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03-20-2017, 03:27 PM
msgohan msgohan is offline
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12voltvids on YouTube:

Time Base Corrector Demo. Covers the gamut of what time base errors are, their causes, why it matters, how to fix them. Shows vertical & horizontal sync, both separately and together in Pulse Cross mode on a broadcast monitor. Explains why consumer CRT TVs don't wiggle the way our digitizers do. Abuses the VCR's drum, giving his TBC a workout in the process. Does wander a bit from the central premise as he's a little too proud of his nifty old monitor.
- "TBC": Videonics MX-1 digital video mixer.


Capture with and without a time base corrector. Demonstrates capturing 2nd gen VHS using a Hauppauge HD PVR. Without TBC, the stupid thing glitches then freezes up completely. Magically cured by passing through vision mixer.
- "TBC": Videonics MX-1 digital video mixer.


Macrovision vs a Time Base Corrector. Shows MV signals present in vertical & horizontal sync on a broadcast monitor, including effects of ColorStripe. Apparently the MX-1 leaves some residual lines containing MV, while the MV stripper of course over-corrects by also killing the closed caption lines.
- "TBC": Videonics MX-1 digital video mixer.
- MV stripper: A Macrovision Eliminator box he built in the '80s.



Copy macrovision protected Video to DVD. Least useful; only shows oscilloscope view + Jurassic Park on an LCD. Semi-interesting if you care to see MV at the actual signal level, but the rolling shutter of his camera makes it difficult to see.
- MV stripper: A Macrovision Eliminator box he built in the '80s.


He's a local guy.

[Sticky...? I think he really does a great job, especially in the first video explaining the mechanical reasons for varying sync timing.]

Last edited by msgohan; 03-20-2017 at 03:42 PM.
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Someday, 12:01 PM
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  #2  
08-29-2017, 03:47 PM
ENORM ENORM is offline
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Thanks a lot for this interesting and excellent videos!!

I have a poor english, so I think i've understood: if i want to digitalize vhs always have to use a tbc (i have mx1). always with 0 options in the setup menu?

but if i want to erase mv from a tape the best option is a mv eraser box. i have one of them but i dont know if all the boxes are the same way or there are different systems... i have one of these boxes but i dont know if internally is the same than your.

thanks in advance and hope to keep in touch !!
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  #3  
04-06-2022, 10:35 AM
msgohan msgohan is offline
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Original thread title: "Excellent videos showing the exact effects of time base errors & TBC"

Current thread title changed by forum admin at some point: "Examlpes of time base errors & TBCs?"

I don't appreciate this.
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  #4  
04-06-2022, 11:38 AM
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lordsmurf lordsmurf is offline
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Quote:
Originally Posted by msgohan View Post
Original thread title: "Excellent videos showing the exact effects of time base errors & TBC"
Overly long titles creates truncation issues with SEO, both automated (Google/etc) and human usage patterns. It's only gotten worse in recent years, with more mobile usage, and smaller screens.

Direct from Google itself, not BS: https://developers.google.com/search...nce/title-link

The & should have been removed as well, ASCII errors in the SERPs.

This helps the community, because posts can be better found in searches. Noting that searching is already cumbersome at times, some manual curation is needed. (Several have volunteered to curate, but nobody ever follows through on this.)

Quote:
Examlpes
Typo. Fixed.

And it's actually not a "typo", but a combo of dexterity and dyslexia, as caused by MS.
See also: http://www.digitalfaq.com/forum/news...lordsmurf.html

- Did my advice help you? Then become a Premium Member and support this site.
- For sale in the marketplace: TBCs, workflows, capture cards, VCRs
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  #5  
04-06-2022, 11:54 AM
msgohan msgohan is offline
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Now:
"Examples of time base errors, TBC?"

Why not:
"Videos of time base errors, TBC"

What's the question mark for?
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