After rendering my project, the audio and video do not sync up

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  • Updated 3 years ago
After creating a project and producing it, the video and audio do not sync up correctly.

If it helps, I originally recorded the video interviews I did were in 15 FPS (I know now this was not wise).

Even after using custom production settings and dropping the settings to 15, I still am having no luck. Any suggestions?
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Jerry Truman

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Posted 3 years ago

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Timbre4, Champion

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Hello,

What was the recording made with? If the recording is VBR (variable bit rate) it can easily get out of sync, unlike CBR (constant bit rate). If so, there are tools to correct this (convert VBR to CBR). The most popular option is called Hand Brake as found here: https://handbrake.fr/


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Jerry Truman

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Thanks for the help Timbre! I'll check that out.

I made the recording with Evaer and Skype. Any idea how I can know if it was VBR or CBR?
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Bob Lewis

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Try Mediainfo 

http://www.videohelp.com/software/MediaInfo

If Mediainfo  gives you an Average Bitrate it is VBR. If it gives you Bitrate it is CBR. 

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Timbre4, Champion

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Great tip on mediainfo! Thanks
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Jerry Truman

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Thanks rlinternational2!

Once I download Mediainfo, I'm not able to open the file. Does it run inside a program? Or perhaps is there an issue with my computer? (I'm running Win10, if it matters)
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Jerry Truman

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Timbre4 - I'm using handbrake, however twice now it gets stuck at 6.58% completed for 7 minutes.

The only two things I changed were to constant framerate and the FPS to 12:



Is there anything else you think needs adjusted?
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Joe Morgan

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Have you confirmed the audio is VBR?
Even if you haven't I suggest you just convert the audio using Camtasia and be done with it. See my post below for details. If you need further advice just ask.

Regards, Joe
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Timbre4, Champion

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Usually works like a charm; try Joe's advice on the convert with Camtasia.
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Joe Morgan

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Hey Jerry,
there's an easier way

You can convert the audio using Camtasia. You don't need a separate program for that.

 Camtasia will export audio to .wav 44,100Hz at 16 bits CBR. That just happens to be Camtasia's favorite frequency and format to edit with as well. 

All you need to do is export the audio as a .wav file and use the that file to replace the audio on the timeline. See Image Below.


If you have more than one audio track you will want to export the tracks separately so that you can adjust the volume and edit each file individually if need be.
Follow these steps for that.

Regards, Joe

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Jerry Truman

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Hey Joe,

After trying this process out, I don't seem to be having any success. Here is what I've tried so far that has not worked:
1. Produce and share the video as MP4 up to 1080
2. Export audio as .wav, add the .wav back in, and produce and share video as MP4 up to 1080 (which is what I think you suggested)
3. Export audio as .wav, add the .wav back in, and produce and share video, customizing the frame rate to 12 FPS (the video setting shows the video at this rate).
4. Produce and share the video, customizing the frame rate to 12 FPS.

For whatever reason, 3/4ths of the videos worked fine without doing any major changes (i.e. attempts 2, 3, and 4). However, other videos do not work when trying any of the above scenarios.

Any ideas?
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Joe Morgan

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It may be the source files from Evaer that is creating the problem. However, that's just a guess at this point.

I would contact tech support and see if they can sort this out for you. I'm out of ideas.

This is a Free Service. Submit a ticket at,

https://support.techsmith.com/hc/en-us/requests/new


Or call, >>> 1.517.381.2300

 Toll Free: 800.517.3001 (U.S. & Canada Only)

8:00 AM to 7:00 PM EST Monday through Friday

Regards, Joe

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Bob Lewis

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Hey Jerry, Joe has got the best solution.

The Medainfo only lets you know the file info and Metadata type info. As to your question about running Mediainfo, there are 2 types of downloads. 1 ends in .iso which you could load. The other is a .zip (.7z which needs WinZip)  I found an .exe file that loads it in my Windows 10 computer if you still want it, at http://sourceforge.net/projects/mediainfo/files/ .
but use Joe Morgan's tip to actually fix the problem files.