Feature request: Wide Screen Signalling

ali1234 / raspi-teletext

Generate teletext with a Raspberry Pi

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Feature request: Wide Screen Signalling #7

Open jpmeijers opened 7 years ago

jpmeijers commented 7 years ago

I'm not even sure if this is technically possible, but it would be awesome if this software also did WSS.

See: https://en.wikipedia.org/wiki/Widescreen_signaling

Use case: I use a Raspberry Pi to create an analog TV channel via an AV to RF modulator. The teletext feature is already super useful. Having the ability to tell a TV to play the channel in 16x9 mode, using WSS will be the cherry on the cake.

ali1234 commented 7 years ago

This would be easy to do. You will lose even more lines from the bottom of the picture though. Maybe when the anholt driver is done we'll be able to have a screen mode with more than 576 lines total.

ali1234 commented 7 years ago

Actually that's not true. WSS is under the teletext so you won't need to modify tvctl at all.

ali1234 commented 4 years ago

Closed by mistake :(

ali1234 commented 4 years ago

This should now be possible using config.txt sdtv_aspect. It didn't work previously due to a bug. See https://github.com/raspberrypi/documentation/blob/master/configuration/config-txt/video.md and https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=256489