[QuadList] Quad Animation: "Sit back and watch it roll back, roll in, edit, rinse, repeat" (Was RCA TR 5 on eBay)

[David Crosthwait]

Let the animation competition begin, Ampex style!



Regards,

David Crosthwait
DC Video

david at dcvideo.com
www.dcvideo.com

Follow DC Video on Facebook: https://www.facebook.com/dcvideo






On Feb 19, 2012, at 1:02 PM, Dave Sieg wrote:

> I kind of cheated,
> I used a pre-striped tape and kept the original control track.
> The servo continued as if it were in playback but the signal processing switched into record.
> The erase head came on about 500 ms before the recording started.
> I literally filed away the control track portion of the erase head and filled it in with epoxy.
> Then I glued on a separate erase head for the control track for normal use.
> I put a blip on the cue track where I wanted the edit.
> Then I out-boarded a cue-track read head near the erase head  to start the whole process.
> In the time-lapse mode, the edit would erase the old blip and record a new one a frame later.
> As I recall the machine had to lock up color framed rolling into the edit or it would back up and try again.
> The whole time-lapse thing was a one-trick setup, but once started you could just sit back
> and watch it roll back, roll in, edit, rinse, repeat.
> Hey, I was a college kid with a lot of free time on my hands, what can I say?
> 
> On Sun, Feb 19, 2012 at 3:20 PM, <Chill315 at aol.com> wrote:
> So I have to ask,
>  
> Were these color framed or not?
> Did you use time code?
> How do you know that it did not overwrite an earlier edit?
>  
> Chris Hill
>  
> In a message dated 2/19/2012 1:35:46 P.M. Eastern Standard Time, dave at zfx.com writes:
> Obviously new high band head and preamp,
> playback eq's changed
> mod/demod mods
> and significant re-building the record amplifiers.
> Theres a lot of non-obvious spectrum magic that takes place in those record amps!
> And I built an editor that could do single-frame edits for it too!
> Here is my test run, 1275 consecutive off-the-air single-frame edits all perfect!
> (Unfortunately this is from a 3/4" dub, I didnt' save the original.)
> http://vimeo.com/5567846 
> Makes for a real time-capsule!
> 
> On Sun, Feb 19, 2012 at 1:29 PM, David Crosthwait <david at dcvideo.com> wrote:
> Dave,
> 
> Other than the TBC, what was involved with the high-banding effort? Mod/demod/filters? Updated head wheel/pre-amps? Was this a home-brew effort? Regardless, hats off  to you!
> 
> David
> 
> david at dcvideo.com
> www.dcvideo.com
> 
> 
> 

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