Updated fork of the original rpidatv to work with the Pi4 (and zero 2w) on Trixie. The install script is not updated, but you can follow similar steps. You will need to compile wiringpi from source (as its not on the repo anymore) and other packages have been renamed. For my demo, I also used ffmpeg instead of avc2ts to generate the stream which worked fine. Does NOT work on the Pi5 due to changes on how GPIO is handled.
(17.1cm wire inside a straw to keep it upright)
rpidatv is a digital television transmitter for Raspberry Pi (B,B+,PI2,PI3,Pizero) which output directly to GPIO. (Created by Evariste Courjaud F5OEO. Code is GPL)
Install a Raspbian Lite : (Raspbian Lite)
$ wget https://raw.githubusercontent.com/F5OEO/rpidatv/master/install.sh
$ chmod +x install.sh
$ ./install.shPlug a wire on GPIO 12, means Pin 32 of the GPIO header : this act as the antenna. Length depend on transmit frequency, but with few centimeters it works for local testing.
rpidatv is located in rpidatv/bin folder
rpidatv -2.0.0
Usage:
rpidatv -i File Input -s Symbolrate -c Fec [-o OutputMode] [-f frequency output] [-l] [-p Power] [-h]
-i path to Transport File Input
-s SymbolRate in KS (125-4000)
-c Fec : 1/2 or 3/4 or 5/6 or 7/8
-m OutputMode
{RF(Modulate QSK in RF need -f option to set frequency)}
{IQ(Output QPSK I/Q}
{PARALLEL(Output parallel (DTX1,MINIMOD..)}
{IQWITHCLK(Output I/Q with CLK (F5LGJ)}
{DIGITHIN (Output I/Q for Digithin)}
-f Frequency to output in RF Mode in MHZ
-l loop file input
-p Power on output 1..7
-x GPIO Pin output for I or RF {12,18,40}
-y GPIO Pin output for Q {13,19,41,45}
-h help (print this help).
Example : sudo ./rpidatv -i sample.ts -s 250 -c 1/2 -o RF -f 437.5 -l
rpidatv needs a DVB transport stream in input. In the past, ffmpeg was used to generate transport stream. Because ffmpeg is not completely DVB compliant and induces latency, an other tool is proposed : avc2ts
avc2ts is located in rpidatv/bin folder
avc2ts -1.0.0
Usage:
rpi-avc2ts -o OutputFile -b BitrateVideo -m BitrateMux -x VideoWidth -y VideoHeight -f Framerate -n MulticastGroup [-d PTS/PCR][-v][-h]
-o path to Transport File Output
-b VideoBitrate in bit/s
-m Multiplex Bitrate (should be around 1.4 VideoBitrate)
-x VideoWidth (should be 16 pixel aligned)
-y VideoHeight (should be 16 pixel aligned)
-f Framerate (25 for example)
-n Multicast group (optionnal) example 230.0.0.1:10000
-d Delay PTS/PCR in ms
-v Enable Motion vectors
-i IDR Period
-t TypeInput {0=Picamera,1=InternalPatern,2=USB Camera,3=Rpi Display,4=VNC}
-e Extra Arg:
- For usb camera name of device (/dev/video0)
- For VNC : IP address of VNC Server. Password must be datv
-p Set the PidStart: Set PMT=PIDStart,Pidvideo=PidStart+1,PidAudio=PidStart+2
-s Set Servicename : Typically CALL
-h help (print this help).
Example : ./rpi-avc2ts -o result.ts -b 1000000 -m 1400000 -x 640 -y 480 -f 25 -n 230.0.0.1:1000
A console interface is provided under rpidatv/scripts
$ /home/pi/rpidatv/scripts/gbmenu.sh
A graphical interface is provided under rpidatv/bin/ folder
$ /home/pi/rpidatv/bin/rpidatvgui