Date: Sun, 23 Feb 1997 22:14:18 +0100 (MET) From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> To: multimedia@freebsd.org Subject: Teletext decoding Message-ID: <199702232114.WAA20000@labinfo.iet.unipi.it>
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Hi, if someone is interested in decoding Teletext/Videotext data acquired with a frame grabber, I have some code which does the job. You need your frame grabber to acquire the lines containing teletext data (usually before the visible area); a simple patch to the meteor driver does the job, I assume th bt848 driver can also do the same thing. The sampling rate is not exceedingly important (provided it is high enough, e.g. 640 pixels) since I use a routine from sox to do the resampling with the correct values. Those interested can send me email for a copy. Luigi -----------------------------+-------------------------------------- Luigi Rizzo | Dip. di Ingegneria dell'Informazione email: luigi@iet.unipi.it | Universita' di Pisa tel: +39-50-568533 | via Diotisalvi 2, 56126 PISA (Italy) fax: +39-50-568522 | http://www.iet.unipi.it/~luigi/ _____________________________|______________________________________
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