystal.com">http://ministry.fredcrystal.com</a>
<br>
<br>
Sent from my iPhone
<br>
<br>
On Dec 23, 2013, at 10:53 AM, "Steve White"
<<a class="moz-txt-link-rfc2396E" href="mailto:Steve.White@800CallNow.com"><mailto:Steve.White@800CallNow.com></a><a class="moz-txt-link-abbreviated" href="mailto:Steve.White@800CallNow.com">Steve.White@800CallNow.com</a>>
wrote:
<br>
<br>
<blockquote type="cite">Thanks for the opportunity to ask, can
someone help me get a better grasp of DVD vs Blu-Ray formats?
<br>
<br>
I recently received a video disc labeled as an NTSC DVD of the
Garth Brooks "Blame It All On My Roots" performance in Las
Vegas. Playback on my Blu-Ray deck displays as full screen on
a new Panasonic plasma screen capable of 1080p without obvious
aspect ratio distortions.
<br>
<br>
Garth's performance is incredible; lighting, camera work,
audio, direction all are great. Apparently, there is
currently no Blu-Ray disc available.
<br>
<br>
- Is it technically correct to label the DVD as NTSC when the
image displayed is 16:9?
<br>
<br>
- What's the likely resolution/format? Any suggestions on how
I could have confirmed that without asking you?
<br>
<br>
Many thanks,
<br>
Steve
<br>
<br>
</blockquote>
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