Audio and video out of sync

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  • Updated 4 years ago
I loved the software right up to the last minute, when I uploaded a video I made and the audio and video are out of sync. This is not the case with the same video in iMovie. I submitted a service request, and I am waiting for a response before making a purchase decision. I hope you can help me fix this, because I was excited about the features and ease of use, but if my own videos can't be made to work, it's of no value.
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Peter

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Posted 6 years ago

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Logan S.

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Hey Peter,

See if this article helps: https://support.techsmith.com/entries...
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Peter

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It does not help. As I explained, I am running Camtasia for Mac, and you sent me to a Windows article. There seems to be dozens of entries with people complaining about this issue with Camtasia, and not much response from the company. Since this is so critical to the functionality of the software, I won't buy without an answer to the problem. PLEASE take the time to offer a solution for the Mac version. Thank you for your time.
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Logan S.

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Hey peter, sorry about that. I meant to link you to this article, pertaining to Camtasia for Mac: https://support.techsmith.com/entries...
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motoready1

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4 months--I have the same problem and still no solution. This link pertains not to imported but to internal camera video. I imported video (MOV) from my Nikon D7100--both audio and video from the camera. And they are grossly out of sync yet the video plays fine in quicktime. It will not play in sync in camtasia 2. This function is key to my purchase as well. Is there any resolution to this problem. If not I will not/cannot purchase.
Thanks
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George Alexander

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It is ridiculous that this issue is NOT BEING ADDRESSED BY CAMTASIA. I don't want to have to jump through 20 hoops and add HOURS to completing projects that should take a fraction of the time. This is an opportunity for a competitor to step in and I am actively searching and on alert to find something that works as it is supposed to without adding hours to my work day.
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Vishal

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George, I completely agree. TechSmith, wake up!
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Amy

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So any updates on this issue?  I just downloaded a trial version and loved the program until I ran into this same problem.  The program is no use to me if the syncing doesn't work.
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Vishal

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Amy, I did find the problem and it appears like it is not the software, rather the microphone that i was using for the recording. When i use the mic built into the laptop, there is no lag. My naive theory is that the video capture aided by the software is functioning much faster than the sound gathering through the mic which would explain the lag in the sound. One possible reason is that the mic has a long cord and depending on the material used in the cord, sound transmission may be slow. 
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cangarough42

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I've encountered that when rendering into *.avi files, and I've worked this around by exporting to .mp4 instead.
I'm not a specialist, but as I understand it, when an avi file is produced, the video and the sound threads do not have any marks that would put these threads into a strict correspondence in time. Prior to production, both threads are processed (e.g. simplified to reduce the size). As long as they are processed separately and a bit differently, this results in gradual desync of the sound and the video. The two are put together into the AVI file. As a result, at the start of the video, the sync is fine, but then it regresses. In 5 minutes it could desync for a second or more.
If your desync increases in the similar way, this may be your case, too. My solution was to try other formats.
Maybe TechSmith team could improve the process of avi generation and introduce some thread sync verification?
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Randseed Bin

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This is making sense to me, but my problem occurs when I do a live video screen capture using the Camtasia recorder. There are only 2 recording formats (from what I could see): either TREC or AVI. I believe the TREC format is just a TechSmith AVI Codec, so I don't have your option available to me.
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cangarough42

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What if you tried to use the "Clip speed" tool on the video or the audio to match their sizes? Then you could put them together in a separate project.
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Amy

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Thank you guys so much for the suggestions.  Unfortunately I think it is a bit more in my case.  The video in question was recorded using my Nikon 7100 and the sound is fine when viewed on iMovie, Aperture and even Quicktime.  It is only when I am in Camptasia that the sound is off sinc.  I've actually tried three different video's since my original post and all of them are off sinc. 

Any other suggestions would be greatly appreciated.  I'm very new to video, so it could definitely be user errors, but based on my usage in other programs am pretty sure there is a larger issue.
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Randseed Bin

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My situation is somewhat similar. When I screen capture a live action window (from a webcam) the audio seems to be recorded at a slightly faster speed than the video. For example: I record for exactly 60 minutes, and when I import the TREC file into the editor, it displays a full 60 minutes of video on the timeline, but only 59 minutes of audio. The only solution I have found it to make multiple splits along the audio track and insert frames of silence while leaving the video track intact. Needless to say, this makes for a very long and annoying editing session.

Update: Someone suggested changing the frame rate in the recorder from 30 to 15 fps. That didn't help at all in my case.
(Edited)
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lee

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I just bought this product. I am no stranger to Camtasia, having used it often during my career in academia. But it was a Windows-only product then, and I was looking forward to seeing Camtasia on the Mac.

What an incredible disappointment this is. I've made two attempts to record audio along with a fairly brief screen capture of just a web browser window, and the audio is completely out of synch with the video. It's almost like there is a full 30 seconds or so of audio missing at the very beginning of each test segment I've done. I've used both my internal mic and great quality Apogee Mic with the same results.

As I said, incredibly disappointing. I feel like I'm due a refund unless this problem can be solved.

-- Lee
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lee

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After posting a tech support ticket, the support technician asked me to recreate the problem, and I went back into and rebooted my system and kept all other apps closed, except for email.

Everything worked fine this time, and the sound stayed in synch throughout the 3:15 video capture. I'm not sure what did the trick -- rebooting or keep all apps closed -- but it's working now. I'll report back if it doesn't.

-- Lee

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