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Heat Damaged Digital Video

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llawmaster
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Joined: 08 Aug 2008
Location: United States

Post Posted: Aug 08, 2008 15:43 Posts Comp View users profile Send private message Reply with quote

I am currently working on a project to convert an independently produced TV series to DVD.

Many of the video tapes have heat damage, and I have no access to the master tapes. They are owned by a library, and do not allow access via those means.

All of my footage is from dubs of those master tapes.

I currently use Sony Vegas Studio and Photoshop CS3 for my video work, but I am completely out of my territory on this one.

Here is a screenshot of the damage I am speaking about. I have also attached it.

<a href="http://www.flickr.com/photos/lml_dvd/169962227/" title="Episode 8 (Heat Damaged) by The Lawmasters, on Flickr"><img src="http://farm1.static.flickr.com/46/169962227_8028087362_o.jpg" width="800" height="600" alt="Episode 8 (Heat Damaged)" /></a>

Does anyone have any advice on how to attack this?

Any advice would be appreciated!

Thanks,

Lee


themaster1
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Joined: 16 Nov 2006
Location: France

Post Posted: Aug 08, 2008 16:03 Posts Comp View users profile Send private message Reply with quote

See here
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llawmaster
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Joined: 08 Aug 2008
Location: United States

Post Posted: Aug 08, 2008 16:44 Posts Comp View users profile Send private message Reply with quote

themaster1 wrote:
See here
I read that post and found it interesting, but it is dealing with problems with the entire frame. Filters and overlays will change the whole frame, which may correct the damage, but then change the rest. This is my conondrum.

nwo
nEw WoLrD OrDeR


Joined: 31 Jan 2004
Location: Stadium Of Light

Post Posted: Aug 08, 2008 16:49 Posts Comp View users profile Send private message Reply with quote


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edDV
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Joined: 06 Mar 2004
Location: Northern California, USA

Post Posted: Aug 08, 2008 19:05 Posts Comp View users profile Send private message Reply with quote

Your title says "Heat Damaged Digital Video". Digital tape fails into pixelation not what you are showing.

Are you talking about VHS or which format?

Also what was the format of the original camcorder master?
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llawmaster
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Joined: 08 Aug 2008
Location: United States

Post Posted: Aug 08, 2008 19:30 Posts Comp View users profile Send private message Reply with quote

The masters were recorded in various formats mainly VHS, 8mm and VHS-C. They are untouchable though, as I said in my original post.

The dubs I have are VHS, but again those tapes are fine, it's the masters with the problem. The only way I can see to really correct this is with some sort of software solution.

I'm looking for some advice here regarding how to fix that damage.


redwudz
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Joined: 07 Sep 2002
Location: AZ, USA

Post Posted: Aug 08, 2008 19:35 Posts Comp View users profile Send private message Reply with quote

Looks like this with a bit of ColorMill applied:



But I had to reduce the blue to almost nothing and boost the red to about max. But the 'green legs' aren't much worse. laugh.gif

Also one frame of video is not a good way to judge the result, unless the problem is exactly the same in every frame. But you can definitely improve it.


edDV
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Joined: 06 Mar 2004
Location: Northern California, USA

Post Posted: Aug 08, 2008 20:40 Posts Comp View users profile Send private message Reply with quote

So you are dealing with a Y/C to NTSC composite dub captured to YCbCr.

Dub over S-Video would have kept Y and C separate improving the odds for color correction without affecting luminance.

A TBC or frame synchronizer would have improved the original dub. A dub house would have the right equipment.

As it is, you can play with digital filters but don't expect great results.
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llawmaster
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Joined: 08 Aug 2008
Location: United States

Post Posted: Aug 08, 2008 20:52 Posts Comp View users profile Send private message Reply with quote

I do not know exactly how it is dubbed. It's almost like it's a national secret.

I haven't been privey to how they are dubbed, only transferring it from VHS to digital have I been involved.


edDV
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Joined: 06 Mar 2004
Location: Northern California, USA

Post Posted: Aug 08, 2008 21:34 Posts Comp View users profile Send private message Reply with quote

llawmaster wrote:
I do not know exactly how it is dubbed. It's almost like it's a national secret.

I haven't been privey to how they are dubbed, only transferring it from VHS to digital have I been involved.


If you could dub from the original tapes again, things could be done. Once the stew is over salted*, recovery is difficult and it won't be the same.

* i.e. conversion to composite NTSC.


BTW: Heat didn't destroy that original tape obviously but one side probably got heated more than the other causing warping or stretching on that side of the tape. A playback VCR places even tension on the tape. The stretched portion would show phase (hue) or dropout errors.
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2Bdecided
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Joined: 21 Nov 2007
Location: United Kingdom

Post Posted: Aug 11, 2008 05:31 Posts Comp View users profile Send private message Reply with quote

llawmaster wrote:
I am currently working on a project to convert an independently produced TV series to DVD.

Many of the video tapes have heat damage, and I have no access to the master tapes. They are owned by a library, and do not allow access via those means.
Is this for real? TV series are not converted to DVD from second generation VHS dubs!

The library should be paying you (or someone) to do the job properly before the tapes disintegrate further - not locking them away to rot. This is assuming you have copyright permission to do the job.

btw, VHS was never a "master" format - there must be something else - Hi8 at least, even for small TV stations, surely?

Cheers,
David.


llawmaster
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Joined: 08 Aug 2008
Location: United States

Post Posted: Aug 11, 2008 16:48 Posts Comp View users profile Send private message Reply with quote

I have seen the masters and they are on VHS (for real).

Anyone can do anything they want with the show, they just cannot make money from it.

This is kind of a passion and not about finances.


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