<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi,<div class=""><br class=""></div><div class="">Try adding “-x text” to your dvblast command-line. This should turn on line-buffering.</div><div class=""><br class=""></div><div class="">Best regards<br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On 17 Nov 2020, at 08:34, Michel Burnand <<a href="mailto:hb9dug@vtxnet.ch" class="">hb9dug@vtxnet.ch</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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<div class="moz-text-html" lang="x-unicode"><p class="">Hello,</p><p class="">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 class="">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 class="">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 class="">
</p><p class=""><br class="">
</p><p class="">Program 1000 present:<br class="">
</p><p class=""><font color="#ff8000" class=""><b class="">bitrate: 1359565</b></font><br class="">
- program number 3000 bitrate: 1<br class="">
- program number 1000 bitrate: 53<br class="">
- program number 2000 bitrate: 1<br class="">
frontend ber: 0 strength: 44975 snr: 59367 uncorrected: 0</p><p class=""><br class="">
</p><p class="">Program 1000 absent:</p><p class=""><font color="#ff8000" class=""><b class="">bitrate: 27072</b></font><br class="">
- program number 3000 bitrate: 1<br class="">
- program number 1000 bitrate: 1<br class="">
- program number 2000 bitrate: 1<br class="">
frontend ber: 0 strength: 44204 snr: 59110 uncorrected: 0<br class="">
</p><p class=""><br class="">
</p><p class="">My problem, I am unable to retrieve this information in a
file... I have tried the ways below with no success :<span lang="en" class=""><br class="">
</span></p><div class=""> <br class="webkit-block-placeholder"></div><p class="">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 class="">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 class=""><br class="">
</p>
<pre class="XcVN5d tw-text-large tw-ta tw-data-text" data-placeholder="Translation" id="tw-target-text" style="text-align:left" dir="ltr"><font size="+1" class=""><span lang="en" class="">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" class=""></span>
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<pre class="XcVN5d tw-text-large tw-ta tw-data-text" data-placeholder="Translation" id="tw-target-text" style="text-align:left" dir="ltr"><span lang="en" class=""><font size="+1" class="">Thank you in advance for your advice.
Best regards,
Michel
P.S. dvblast run on a rasperry 3</font>
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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 class="">
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<br class="">
<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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