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| bhwsyd |
| Posted: Feb 12 2012, 09:59 PM |
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Member
Group: Members
Posts: 21
Member No.: 25989
Joined: 10-August 09
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Hi all
I have been recording VHS tapes using Virtualdub via my BlackMagic card; very successfully I might add.
Some tapes though are 30years+ old and some have dropouts where the screen plinks with a blank and black frame or two. This ranges throughout a 1.5 hour tape from a few each second to one every 30 seconds. There are too many to remove by hand or copy paste frames.
What is the best advice you have for dealing with this?
Is there a filter that if it comes across a black frame can copy the frame before?
Many thanks in advance.
Brett |
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| rjisinspired |
| Posted: Feb 15 2012, 12:42 AM |
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Advanced Member
Group: Members
Posts: 1256
Member No.: 20008
Joined: 12-October 06
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AVIDemux has a black frames detector option under the tools menu which writes out an analysis file.
I don't know if AVIDemux uses that black frames file as a correction file. I'm guessing it does but because I had my files already converted to Xvid I didn't want to reencode the whole file over again because of long waits and quality loss so I used frame tweaker in Vdub and used curve editing for only the parts that had the black frames and then used smart rendering for saving the final video.
In your case and in my case, now on a different tape, I have a tape that has far too many black frames to deal with by hand.
I am curious to know about the dropouts too. I am working on capping VHS tapes again and have run into the same problem as the original poster. One tape I'm working on now is pretty bad. |
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| rjisinspired |
| Posted: Feb 15 2012, 07:42 AM |
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Advanced Member
Group: Members
Posts: 1256
Member No.: 20008
Joined: 12-October 06
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I had to re-edit the above post because of my suggestion not being feasible. However I will use this post to provide the link to FTWEAK which is a plugin that is capable of copying previous frames and pasting them into the black frames or blank areas. It is great for a handful of black frames but it isn't really that convenient nor feasible on a huge amount of black frames especially if they are throughout a long video.
Link to Frame Tweaker.
http://rjschat.dyndns.org:8080/Paranoha/AP...UB/FTWEAK11.ZIP |
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| bhwsyd |
| Posted: Feb 15 2012, 08:40 AM |
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Member
Group: Members
Posts: 21
Member No.: 25989
Joined: 10-August 09
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Thanks, that does look a good solution for a couple of black screens. I do have the problem of there being a few hundred I'd imagine over 1.5 hours. An automatic form of FTweak would certainly do the trick. |
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| videocrack |
| Posted: Feb 19 2012, 11:55 AM |
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Member
Group: Members
Posts: 27
Member No.: 26678
Joined: 27-December 09
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seems like a similar problem is mentioned here:
http://forum.doom9.org/showthread.php?t=153594
perhaps this helps? |
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