MOV file audio not in sync in timeline but syncs in production

  • 1
  • Problem
  • Updated 2 years ago
I recorded a video on my iphone and had a RODE VideoMic GO plugged in for audio. When I play the video on my phone or on my computer the audio and video match. When I import the file in camtasia, the audio does not sync. However when I produce it, it is in sync. This is fine but makes editing difficult.

Any reason why this happens? 
Will the upgrade fix this? 

I'm using Camtasia 8.6
iphone 6
RODE VideomicGO external mic
Photo of sabrinaely

sabrinaely

  • 4 Posts
  • 0 Reply Likes

Posted 2 years ago

  • 1
Photo of Mark W4CHL

Mark W4CHL

  • 66 Posts
  • 13 Reply Likes
Run the video through Handbrake first and generate an MP4. Camtasia Studio 8.6 is MUCH better at previewing and rendering and maintaining synch with MP4 multimedia files.
Photo of Bob Lewis

Bob Lewis

  • 353 Posts
  • 174 Reply Likes
The audio might be a Variable (VBR) bit rate.
If so you would need to convert to Constant (CBR)(fixed) bit rate Audio. 
And/Or   Your Video could be Variable Frame Rate
Handbrake is a good idea. In the video Tab select Constant Frame Rate.
Audacity is good if you only need to change the Audio. 
Photo of sabrinaely

sabrinaely

  • 4 Posts
  • 0 Reply Likes
Thanks for the handbrake recommendation. I'm a bit confused on the audio and video settings within camtasia. I have attached what I see on my end. I don't see the option for "constant frame rate."

Also, I have used audacity to record audio in the past but can you tell me what you would do when you load audio in? I'm not even sure where to start to correct it, will an import and export just resolve it?
Photo of Bob Lewis

Bob Lewis

  • 353 Posts
  • 174 Reply Likes
Hi sabrinaely,
Camtasia only  produces to Constant Frame Rate, they call it Static frame rate.
What ever frame rate you choose remains the same for the entire video. 1-30 at this point 60 to come soon I hope.