====== ffmpeg - Video - Speed Up ======

<code bash>
ffmpeg -i input.mp4 -an -filter:v "setpts=0.1*PTS" output.mp4
</code>

<WRAP info>
**NOTE:**

  * **0.1** accelerates x10 by dropping frames, 0.01 would accelerate x100 and so on.
  * **-an** removes audio.

</WRAP>

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===== Use a complex filter to speed up video =====

<code bash>
ffmpeg -i input.mkv -filter_complex "[0:v]setpts=<1/x>*PTS[v];[0:a]atempo=<x>[a]" -map "[v]" -map "[a]" output.mkv
</code>

<WRAP info>
**NOTE:**  w/ audio, where <x> is the speedup ratio.
</WRAP>

----

For example, to speed up the video by 1.5 times the original speed, use:

<code bash>
ffmpeg -i input.mkv -filter_complex "[0:v]setpts=0.6667*PTS[v];[0:a]atempo=1.5[a]" -map "[v]" -map "[a]" output.mkv
</code>

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