Closed captions / Teletext support

In order to conform to international regulations, VLC needs to be able to decode the closed captions in TV, DVD, DVB and HDTV video. V4L has a CC api, DVD and HDTV usually have them in a seperate stream.

Use ZVBI library for VBI decoding and image generation
ESTI EN 300 472 for EBU teletext support in DVB

Perhaps look at Xawtv, dvbtext and other vbi, vtx systems.

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information