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TOPIC: Audio out of sync

Re: Audio out of sync 2 years, 1 month ago #176461

  • megnagaming
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  • 2 years, 1 month ago
Also confirming the beta fixes this for me as well!

Re: Audio out of sync 2 years, 1 month ago #178077

  • LiteSaber
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I just installed Lightworks 14.0.0 for the first time today, created a new project (with files that seem to have slightly variable frame rates) and imported files that play fine in the Windows Move and TV app are seriously out of sync. I should add that when first imported, they play back at about twice the proper rate (both video and audio). But once I adjust the speed to 50 percent, they sound fine, but are out of sync. I can't tell if they are out of sync when first imported, because the speed is too fast to tell.

Re: Audio out of sync 2 years, 1 month ago #178083

  • hugly
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Hello and welcome!

You've most likely encountered a known issue with 60 fps footage in mixed rates (or 24 fps) projects (the speedup). Furthermore it could be that the sync issue is caused by your footage being recorded in variable frame rate mode which isn't supported with V14.0 properly.

As you maybe have (or maybe have not) read in the posts above, there's a fair chance to get both problems fixed with Lightworks V14.5. You'll find most recent V14.5 beta under Downloads on top of this page. Install it, create a new project, import your media and see what happens.
It's better to travel well than to arrive...
Last Edit: 2 years, 1 month ago by hugly.

Re: Audio out of sync 2 years, 1 month ago #178093

  • LiteSaber
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Thanks for that; unfortunately, I miswrote - I installed the 14.5.0.0 beta in the first place, not the 14.0.0 as I originally reported. I am looking at third party software to convert from variable frame rate to constant frame rate now. I'll just batch convert my raw input files and then hopefully the problem syncing video with audio within Lightworks will be solved.

Re: Audio out of sync 2 years, 1 month ago #178094

  • jwrl
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Have you tried setting up a 60 fps project and importing into that with VFR correction applied? You shouldn't need any extra software. Click on the project title at the top left corner of the screen, and from the drop down menu that appears select "Video > Output". Make sure that "Apply VFR Correction" is set to "Yes".

Then import your media.
Last Edit: 2 years, 1 month ago by jwrl.

Re: Audio out of sync 2 years, 1 month ago #178107

  • hugly
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LiteSaber wrote:
I installed the 14.5.0.0 beta in the first place, not the 14.0.0 as I originally reported.

Oops! Then, my assumption about possible causes is most likely wrong. Converting the footage prior to import should be the right way to correct, but depending on the nature of your footage, specific software and settings might be needed.

In order to give you some meaningful advice on software and settings, would you mind positing a Mediainfo report of your original footage together with some information how it's been captured/recorded? Here you'll find information on how to create and post mediainfo: www.lwks.com/index.php?option=com_kunena&func=view&catid=23&id=66072&Itemid=81
It's better to travel well than to arrive...
Last Edit: 2 years, 1 month ago by hugly.

Re: Audio out of sync 2 years ago #178537

  • LiteSaber
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  • 2 years ago
I was able to resolve my problem by using EyeFrame Converter 1.8.1. This is a free, open source, program, although, according to the site from which I downloaded it, it is no longer being maintained by its developer.

However, it was specifically designed to convert variable frame video for input to Lightworks, and it worked perfectly for me. I downloaded the final released version (1.8.1) here:

eyeframeconverter.wordpress.com/download/

Within that program, after adding all files to be converted, I marked all files and then used the Edit menu to change the frame rate of them all to 30 fps. It kind of looks like you are changing the input files, but in fact this change affects the output files only. I then performed the convert, and all resulting files imported very nicely into Lightworks, and there was no problem with the synchronization of audio to the video.

FYI, the original video was cell phone video taken some time ago on my old Galaxy S4 phone, which produces variable frame rate MP4 files at an average rate of about 16.65 FPS.

Re: Audio out of sync 1 week ago #221157

  • Ciaran_
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Hi,
I don't know if this is still relevant, or if it has already been solved, I haven't read the entire thread, but I'm working on the latest version of Lightworks, similarly editing clips I've made in games, (modern warfare) and I ran into the same problem. However, if when creating the project you select the 'mixed' option in the framerates tab, it eradicates the issue entirely.
Hope this helps.
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Re: Audio out of sync 1 week ago #221158

  • briandrys
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Welcome to the forum.

It depends on the frame rates of the media you're importing. If you've got one frame rate throughout, don't use the mixed frame rate, use the correct frame setting for that media, otherwise you risk adding an artifact of some kind.

The mixed frame rate is actually 24fps.

With V2020.1 (the current release), if your variable frame rate media has a non standard target frame rate, you will probably need to convert to a standard one before importing.
Last Edit: 1 week ago by briandrys.

Re: Audio out of sync 1 week ago #221159

  • Ciaran_
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I'm new to this, so I don't fully understand what u mean, but what I got from that was that if u haven't got variable frame rates don't use the function, and if Ur frame rates are reeeealy weird u might still have to convert. Is this right?

Re: Audio out of sync 1 week ago #221160

  • briandrys
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When you run a Mediainfo analysis on a variable frame rate video you'll get a max and minimum frame rate, plus you'll get the target frame rate. Usually the latter is one of the film and TV industry standard frame rates e.g 25fps, 29.97 fps,30fps, 50fps etc, but sometimes videos are a bit off in the original recording, e.g. 29.54fp and that can throw things out.

You use the variable frame rate in Lightworks if that's what you've recorded, but as usual it's not a perfect world.

Note that a mixed frame rate isn't the same as a variable frame rate. Applying VFR correction is in a separate menu, but usually it's selected as default,
Last Edit: 1 week ago by briandrys.

Re: Audio out of sync 1 week ago #221161

  • Ciaran_
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  • 1 week ago
Ok thank u
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