guang-c / hacktv Goto Github PK

 -[ HackTV - Analogue TV transmitter for the HackRF ]-


WHAT'S IT DO

Generates a PAL, NTSC, SECAM*, D/D2-MAC video signal from a video file, stream
or test pattern. Also supports older 819, 405, 240 and 30 line standards, as
well as the NASA Apollo video standards, both colour and mono.

Input is any file type or URL supported by ffmpeg.

Output can be to a file, HackRF, fl2k-supported VGA adaptors or any SDR
supported by SoapySDR.

It also supports:

+ Teletext (625-line only)
+ NICAM stereo audio
+ Videocrypt I/II/S hardware support
+ Partial Nagravision Syster hardware support
+ Analogue Copy Protection system, similar to Macrovision

* SECAM support is very basic and won't produce a good image


WHAT'S IT NOT DO (yet)

+ There are no filters. Needed for proper audio and VSB modulation
+ An optional notch filter for the colour subcarrier would be nice


WHAT IT WON'T DO

+ DVB or other pure digital signals
+ Bring back Firefly :(


REQUIREMENTS

Depends on libhackrf and various ffmpeg libraries.

* For Fedora (with rpmfusion)
yum install hackrf-devel osmo-fl2k-devel SoapySDR-devel ffmpeg-devel

* For Debian and related
apt-get update
apt-get install libhackrf-dev libavutil-dev libavdevice-dev libswresample-dev libswscale-dev libavformat-dev libavcodec-dev

* On Debian (sid)
apt-get install hacktv


INSTALL

make
make install


EXAMPLES

# Generate a file containing a PAL baseband signal from a video
$ hacktv -o baseband.bin -m pal example.mkv

# Transmit a test pattern on UHF channel 31 (PAL System I), 47dB TX gain
$ hacktv -f 551250000 -m i -g 47 test

# Transmit a test pattern with teletext
$ hacktv -f 551250000 -m i -g 47 --teletext demo.tti test

# Download and transmit teletext pages from the Teefax service
$ svn checkout http://teastop.plus.com/svn/teletext/ teefax
$ hacktv -f 551250000 -m i -g 47 --teletext teefax test


-Philip Heron <[email protected]>