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

Forum|Forum|4 years ago
April 8, 2021
3 replies
1301 views

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.

This topic has been closed for replies.

Correct answer Ann Bens

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.

R Neil Haugen

Legend

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

Everyone's mileage always varies ...

R

Rémi5C95Author

Known Participant

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 ?

R Neil Haugen

Legend

Probably.

Neil

Everyone's mileage always varies ...

Ann Bens

Community Expert

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.

R

Rémi5C95Author

Known Participant

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

Ann Bens

Correct answer

Community Expert

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.

Peru Bob

Community Expert

It may still be an issue.

Other issues may arise as well.

R

Rémi5C95Author

Known Participant

It may still be an issue.
Other issues may arise as well.

By @Peru Bob

Like what kind of issues ?

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