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        <p>Hello,</p>
        <p>I use dvblast to stream a program from an ATV radio-amateur
          repeater (<a class="moz-txt-link-abbreviated"
            href="http://www.hb9tv.ch">www.hb9tv.ch</a>) through ffmpeg
          to a club streamer (<a class="moz-txt-link-freetext"
            href="https://batc.org.uk/live/">https://batc.org.uk/live/</a>).</p>
        <p>Following changes in the ATV relay settings, I no longer have
          a permanent stream coming from program 1000 and I need to
          detect this state to ensure that ffmpeg works properly.</p>
        <p>Thanks to the --print-period option, I have information on
          the bitrate of the stream and this allows me to detect if the
          program is being transmitted.<br>
        </p>
        <p><br>
        </p>
        <p>Program 1000 present:<br>
        </p>
        <p><font color="#ff8000"><b>bitrate: 1359565</b></font><br>
           - program number 3000 bitrate: 1<br>
           - program number 1000 bitrate: 53<br>
           - program number 2000 bitrate: 1<br>
          frontend ber: 0 strength: 44975 snr: 59367 uncorrected: 0</p>
        <p><br>
        </p>
        <p>Program 1000 absent:</p>
        <p><font color="#ff8000"><b>bitrate: 27072</b></font><br>
           - program number 3000 bitrate: 1<br>
           - program number 1000 bitrate: 1<br>
           - program number 2000 bitrate: 1<br>
          frontend ber: 0 strength: 44204 snr: 59110 uncorrected: 0<br>
        </p>
        <p><br>
        </p>
        <p>My problem, I am unable to retrieve this information in a
          file... I have tried the ways below with no success :<span
            lang="en"><br>
          </span></p>
        <p> </p>
        <p>dvblast -C -r /tmp/dvblast.sock --print-period 50000 -c
          hb9tv1.conf --frequency 1760000 --symbol-rate 4000000
          --fec-inner 56 -v 18 | tee -a bitrate.txt</p>
        <p>dvblast -C -r /tmp/dvblast.sock --print-period 50000 -c
          hb9tv1.conf --frequency 1760000 --symbol-rate 4000000
          --fec-inner 56 -v 18 2>&1 | tee bitrate.txt</p>
        <p><br>
        </p>
        <pre class="tw-data-text tw-text-large XcVN5d tw-ta" data-placeholder="Translation" id="tw-target-text" style="text-align:left" dir="ltr"><font size="+1"><span lang="en">The information (bitrate) appears on the console and in the file randomly by block of 22 x the bitrate information... 
opposed to every 5s on the console without the redirection.

Not being in the programming profession, I am stuck... Could you please put me on the trail of the solution ?
</span></font></pre>
        <span lang="en"></span>
        <div class="tw-ta-container hide-focus-ring tw-nfl"
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          <pre class="tw-data-text tw-text-large XcVN5d tw-ta" data-placeholder="Translation" id="tw-target-text" style="text-align:left" dir="ltr"><span lang="en"><font size="+1">Thank you in advance for your advice.

Best regards,
Michel

P.S.  dvblast run on a rasperry 3</font>
</span></pre>
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          <pre class="tw-data-placeholder tw-text-small tw-ta" data-placeholder="" id="tw-target-rmn" style="text-align:left" dir="ltr"><span>
</span></pre>
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        <br>
        <pre class="moz-signature" cols="72">--------------------------------------------------
Michel Burnand   -   HB9DUG   -   <a class="moz-txt-link-abbreviated" href="mailto:hb9dug@vtxnet.ch">hb9dug@vtxnet.ch</a>
Rue de la Dude 22    CH-1267 Vich      Switzerland
Phone +41 22 995 0661
--------------------------------------------------</pre>
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