Screen Recording Audio and Video Different Lengths

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  • Updated 5 months ago
I just recorded a podcast that was around 1 hour, 38 minutes long. The recording has three tracks, the screen, the system audio (the others on the cast) and my microphone.

Screen: 1:37:51.28
Mic: 1:38:00.16
System Audio: 1:38:01.06

When I drag the audio down to match the screen length, it's still out of sync.

Ideas?
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Mike Hammett

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Posted 6 months ago

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Dubie

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When you say "drag the audio down to match the screen length"

Are you dragging the end of the audio track to be the same length as the video?

If so that won't work.

You need to drag the audio track back and forth to match it up to the video and than cut out the extra length where ever it might be.

Sometimes when recording voice audio your mic might have recorded a little earlier than the start of the video or was recorded a little more than the video so you may find you just need to cut a bit off the start or end of the audio.

Thats the short and sweet of it.


:)
(Edited)
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Mike Hammett

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So just fiddle with it?
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Dubie

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Basically yep. There is no auto sync option.
Editing 101
:)
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rg

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One day in the future, editing software will see (recognize) a face, detect the on-camera speaker's lips moving, and automatically re-sync audio to match the lips by hitting "P" to "P" or something like that.  (But of course, as it does this, it will also glitch and rotate the colors to be 22.5 degrees out of phase.)
(Edited)
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Mal Reynolds

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One other thing that I've found as well, for what it's worth; the longer you pause something, the more likely it is to drift out of sync. It doesn't happen all the time, but I've found it to be more likely. If you're doing that hour and a half in one continuous sitting without pause it shouldn't be an issue. (I've noticed that the longer my recording, the more likely it is that I'll get different length tracks but if I haven't paused they usually aren't out of sync.) However if I need to stop for more than a minute or so I'll generally save the recording to date and start a new one for the next section rather than pausing it.
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Mike Hammett

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Okay, I must have a different problem than what you guys are thinking of or I have not understood it.

The video and two audio tracks are all at different lengths. Something I didn't mention before is that there are no dead spaces. The audio just extends longer. I need to compress its total time by nine seconds. Same content just takes up 9 seconds less time.
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Mike Hammett

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Okay, so I've come across clip speed. It's getting me close, but not perfect. I can't get just the right number of seconds\frames to match everything up, but it's close.
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Fred Grover, Champion

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Mike Hammett would it be possible for you to upload some screenshots of what you are working on or showing your timeline and letting us know what you were recording on your screen ? For example was it a powerpoint with animations, webcam, still images etc. or a combination of them all ?
Also, is it only the audio from your mic that is out of syncor the system audio ? If possible if you can share the upload of your project somewhere for us to view it might help but from what it sounds like without that have you tried reducing your screen video using the drag from beginning or end and then maybe moving the Audio Track using the Shift Key and sliding only that track to line things up ? If you are using still images it may be easier to line everything up. Sometimes it takes a lot of practice in Editing to get things correct and in some cases it may be a whole re-record but with yours not being off in the timing by what you posted then I would guess it should be fixable.
Clip Speed can be very useful but when using that if it is on the audio you may have to be careful as it will also change the pitch and make you sound like a chipmunk or robot with a almost dead battery. Just my suggestions and hope some of them help.

Thanks for posting and have a great day/night and let us know how things turn out or if you can upload what you have for us to see.
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Mike Hammett

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Fred Grover, Champion

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Mike Hammet that is a huge zipped file of 8.82GB which might take me a bit to download and get too. I was wondering if you had already had it uploaded online somewhere or not too ? If not I will try to get to this sometime this week unless someone else jumps in here on this one. Maybe we can find out what is going on. So, is this one the project before you did any editing for syncing up your audio and video or is it the file after you did the editing and trying to sync up the audio and video ?
I was also going to add that when it comes to projects of this size and lengths that it is easy to get things out of sync. So, with that being said I have another suggestion for you too. Have you tried editing the audio and video and getting it synced up in smaller selections and then try Producing that selection and when you have them all completed bring them back into the Camtasia Editor and then doing the Producing/Rendering to the format yous want ? This is something else you can try on your side. Let us know if that works at all too.
And last but not least which Version of Camtasia are you using and can you give some specs on your computer setup ? Like Memory, OS (Operating System), CPU, etc. ?
Thanks and have a great day/night.
(Edited)
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Kevin Mojek, Employee

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I took a look at the project. If you start with just the unedited TREC file, add clip-speed to the two audio tracks and then use the clip-speed trim handles to adjust the lengths of the audio tracks to match the video track, everything appears to be in sync. I am checking to see if this is a known bug but that seems to be a work-around, at least for this project.
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Mike Hammett

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I did use clip speed to get them as close as I could. There seems to be some limit to the precision of the clip speed tool. I couldn't get all tracks to line up perfectly due to the lack of precision. 
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Mike Hammett

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@Fred

6 Core AMD Phenom processor, 32 GB of RAM, 4x HDDs in a RAID 10 running WIndows 7.
Camtasia 9.

I dare not cut it up into smaller pieces because each piece will have the same issues, just smaller.

The project file is the version after I applied clip speed.