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Teletext
Previous Page Identifying VBI data
Next Page Decoding RF Captures
BBC Testcard F 1994 PAL VHS sample with teletext in the VBI space.
Starting in the 1970's and ending in 2009~2015 it was an information system widely used in the United Kingdom & Mainland Europe, with some very limited use in North America.
(Still in use in some European/Eastern nations)
Teletext data packets were embedded into the top VBI picture area on live broadcasts, this was used daily for the news, weather, BBS boards, being highly regraded for same day stocks and sports information at a users fingertips in the analogue era there was even interactive games.
Thanks to Ali1234 for the R&D into this.
Teletext decoding has NVidia CUDA/OpenGL acceleration available alongside CPU if no GPU is available.
Decode "Deconvolve" Teletext Data With
teletext deconvolve -c ddd-tbc INPUT.tbc
View Teletext Data With
teletext vbiview -c ddd-tbc INPUT.tbc
This will eventually have a proper GUI viwer for extracted data.
Raspberry Pi based Closed Captions & Teletext generator tool that uses the composite output, this can be used with a TRRS 3.5mm breakout jack with current pi boards or older pi models with a dedicated yellow composite RCA jack.
The HackTV application can generate CVBS or modulated TV signals to file or pipe them to SDRs such as the FL2K & HackRF units.
Zapping - Linux
Previous Page Identifying VBI data
Next Page Decoding RF Captures
- FAQ - Frequently Asked Questions
- Diagram Breakdowns
- Visual-Comparisons
- VCR Reports / RF Tap Examples
- Download & Contribute Data
- Speed Testing
- Visual VBI Data Guide
- Closed Captioning
- Teletext
- WSS Wide - Screen Signalling
- VITC Timecode
- VITS Signals
- XDS Data (PBS)
- Video ID IEC 61880
- Vapoursynth TBC Median Stacking Guide
- Ruxpin-Decode & TV Teddy Tapes
- Tony's GNU Radio For Dummies Guide
- Tony's GNU Radio Scripts
- DomesDay Duplicator Utilities
- ld-decode Utilities