I noticed that audio is always longer than video even when I don't pause and so I think what is happening is audio is being recorded longer each record session and so after each pause these longer audio recordings causes audio to progressively become more out of sync.
That problem should be very easy to fix. I think the audio at the end past the length of the video could be clipped off after each pause so that video and audio remain same length and thus in sync.
It requires way too much editing to be worth it if I can't pause recordings so I hope you guys get it fixed soon otherwise I'll have to learn a more complicated alternative to Camtasia.
If you're concerned that fix may have disadvantages because some people may want to shift the audio to the left then at least provide the fix as an option in recording settings.
Not sure about the mic audio. I don't think I used my mic until after I knew of this issue and stopped using pause.
Also pause 20 times to ensure you see the problem. If you pause only once or twice you may not notice the problem.
Looks like camtasia does not like FPS of 29.97 fps or 23.98 fps. Looks like it rounds up to 30 fps and 24 fps respectively.
Solution: Run the video through http://www.macroplant.com/adapter/ (it is free) to change the frame-rate. This will fix the issue.
I figured I should weigh in on this issue, as I struggled with the same thing on my ~90min. video, and read all of the posts of frustrated viewers in trying to find a solution.
My project was a continuous camera-shot video with audio, that I interspersed with cutaways to screen capture content placed on a separate track. I too noticed that sync started out fine, than deteriorated over time to approximately one second at the end of the file.
I won't go into the details of my troubleshooting efforts, but the fix that had the best success was to make multiple (~10) splits of the audio, removing about 10 frames at each split. I made sure that these splits were in periods of silence (background noise only) and were 'hidden' by the breakaway screen capture segments. I am not sure if removing the frames was necessary, but my reasoning was that it would allow for 'expansion' of the audio clip as needed due to any sync issues.
In the end, that worked great. I think the theory is that - if sync is good at the BEGINNING of an audio/video segment, then the solution to ensuring sync across a long video is to artificially generate multiple audio/video BEGINNINGS via the splits.
my preferred workaround is to put clip on timeline, separate audio from video, then apply clip speed adjustment to the audio clip [like 99%], which gives you the green bar; then drag the end of the audio clip [grab green bar] until the audio & video are better aligned at the end of the video; usually only about 1 to 2 seconds of adjustment will be required
To work around this, I shoot the video in short sections, edit each section, do a final edit to make the tracks all end at the same point, make an MP4 of the section, then pull the MP4s into a overall project that needs no editing.
It's a pain, but this approach produces usable content.
brandnew laptop still dropped frames and audio video out of sync.
Hello, I'm having trouble with webcam video and audio that is out of sync. I've read a lot about it here. But I want to know: is it normal to have 400 to 700 dropped frames when you are recording with webcam size 320 x 240 and USB headset attached on a brandnew Dell latitude E7440 with SSD and still have audio and video getting out of sync after a few minutes? I already disabled GPU acceleration. Thanks Robbert
check my settings below:
Audio distortion and slow down.
I'm running Camtasia 8.3 and just recently when I use the Record Camera option the audio it records sounds as if it is slowed down to 1/4th it's natural speed. However, this slow down only happens 2+ minutes into a recording.
In other words, everything starts out fine. Audio and video are synced correctly, but after some time passes, the audio will distort and slow to a crawl.
I'm recording with a Yeti Microphone, I have tried without and the same problem occurs. I have also tried a reinstall and the problem continues. I have also adjusted kHz for the audio to any number of them without success.
To Camtasia Devs: Try screen recording Candy Crush Saga gameplay with dozens of recording pause/resumes and I bet you'll get audio seriously out of sync especially at the end of the video.
I think the audio recording is always a little longer in duration than video during each period of recording. When each subsequent recording is appended after each unpause the issue becomes compounded.
The workaround solution we've had to painstakingly do is separate the audio onto it's own track and then break it up every 4 minutes at a silent point. And then we advance the next audio clip a 1/4 of a second or so and then repeat the process... it's stupid to do and time consuming, but it is somewhat of a workable solution for now.
I do hope to hear if others are still having audio sync issues... especially those who have longer videos 30 minutes or more. And we do hope Camtasia does resolve this soon, but we are already on the look out for something else right now.
I'm sorry you are having trouble.
Currently we do not have any open bugs for the behavior you describe.
We would like to get more information from you about your projects, source files, etc. Can you please open a support ticket so we can look into what is causing this out-of-syn issue?
TechSmith technical support is a free service and you can submit a ticket here:
Or call: 1.517.381.2300
Toll Free: 800.517.3001 (U.S. & Canada Only)
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Thanks so much.
I was just looking into another post and something you said in your post caught my attention.
You say you are getting your videos from another source and those get out of sync. Here is what another person posted as a solution to their videos from another source being tinny sounding or out of sync:
In this thread someone stated that Camtasia Studio requires a bit rate of 128 kbps audio at a sample rate of 44.1 kHz. The MP4s that I am using are converted from Webex ARF files. The resulting MP4 is created at 17 kbps bit rate and 8 kHz Audio Sample Rate. If I take this file and import into Handbrake and convert the audio and video together with the audio set at 128 kbps bit rate and 44.1 kHz Audio Sample rate, the issue is resolved once I take the file that Handbrake creates with these settings and import it into Camtasia.
If you are having this issue, please make sure that you check you MP4, if it is less than 128 kbps bit rate and 44.1 kHz you will have the audio trouble once you import to the Camtasia timeline.
So, I was wondering if you converted your videos before bringing them into Camtasia, if that would solve your issue?
Maybe give this a try and let us know.
We just wanted to let those following this thread know that we have a fix for the audio syncing issue which will be our in the next release of Camtasia Studio.
While I don't know the exact date of that release, it should be out by the end of Q3 of this year.
In the meantime, if you are experiencing a sync issue with long videos on your timeline, we have found adding a split to the clip every few minutes will eliminate that problem. While this is not a fix for the bug causing this, it is a workaround that seems to work for most people.
We apologize for the issue and and trouble this has caused. Please be aware we working on resolving this issue and are committed to getting it out to you as soon as we can.
Love the software, but does not work with lengthy web cam + audio recordings :(
Until it's fixed, if anyone knows of alternative software which records web cam, audio and screen capture without issue, please let me know.
I have two solutions that consistently resolve my audio/video sync issues. I work with converted Canon files (to mp4) almost exclusively:
1) If I am working with one set of files (from one camera only), separating audio from video and inserting simple audio splits every 5 minutes does the trick. Takes about 2 minutes to do this for a 2 hour video.
2) If I am working with 2 sets of files (from two cameras), I need to line the two audio tracks up at the beginning, and progress through to ensure that they are synced throughout the full duration. Frequently this involves making <15frame cuts to both audio and video every now and then. Sacrifices nothing in terms of quality, assuming my camera edits are done strategically.
Works every time.