+
+ <section id="log">
+ <article>
+ <header>
+ <time>17 September 2025</time>
+ <h3>Speed up video in FFmpeg</h3>
+ </header>
+
+ <pre><code>ffmpeg -i input.mkv -vf "setpts=PTS/60" -an output.mp4</code></pre>
+
+ <ul>
+ <li><code>-i input.mkv</code> input file</li>
+ <li><code>-vf "setpts=PTS/60"</code> video filter, set <a href="https://en.wikipedia.org/wiki/Presentation_timestamp" target="_blank">presentation timespamp</a></li>
+ <li><code>-an</code> no audio (unless you speed up audio too, the output's length will stay the same)</li>
+ <li><code>output.mp4</code> output file and format</li>
+ </li>
+ </article>
+ </section>
+ </body>