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Annotation of wikisrc/users/jruoho/dvb.mdwn, revision 1.3

1.1       jruoho      1: # Miscellaneous DVB Notes
                      2: 
                      3: ## How to test that a device is working?
                      4: 
1.2       jruoho      5: Here is one basic way to test a [[!template id=man name="dtv" section="4"]] device. The example uses DVB-T. First install the necessary packages
1.1       jruoho      6: 
                      7:        # cd /usr/pkgsrc/multimedia/dvb-apps
                      8:        # make install package clean
                      9: 
                     10:        # cd /usr/pkgsrc/multimedia/mplayer
                     11:        # make install package clean
                     12: 
                     13: Scan a basic `channels.conf`:
                     14: 
1.3     ! jruoho     15:        $ scan -x 0 /usr/pkg/share/dvb/dvb-t/fi-Turku > ~/.mplayer/channels.conf
1.1       jruoho     16: 
                     17: Then you should be able to already use `mplayer`:
                     18: 
                     19:        $ mplayer dvb://"YLE TV1"
                     20: 
1.3     ! jruoho     21: Above "YLE TV1" is a channel present in the configuration file. For more
        !            22: involved testing, one can use for instance `tzap` (or equivalently, `czap`
        !            23: or `szap`). First prepare again the configuration file:
        !            24: 
        !            25:        $ mkdir ~/.tzap && cd ~/.tzap
        !            26:        $ ln -s ~/.mplayer/channels.conf .
        !            27: 
        !            28: Then in one terminal set the driver for recording:
1.1       jruoho     29: 
                     30:        $ tzap -r "YLE TV1"
                     31: 
1.3     ! jruoho     32: This gives continuous information about the signal strength, signal to noise
        !            33: ratio (SNR), bit error rate (BER), and the number of uncorrected blocks (UNC),
        !            34: respectively. The values typically vary across cards and are often somewhat
        !            35: unreliable. But check for the FE_HAS_LOCK flag; it indicates whether the
        !            36: card has locked onto a signal. If there is a lock, pipe in an another terminal:
1.1       jruoho     37: 
                     38:        $ cat /dev/dvb/adapter0/dvr0 > file.ts
                     39: 
1.3     ! jruoho     40: At some point break the pipe. If the output file is empty, something is wrong.
        !            41: Otherwise you can try to play it with `mplayer`.