CFR or VFR : Does it matter if you use music for your video ?

Community Beginner ,
Apr 08, 2021 Apr 08, 2021

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Hi everyone !

 

I'm a new user of PP and I'd like to create a short movie using footage of ancient films I have on my computer. A part of them are VFR according to Media Info, and I read that it could be a problem when editing since the audio could be desynchronized with the video. But since I won't be using the audio of the original video and add some music over it instead, does it matter if this footage is VFR ? Will I have trouble getting the video and audio synchronized ? I'd like to know before really working on that project.

 

Thanks a lot for your help.

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Audio, Editing, Export

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correct answers 1 Correct Answer

Adobe Community Professional , Apr 08, 2021 Apr 08, 2021
Premiere will interprete the footage with the given framerate which is not a standard framerate. You won't notice this in the timeline. The export will be with a standard constant framerate resulting either the video going either slower or faster then the audio.   You need to test this for yourself to understand the concept.

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Adobe Community Professional ,
Apr 08, 2021 Apr 08, 2021

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It may still be an issue.

Other issues may arise as well.

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Community Beginner ,
Apr 08, 2021 Apr 08, 2021

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quote

It may still be an issue.

Other issues may arise as well.


By @Peru Bob

 

Like what kind of issues ?

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Adobe Community Professional ,
Apr 08, 2021 Apr 08, 2021

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quote

 I'd like to know before really working on that project.

 

By @Rémi5C95

 

Trial and error. The Best way especially if you are new to PP.

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Community Beginner ,
Apr 08, 2021 Apr 08, 2021

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I'd be interested to know why it could be an issue. The video varies in terms of frame rate, okay, but since the music doesn't come from the video and just plays along with it, how can the two be desyncronized when I export?

I'm sorry if it is obvious, I just try to understand it all.

 

Thanks for your help

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Adobe Community Professional ,
Apr 08, 2021 Apr 08, 2021

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Premiere will interprete the footage with the given framerate which is not a standard framerate.

You won't notice this in the timeline.

The export will be with a standard constant framerate resulting either the video going either slower or faster then the audio.

 

You need to test this for yourself to understand the concept.

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Adobe Community Professional ,
Apr 08, 2021 Apr 08, 2021

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I agree with Ann and PeruBob ... we've all had much experience personally and "on here" with VFR media. It's unpredictable at best, period. It might work. Many of my Samsung S9 files will work, but a few will not. So I do the obvious time/frustration saver, and simply batch-convert to CFR using the free utility app, HandBrake.

 

Then I know it will all work as expected first time every time.

 

Neil

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Community Beginner ,
Apr 08, 2021 Apr 08, 2021

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Okay great, thank you for your advice, I'll use Handbrake then.

 

One more thing though, I used MediaInfo to check the frame rate of several files but for some of them MediaInfo does not indicate if they are VFR or CFR. It says how many frames per second, for example 25/s but doesn't say more. Should I consider those films as CFR then ?

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Adobe Community Professional ,
Apr 08, 2021 Apr 08, 2021

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Probably.

 

Neil

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Community Beginner ,
Apr 08, 2021 Apr 08, 2021

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Thanks for your help

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Adobe Community Professional ,
Apr 08, 2021 Apr 08, 2021

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@Peru Bob said it all.

 

I just wanted to comment, I found another free program that is really excellent - Shutter Encoder - and I like it much more than Handbrake, (I have no connection to either). Check this out I think the interface is nicer, and it produces ProRes, Cineform and DNxHD/HR. Plus many other options and even downloads online vidoes. Check it, it's sweet. 🙂

https://www.shutterencoder.com/en/

 

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Adobe Community Professional ,
Apr 08, 2021 Apr 08, 2021

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Just watched the video ... thanks for posting, MyerPj ... gonna try that out myself.

 

Neil

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