gnutv

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A commandline utility bundled in the dvb-apps which can, amongst other capabilities, provide DVB viewing with devices with on-board hardware decoders (formerly often referred to as "full featured" devices).

Example command to capture video and live closed captioning:

# Pipe stream to file and to the closed captioning decoder using tee
# gnutv's default value for -channels is /etc/channels.conf
gnutv -adapter $DEV -timeout $TIM -out stdout $CH | tee $FIL.mpg | \
zvbi-atsc-cc --atsc -p -m -T -1 - -2 - -X - $CH > $FIL.txt