Adding 50fps video to a 60fps timeline

YodaVonBeck wrote on 9/10/2023, 3:09 PM

Hey :)

I have been trying to find explanations for this, but cant really seem to find some on Youtube, so turning to the braintrust here :)

It should be fairly simple, but I can seem to crack it. I have some 50fps and 30 fps videos.
I am targeting a 60fps timeline.

How do I add the 50fps video material in a way, where it will not stutter, but simply change its speed in playback to conform with the 60fps?

Some guides suggested to Disable resample on the project and then go into the properties of the clip and select Disable resample as well, but when I render the video I still get some stutter.

Do anyone have the definitive guide on how to make this work?

Comments

fr0sty wrote on 9/10/2023, 3:15 PM

Since 50 doesn't evenly divide into 60, the only way is to interpolate frames (can't just double frames like you can with 30fps without getting blur/jitter). So, Opitcal Flow resampling is your only hope of pulling it off smoothly. You can set this in the project settings of modern versions of VEGAS under resample mode.

Robert Johnston wrote on 9/10/2023, 9:43 PM

@YodaVonBeck Try this. Assuming your project is set to 60 fps. Right-click on the 50-fps clip in project media, then select "add to timeline at project framerate." That will place the clip on the timeline. Try playback with and without resampling on.

EricLNZ wrote on 9/10/2023, 11:28 PM

Right-click on the 50-fps clip in project media, then select "add to timeline at project framerate.

The downside of doing this is your clip's video and audio will now be speeded up by 1/6 of a second i.e 17% which may not be acceptable.

3POINT wrote on 9/11/2023, 1:39 AM

Right-click on the 50-fps clip in project media, then select "add to timeline at project framerate.

The downside of doing this is your clip's video and audio will now be speeded up by 1/6 of a second i.e 17% which may not be acceptable.

How do I add the 50fps video material in a way, where it will not stutter, but simply change its speed in playback to conform with the 60fps?

But exactly what @YodaVonBeck wants.

For example, I speed up my drone footage even from 30fps to 50 fps that way.

YodaVonBeck wrote on 9/11/2023, 2:02 AM

Right-click on the 50-fps clip in project media, then select "add to timeline at project framerate.

The downside of doing this is your clip's video and audio will now be speeded up by 1/6 of a second i.e 17% which may not be acceptable.

How do I add the 50fps video material in a way, where it will not stutter, but simply change its speed in playback to conform with the 60fps?

But exactly what @YodaVonBeck wants.

For example, I speed up my drone footage even from 30fps to 50 fps that way.

This is what I wanted to achieve :) I will give it a try and let you know how it works :)

relaxvideo wrote on 9/11/2023, 2:02 AM

Downside?

Op wrote:

"but simply change its speed in playback"

EricLNZ wrote on 9/11/2023, 5:09 AM

But exactly what @YodaVonBeck wants.
For example, I speed up my drone footage even from 30fps to 50 fps that way.

Thanks @3POINT I overlooked that.

3POINT wrote on 9/11/2023, 7:10 AM

But exactly what @YodaVonBeck wants.
For example, I speed up my drone footage even from 30fps to 50 fps that way.

Thanks @3POINT I overlooked that.

If speeding up or slowing down is no problem, this is the easiest and quickest way to get smooth video at other framerates. No ghosting or stuttering images or strange FX due to resampling/no resampling or optical flow.

YodaVonBeck wrote on 9/11/2023, 2:36 PM

Right-click on the 50-fps clip in project media, then select "add to timeline at project framerate.

The downside of doing this is your clip's video and audio will now be speeded up by 1/6 of a second i.e 17% which may not be acceptable.

How do I add the 50fps video material in a way, where it will not stutter, but simply change its speed in playback to conform with the 60fps?

But exactly what @YodaVonBeck wants.

For example, I speed up my drone footage even from 30fps to 50 fps that way.

This is what I wanted to achieve :) I will give it a try and let you know how it works :)

Okay, so this is how I got it to work:

1) Disable Resample in the Project (Dont actually know for sure if this is required)

2) Add the 50fps clip to the 60fps timeline

3) In the clip Properties:
- Disable resample
- In the Playback rate, click "Conform to project frame rate"

The result is that the "project frame rate" changes from "1.000" to "1.199".
This is good, because it also allows me to change to a slower speed by setting it to half : "0.599"
It also does not add a Velocity effect, which game me issues.

Thanks for your help :)

3POINT wrote on 9/11/2023, 2:46 PM

@YodaVonBeck

1. Disable resampling: not necessary.

2. Make sure projectframerate is set to 60fps and a 60fps event is on the timeline.

3. Right mouseclick the 50fps video in the media tab and choose "add at projectframerate".

That's all.

Robert Johnston wrote on 9/11/2023, 3:04 PM

@YodaVonBeck If you do it the way you did, your clip probably repeats itself, where you see a notch at the top of the event in the timeline. Also, your audio will be out of sync as conforming video to project frame rate does nothing to the audio.

YodaVonBeck wrote on 9/12/2023, 4:39 AM

@YodaVonBeck If you do it the way you did, your clip probably repeats itself, where you see a notch at the top of the event in the timeline. Also, your audio will be out of sync as conforming video to project frame rate does nothing to the audio.

Correct, it will loop if I don't manage the length of the clip - learned that bit as well :)
As for audio, it does not matter, because I replace the video audio with either separate narration or music :)