[QuadList] Blanking Specs: Needed now? (was Re: DVE use to meet blanking specs)

[dcfwtx at aol.com]

Ted,


We always confirm that the VTR is not adding either way to H or V blanking. If we observe it in demod., we note it on the "Summary of Transfer" report. No one has ever returned a product asking for a fix for blanking. We have the equipment and horsepower to do it, but it has not come up, even with the proliferation of center cut (4x3) playing in a 16x9 environment. 


We have blown up material for clients when some other objectionable situation is bothering them (always recorded into their master). 


Blanking should not be fixed unless asked for by the client. We might center up the TBC to lessen the back or front porch though. But it will be noted on their report.


In reference to the other DVD blowup responses, I can't tell you how many programs, program segments, or hours I have been assigned to blowup material for blanking reasons in another job. On another DVE issue, "Malcolm in the Middle" 16x9 widescreen versions all needed severe K scope or DME 5000 work, but it was not for blanking issues, but rather for production framing issues. Later, I used the Nitris DS for that fix (not realtime though). But that's another thread...


The use and power of the realtime DVE is still a valuable resource.


David Crosthwait
DC Video
www.dcvideo.com








-----Original Message-----
From: Ted Langdell <ted at quadvideotapegroup.com>
To: Quad List <quadlist at quadvideotapegroup.com>
Sent: Mon, Feb 1, 2010 9:54 am
Subject: [QuadList] Blanking Specs: Needed now? (was Re: DVE use to meet blanking specs)


General questions to the list:



There were obvious legal (FCC Rules), and operational reasons to insist on blanking to meet specs (tape exchange, smooth playback without hiccups on air or during editing among the reasons, pride in quality work is another.)


Times have changed, and with the demise of analog TV, blanking specs may not seem as important as they once were.  


I think they are, but there's likely a need to "sell" the idea to some folks who don't see why you can't just "slap it on/in the machine and hit play," and to train people in how to meet the standards.


In that regard:



What are people finding for blanking as they transfer archives of tapes?


Is out of spec material causing problems during transfer?  Details?


What are you doing (if anything) to correct blanking for transfer to other tape or digital file formats?


Should blanking be corrected?


Some archivists would want the material transferred "exactly as it is" warts and all.


Thoughts?


Ted




Ted Langdell
Secretary




On Feb 1, 2010, at 10:20 AM, DCFWTX at aol.com wrote:


In a message dated 2/1/2010 7:09:51 AM Pacific Standard Time, Chill315 at aol.com writes:
 
 
The machines all had to be checked and we reset the blanking width to the 10.8 (?) width. 

 
 I think 10.6 was pretty much the target. 11.0 was nominal. More than 11.4 and it was grounds for rejection. Too short of H. blanking and some machines did not like the short front porch.
 
 
 David Crosthwait
 
 DC Video 
 WWW.DCVIDEO.COM
  _______________________________________________

 




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