Ask Different is a question and answer site for power users of Apple hardware and software. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

i have inserted a high frequency audio (more than 18000Hz) into a Movie, it is to test if children can hear that frequency during my video presentation. However, iMovie does not allow anything above a certain frequency to be exported.

I have tried exporting as Quicktime: I used the following sound settings

Linear PCM

but when i click on preview and use a sound analyzer, it still doesn't detect the frequency.

Someone please help

share|improve this question
which version of iMovie? – Stu Wilson Apr 6 '12 at 16:10
iMovie '11 is the current one i'm using – zerlphr Apr 6 '12 at 16:38

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.