Audio loss on variable speed

[Cantisque]

I am aware that the audio from a movie that has variable speed is cut, but why?

Even basic video editors like Windows Movie Maker can keep the audio and slow it down.

Short of recording the audio from a scene in Audacity, slowing it down manually and importing it into VS, followed by fiddling around to the the timings just right, is there any easier way to slow-mo both a video and the accompanying audio?

[BrianCee]

Yes you can do it all in VideoStudio

first split video and audio - right click over video and choose "split audio" from the pop up.

change the speed of the video

click on the sound block in the audio track - hover your mouse cursor over the yellow handle at the right hand end - it will change to a sideways arrow.

left click the mouse and hold down the 'shift' key while you drag right to make the sound track exactly the same length as the image track.

continue with your project.

[lata]

Hi

Are you referring to Variable Speed or Timelapse.

Variable Speed will allow you to vary the speed throughout the video, changing the speed rate as the video plays, audio is removed.

Timelapse will allow you to set a constant speed, 50%, 200% etc, audio will play.


Does Windows MM have Variable Speed options or is the speed fixed?

[Cantisque]

Thanks guys!

Timelapse was the option I should have been looking for.

Not a major problem but an odd one, if I set the speed of the video to 50% it will play slow but the audio pitch will stay as normal, but if I use 25% the audio pitch lowers. Is this intentional?

[BrianCee]

Not sure from your answers what you are doing - time lapse - when you take a picture every few seconds then replay at normal speed will make everything go faster - and audio will be jumpy as you only have a little bite of audio every few seconds and you would need to add a completely new audio track.

But if as I thought you said in the first place you are slowing down - to make slo-mo by varying the speed - to make a standard video play longer then the answer I gave above will solve your problem.