Date   : Wed, 03 Aug 2011 05:23:40
From   : darren.storer@... (Storer, Darren)
Subject: [BeebSoc] Auntie, dear Auntie

Alistair Buxton has had good success recovering teletext from standard VHS
recordings, with his own custom code:

https://github.com/ali1234/vhs-teletext

Cheers

Darren

On 3 August 2011 13:00, Rick Murray <heyrick.beebsoc@...> wrote:

> On 03/08/2011 13:03, Adam Sampson wrote:
>
>  (S-VHS apparently preserves Teletext reasonably well anyway, but I never
>> had an S-VHS machine.)
>>
>
> I think the problem is that a standard video recorder tends to mess up the
> VBI with head-switching, while S-VHS has a higher bandwidth and preserves
> more of the picture.
> Not to mention the lack of resolution in VHS, coupled with the inherent
> blurring.
>
> It might be possible, as you say, to record a sequence of frames and try
> using multiple copies of the data to try to work out what it should actually
> be, but then how many domestic capture devices permit that part of the
> screen to be captured?
>
> I wonder if somebody has an off-air recording on S-VHS that could be used?
>
>
> Best wishes,
>
> Rick.
>
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