Video speed (Power tool) question

cyberwill

Newbie Joined: Aug 31, 2014 00:54 Messages: 3 Offline

Solved by

Aug 31, 2014 01:12

Hello,
Is it possible in Powerdirector 12 to switch off the preserve pitch button when changing the speed of a video clip and keep the audio? I noticed it seems to mute the audio, making an assumption that I don't want to hear the audio being played back at a slower speed and pitch. I've looked at some videos that link me to older versions of Powerdirector that seem to allow this functionality. I have noticed you can export your audio in to an external editing program to apply effects that would equate to the same thing, but this seems like a needless time consuming operation to do something that other video editing tools allow with a single click... Am I missing something here? Would purchasing Audiodirector allow this to work?

bolda

Member Location: Liberec, Czech Republic Joined: Feb 02, 2011 15:10 Messages: 96 Offline

Aug 31, 2014 03:06

Hi there,

Try 'unlinking' video and audio if they're together (right-click menu) and the audo has its own Power Tools (when selected) where you can change the Audio Speed; however only twofold.

You could obviously achieve a higher increase in speed using a stand-alone audio editing application, such as Audacity for free. One way or another, needless to say, the audio's pitch is bound to change as well, so the limitation of a twofold change appears quite reasonable for most projects to me...

This message was edited 1 time. Last update was at Aug 31. 2014 03:10

cyberwill

Newbie Joined: Aug 31, 2014 00:54 Messages: 3 Offline

Sep 01, 2014 03:00

Quote:
Try 'unlinking' video and audio if they're together (right-click menu) and the audo has its own Power Tools (when selected) where you can change the Audio Speed; however only twofold.

In my experience this did not actually change the pitch of the audio.

if -.5x and +2.0x are the limits imposed by Powerdirector that's fine (you'd be able to recursively render somehow) but this isn't about audio speed, but audio pitch (and really this shouldn't require unlinking from the video either)

Cheers

bolda

Member Location: Liberec, Czech Republic Joined: Feb 02, 2011 15:10 Messages: 96 Offline

Sep 01, 2014 04:03

I complicated it in my post.

You are right about the pitch. PowerDirector seems to keep it unchanged in audio clips with changed length. This is actually a nice feature.

And you're also right that unlinking video and audio is not
necessary as long as the multiplier doesn't exceed 2.

However, you'd have to adjust the audio outside PowerDirector at higher speed increases. WaveEditor can only increase the speed by 2 again. AudioDirector's highest multiplicator is 10 and there it is about the pitch compensation: it explicitely warns you that the pitch is only maintained at a multiplier up to 2. Increasing speed of audio produced with already increased speed but preserved pitch should work around the limit but probably doesn't make much practical sense, right?

This message was edited 1 time. Last update was at Sep 01. 2014 05:24

cyberwill

Newbie Joined: Aug 31, 2014 00:54 Messages: 3 Offline

Sep 01, 2014 04:22

Quote:
You are right about the pitch. PowerDirector seems to keep it unchanged in audio clips with changed length. This is actually a nice feature.

This is really all I'm trying to raise in this forum post. Yes its great that it will preserve the pitch and sensible that this option is switched on by default - but how do we turn it off and let the audio play between -.5 and +2.0x pitch? This is not a big ask - pitch and time are normally bound to one another - its technically more difficult from a programming perspective to preserve pitch!