How to speed up video while preserving audio pitch

  • 1
  • Idea
  • Updated 6 months ago

Speeding up a talking-head video by 5 to 10% can make it more lively and interesting. When doing this, it is important to preserve the pitch of any spoken audio so that it doesn’t distort the speaker’s voice.


As has been explained by others, this can be done by stripping out the audio and changing the tempo in Audacity before reinserting it back in Camtasia after adjusting the duration of the video.


As I mentioned in an earlier post, it is tiresome to do this as it adds several more steps to the video production process, especially as it can be quite difficult synchronising the lip movements with the audio track.


I am amazed that this is not included as a standard feature in Camtasia for Windows, especially considering the cost of the regular upgrades!


I have discovered that this is done quite simply in a competing product as shown in this video clip:


Hopefully seeing how easily this can be done by others will spur Techsmith into adding the same capability to Camtasia.
Photo of leighwilson


  • 2 Posts
  • 3 Reply Likes

Posted 6 months ago

  • 1
Photo of Joe Morgan

Joe Morgan

  • 7392 Posts
  • 4038 Reply Likes
TechSmith is full aware of the functionality.
Camtasia for Mac has had this feature for 7 years.Its getting it incorporated into Windows that's needed.

Shane Lovellette, Employee
  • 257 Posts
  • 39 Reply Likes
I have good news! This feature is implemented in Camtasia for Mac 2.1 which released April 24. Clip Speed is one of the new features in this release, and it speeds up or slows down both video and audio without changing the pitch. Simply drag and drop it onto a clip on the timeline, and you can adjust the speed. You can learn more about the release here:

While Camtasia Studio does have clip speed, it does not have the ability to not change the pitch for sped up audio. This is under consideration for a future release of Camtasia Studio.

Best Regards,
Shane Lovellette

24 April, 2012: Camtasia for Mac 2.1.0
  • Added clip speed to allow compressing or expanding the duration of a clip