Video and Audio speeds when recorded separetly and synched

Ken480

Member Joined: Oct 27, 2015 01:15 Messages: 51 Offline

Solved by

Jan 29, 2017 22:05

I routinely record a separate audio track for my videos and synch it to the video, which is easy to do.

What I'd like to do is find an easier way to 'speed up' both the video and audio. Currently, I can't seem to do this. I can speed them both up using their respective speed adjustments, and they end up being equal time in the timeline. But the audio ends up 'drifting away' from the video even though they are identical in length.

I've tried copying the audio and pasting it into the video, but then I lose the ability to use the Power Tools to change the speed. Right now, my only option is to forgo any speed changes, produce the video, then edit the results. This is a huge time burden as the production can run into hours. Then to just make one small adjustment and produce it all over again is just out of the question.

What am I not thinking of?

Carl312

Senior Contributor Location: Texas, USA Joined: Mar 16, 2010 20:11 Messages: 9090 Offline

Jan 29, 2017 22:29

Quote I routinely record a separate audio track for my videos and synch it to the video, which is easy to do.

What I'd like to do is find an easier way to 'speed up' both the video and audio. Currently, I can't seem to do this. I can speed them both up using their respective speed adjustments, and they end up being equal time in the timeline. But the audio ends up 'drifting away' from the video even though they are identical in length.

I've tried copying the audio and pasting it into the video, but then I lose the ability to use the Power Tools to change the speed. Right now, my only option is to forgo any speed changes, produce the video, then edit the results. This is a huge time burden as the production can run into hours. Then to just make one small adjustment and produce it all over again is just out of the question.

What am I not thinking of?

If your separate audio file is of the variable rate MP3 type, it is known that Powerdirector can and often will 'drift' the audio sync.

The cure is to use WAV format audio files. Carl312: Windows 10 64-bit 8 GB RAM,AMD Phenom II X4 965 3.4 GHz,ATI Radeon HD 5770 1GB,240GB SSD,two 1TB HDs.

Ken480

Member Joined: Oct 27, 2015 01:15 Messages: 51 Offline

Jan 29, 2017 22:31

Converting them to .WAVs is an easy thing to do, but that still doesn't address my issue of wanting to speed both the audio and video up without two productions.

Ken480

Member Joined: Oct 27, 2015 01:15 Messages: 51 Offline

Jan 29, 2017 23:55

Oh, wait. My brain was idling too roughly.

I get it now. Using a .wav instead will prevent the drifiting. So I can speed up the video, check the clip's running time, then edit the audio to match it.

Sorry, sometimes I'm a bit dense. I'll give that a try.

Ken480

Member Joined: Oct 27, 2015 01:15 Messages: 51 Offline

Jan 30, 2017 20:41

Well, that didn't work. Converted the audio to a .WAV and synched & edited it to match the timeline of the video. Still tends to drift. About 1 second per minute of video.

Carl312

Senior Contributor Location: Texas, USA Joined: Mar 16, 2010 20:11 Messages: 9090 Offline

Jan 31, 2017 10:08

Quote Well, that didn't work. Converted the audio to a .WAV and synched & edited it to match the timeline of the video. Still tends to drift. About 1 second per minute of video.

I have no idea why.

You might contact Cyberlink Support.

https://www.cyberlink.com/support/index.html Carl312: Windows 10 64-bit 8 GB RAM,AMD Phenom II X4 965 3.4 GHz,ATI Radeon HD 5770 1GB,240GB SSD,two 1TB HDs.

ShakerAwaiting

Newbie Joined: Sep 01, 2015 16:12 Messages: 5 Offline

Jan 31, 2017 13:35

I record other audio also ... and sync. I haven't wished to speed up audio yet, but if I did, I would do all my editing and then, just before speeding up the video-audio and productioning the final product, I would

1)export just the audio (which is quick and easy). (I often use Audacity to edit my video audio)

2) I would then adjust the video (only) speed/length)

3) Then I would open that exported audio in Audacity (a great freeware audio editing program) and in Audacity I would change the length of the audio to exactly match the length of my sped-up video. (very easy and quick to do).

4) export the sped up (or slowed down) audio from Audacity as WAV and then imort that WAV file into your PD project.

5)They shoould match perfectly, ready to produce your final product.

Ken480

Member Joined: Oct 27, 2015 01:15 Messages: 51 Offline

Jan 31, 2017 14:40

Quote I record other audio also ... and sync. I haven't wished to speed up audio yet, but if I did, I would do all my editing and then, just before speeding up the video-audio and productioning the final product, I would

1)export just the audio (which is quick and easy). (I often use Audacity to edit my video audio)

2) I would then adjust the video (only) speed/length)

3) Then I would open that exported audio in Audacity (a great freeware audio editing program) and in Audacity I would change the length of the audio to exactly match the length of my sped-up video. (very easy and quick to do).

4) export the sped up (or slowed down) audio from Audacity as WAV and then imort that WAV file into your PD project.

5)They shoould match perfectly, ready to produce your final product.

Egads.... that sure looks like a very convoluted, roundabout way to do it. I have plenty of editing software to do this exact same thing, but when you have dozens of audio files to keep track of, this sounds like a nightmare.

Silly me..... I just edit the audio so it matches the length of the video right in PD15. If I speed up a video from 16:07:02 and it ends up at 15:24.19, I just edit the audio to the same 15:24.19. Sadly, although they are exactly the same length on the timeline, the audio doesn't line up with the video at the ends of the clips.