On 28/05/2017 15:57, Stephen wrote:
> Hello,
>
> I've got a couple of VHS tapes that are not available on DVD so I got
> my old VCR out of the wardrobe and tried to connect it to my Pioneer
> freeview dvd recorder. But the dvd recorder displayed a message saying
> it was copy protected and refused to record it. I'm guessing it is
> macrovision?
Yup, that's fairly likely.
> I don't have a video card so I cannot copy to my pc at the moment.
> Please recommend one if you think that's the way to go.
>
> I was wondering if there was a little black box I could connect
> between the vcr and recorder to remove the macrovision. If so what
> product do you recommend?
There certainly used to be - typically marketed as video "stabilisers".
Basically they just clamped the video to black during the vertical
retrace, thus defeating the macrovision "white bars"[1]. Not sure if
those are staill available on ebay. However you could look at a proper
time base corrector, which will also do the job.
[1] Macrovision typically inserted bright white bars into the video
during the vertical retrace. Normally these unseen video lines would be
black. However the high intensity tends to cause the automatic gain
control in the copying recorder to wind down the gain. Thus causing it
to desensitise the recording of the frame and line synch pulses and also
mess up the black level clamping. The result being fluctuating picture
brightness, and also picture rolling and loss of sync.
> Do all dvd recorders have this "feature"? Is there a firmware upgrade
> or remote hack that makes Pioneers ignore macrovision?
Even if they don't detect it, you may find you still get problems due to
the effects of the protection.
> One last question: I am having trouble inserting and ejecting tapes. I
> think the vcr needs servicing. Where can I buy replacement belts from
> and are service manuals available anywhere (it is a Thomson vcr).
Searching the web with the model number may turn up a PDF of the manual.
Places like CPC usually have a good range of spare belts. Other parts
may be harder to get now though.
--
Cheers,
John.
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