On Wed, 2016-01-06 at 12:00 -0500, discuss-gnuradio-requ...@gnu.org wrote:
> On Wed, Jan 6, 2016 at 11:09 AM, Richard Bell > <richard.be...@gmail.com> > wrote: > > > Does anyone know of a good tutorial that shows how to receive and > display > > TV on Ubuntu using a USRP and GNU Radio? I'm interested. > > > > Rich > > > > > Rich, > > I'm not sure anyone's written it up, but there are examples in > gr-dtv/examples. I just looked, and we've neglected to add the files > to the > CMakeLists.txt file to install these properly. Regardless, if you have > the > source code, look at uhd_atsc_capture.grc and file_atsc_rx.grc. If you > have > a powerful enough machine, you can also try uhd_rx_atsc.grc directly. > > I think it'd be great if someone wrote a tutorial showing to how use > these. > > Tom Well assuming, you have all the CPU you need: Start with the simple thing to do: save to a file and then play the file: a. Use uhd_rx_atsc.grc to capture a channel as an MPEG TS to a file named mpeg.ts b. $ cat mpeg.ts | mplayer - Then, as a better thing to do: spit out the MPEG TS on a local socket and play it locally from the socket: a. Modify uhd_rx_atsc.grc to capture a channel as an MPEG TS and send it out a TCP Sink or UDP Sink block. b. $ socat TCP4:127.0.0.1:1234 - | mplayer - (socat arguments may need tweaking) socat (a better netcat) and its documentation are available here, if not packaged by your distro: http://www.dest-unreach.org/socat/ And then as an even better thing to do: spit out the MPEG TS on a local socket and then let VLC handle playing locally or streaming over the network: a. Modify uhd_rx_atsc.grc to capture a channel as an MPEG TS and send it out a TCP Sink or UDP Sink block. b. $ vlc tcp://127.0.0.1:1234 (vlc arguments may need tweaking, I don't know if that actually works) VLC can act as a streaming server as well as a decoder/viewer, so you can use it to stream to other VLC clients on other machines using RTSP or other multimedia protocols. Regards, Andy _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
