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Audio and Video Synchronize

Specific to Premiere Elements version 2023

Audio and Video Synchronize

Postby tedco » Sun Apr 09, 2023 12:47 am

Using Adobe Premiere 2023 under Windows 11, I have problems with audio/video synchronizing.

In the video, a person starts speaking but the sound is half a second delayed.

The original files are VOB and if I open an unedited file in VLC, the synchronizing is perfect.
If I then add a few VOB files to Premierer Elements without any editing and Export as mp4, it is out of synch.

On another note, is it possible to join mp4 files, and if so, how ?
I know I can join VOB files from a Command Prompt as "copy /b VTS_01_1.VOB + VTS_01_2.VOB JOINED.VOB"

Any help is as always greatly appreciated,
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Re: Audio and Video Synchronize

Postby Steve Grisetti » Sun Apr 09, 2023 7:31 am

VOBs should edit natively in Premiere Elements. Though I have out of sync issues often too.

What happens if you convert the VOB to an MP4 using the instructions in my video?

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Re: Audio and Video Synchronize

Postby tedco » Mon Apr 10, 2023 1:04 am

Hi Steve,

Thank you for your reply.

Converting in HandBrake from VOB to mp4 seems to have fixed the problem.

I have a number of VOB files named as VTS_01_1.VOB, VTS_01_2.VOB, VTS_01_3.VOB etc in format of 720 x 576 pixels and 25.0fps from digitized vhs tapes.

If I run them through HandBrake and combine in Premiere Elements 2023, they are correctly synchronized, unlike if combining VOB files.

Another question I have is, when using Quick Export, the format becomes 640 x 480, which is fine but the frame rate has changed from 25 fps to 29.7fps.

Does that make any difference to the quality ?

I know I can use Custom Export, and would think I should select the "MP4 - HD 720p 25fps", but am confused as to what the 6Mbps, 10 Mpbs or 15Mpbs are and which would be the right one.

Unfortunately, your book The Muvipix.com Guide to Adobe Premiere Elements 2023 is unavailable in Amazon....

Thank you for your help and support
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Re: Audio and Video Synchronize

Postby Steve Grisetti » Mon Apr 10, 2023 8:00 am

VOB files are 720x480 animorphic pixels -- which is essentially 640x480 square pixels. Neither that nor the frame rate will affect the quality of your output.

Just using the standard quality setting should give you video that is nearly identical to the original without inflating the file size.

I'm not sure why you say my book isn't available on Amazon though. It certainly is.
https://www.amazon.com/Muvipix-com-Guid ... 109&sr=8-1
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Re: Audio and Video Synchronize

Postby tedco » Tue Apr 11, 2023 1:04 am

Thanks for your reply, Steve,

I'll be using the Standard Quality Settings, as you recommended.

As far as your book, Amazon's page shows the paperback of your book is not available, but the Kindle version is.

Hopefully it'll be back soon,

Thanks again.
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Re: Audio and Video Synchronize

Postby Steve Grisetti » Tue Apr 11, 2023 8:35 am

Are you outside the USA, Tedco?

When I click on the link above it says the book will be delivered by Friday. (It's print on demand so it's never out of stock, technically.)
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Re: Audio and Video Synchronize

Postby tedco » Wed Apr 12, 2023 12:15 am

Hi Steve,

Yes, I am in Australia, but as mentioned Amazon USA list it as Not Available.

However, I have your Premiere Elements 11 book, which I purchased some years ago.

I might try to place an order and see what happens,

Thanks for your help,
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Re: Audio and Video Synchronize

Postby janetr » Sun May 07, 2023 10:26 am

you are a life saver Steve. I've spent ages adding in various B rolls to a video that was synced fine initially, but in spite of rendering several times the last few minutes were out of sync. Putting it into hanbrake took care of that.
Now I can go back to it and add the rest of the b-rolls.
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Re: Audio and Video Synchronize

Postby Steve Grisetti » Sun May 07, 2023 7:25 pm

Great news, Janet!
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