Mixing 23.976 and 119.88 rates

[Francois Pénzes]

Hi Vincent

If you render the problematic part, do you get the same thing and get it only in the preview window ?

Cheers !

PC Win 10 Pro 64-bit 16gb Intel® Core™i7-2600k Quad Core 3.40GHz
Cameras: Canon XF305 + Canon XH-A1
Blackmagic HyperDeck Studio Mini
Vegas Pro 16, User since Vegas 3.0

\’\’When the cutting stops, the editing begins…\’\’

[Vincent Levalois]

It manifests in the rendered file. I haven’t checked to really pay attention in the Preview window only because I ignore most issues there and chalk it up to performance more than codec or file compatibility with the timeline.

Windows 10 / Vegas Pro 15

[George Dean]

Vincent@” However, if I have mostly 24p clips and I want to add some 120p, I’ve got a problem when exporting to 23.976. Jaggedy slow mo video is the result.”

Hi Vincent,

First I’m going to make an assumption that both your 119.88 and 23.976 footage are progressive.

As you probably know, the slowest Vegas will go is 1/4 or 25% by setting the Playback rate in event Properties. Because 24.976 will devide evenly 5 times into 119.88, you would need 20% to produce smooth slow motion without the need for some type of optical flow interpolation.

Vegas Pro 15 has a Velocity Envelope that will go way down to 1 frame. If you adjust the Velocity Envelope to 20%, then stretch out the event 5 times the length, you should get very smooth slow motion from your 120p footage in a 24p project.

So, ‘Disable Sampling’ and use the ‘Velocity Envelope’ (right click event for this option), does that look better?

BTW: using the default track height, I find making fine adjustments to an Envelope very difficult, so for this adjustment I will drag down the edge of the track and expand it’s height a bunch, make the Envelope adjustment and then set the track height back to normal.

Best Regards……George