<p>Use linear interpolation when enabled (the default). Disable it if you want
to preserve speed instead of quality when exact_rational fails.
</p>
</dd>
<dt><samp class="option">exact_rational</samp></dt>
<dd><p>For swr only, when enabled, try to use exact phase_count based on input and
output sample rate. However, if it is larger than <code class="code">1 &lt;&lt; phase_shift</code>,
the phase_count will be <code class="code">1 &lt;&lt; phase_shift</code> as fallback. Default is enabled.
</p>
</dd>
<dt><s