user22386: I have the code below I want it to automatically increment up like this:
(t, 30,33) and (t, 60,63), (t, 90,93) and so on it adds 30 units.
     ffmpeg -i in.mov -vcodec copy -af "volume=enable='between(t,30,33)':volume=0"out2.mov


user1871: Use
-af "volume=enable='gte(t,30)*lt(mod(t,30),3)':volume=0"


22386: <p>I have the code below I want it to automatically increment up like this:<br>
<code>(t, 30,33)</code> and <code>(t, 60,63)</code>, <code>(t, 90,93)</code> and so on it adds <code>30</code> units.</p>

<pre><code>     ffmpeg -i in.mov -vcodec copy -af "volume=enable='between(t,30,33)':volume=0"out2.mov
</code></pre>
 1871: <p>Use</p>

<pre><code>-af "volume=enable='gte(t,30)*lt(mod(t,30),3)':volume=0"
</code></pre>
