title: What's right way to change playback speed with ffmpeg?
body: <p>In my project i'm using ffmpeg to playback media. Currently I'm trying to implement changing of playback speed. Will it be right to drop certain packets at high rates, for example <strong>not</strong> keyframes ? Or I should rely only on changing timestamps and duration, even if performance is low(for example 4k video) and as a consequence increased speed isn't noticable ?</p>