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Don't use 'do-timestamp=true' with audiotestsrc. It will not do the
right thing.<br>
<br>
Cheers<br>
-Matt<br>
<br>
<div class="moz-cite-prefix">On 8/12/20 5:12 pm, jim nualart wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAE9FXWK7wAwFZnwxVnb08077ui=ywKi6zD-K-OQBunOysD9Chg@mail.gmail.com">
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<div dir="ltr">Hi,
<div>Hoping that someone can shed some light on this...</div>
<div><br>
</div>
<div>The following pipeline results in a file with gaps every 5
seconds:<br>
export TESTSOURCE1="audiotestsrc wave=0 volume=0.8
is-live=true do-timestamp=true samplesperbuffer=480"<br>
export SINK="wavenc ! filesink location=test.wav"<br>
</div>
<div>timeout 60 gst-launch-1.0 $TESTSOURCE1 ! audiomixer ! $SINK<br>
<br>
If you open the resulting wav file (e.g., in audacity), there
are gaps every 5 seconds.</div>
<div><br>
</div>
<div>If you remove the audiomixer from the pipeline, there are
no gaps. If you use an adder (instead of the audiomixer),
there are no gaps.</div>
<div><br>
</div>
<div>I've looked at logs (GST_DEBUG=audiomixer:6), and there are
no obvious errors/warnings/etc.</div>
<div><br>
</div>
<div>I realize that the audiotestsrc is not really a live-source
and I'm not sure how well it behaves as such. But I am
actually troubleshooting a similar issue using an alsasrc
instead. I am hoping that if I understand what's going on
here, it will help on the other issue. (For the issue with the
alsasrc, I've gone so far as to write the data to files; one
at the src of the element feeding the audiomixer, and one at
the src of the audiomixer itself -- the first shows no gaps,
while the later does show gaps.)</div>
<div><br>
</div>
<div>Many thanks in advance to any advice.</div>
<div>-jim </div>
</div>
<br>
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