Slow Motion VP 19

fr0sty wrote on 6/18/2022, 10:18 PM

try setting resample to optical flow in project settings. Then for slomo, hold ctrl while dragging the right edge of the clip to the desired length.

Or set the framerate in the media properties to 24p if you aren't trying to further slow it down, since it's already 120fps.

Former user wrote on 6/18/2022, 11:21 PM

I'm a long time Vegas user (started with V. 4 or 5) and recently upgraded from VP 13 to 19. In VP 13 if I wanted slow motion video I would take a clip (1080 120p 1/1/25th shutter Nikon Z mirrorless) time stretch it to .20 (20%) playback/oversample, render the project out at 24p and get nice slow motion video (resample disabled). In VP 19, the same clips look choppy and not smooth at all.

Use conform to set values precisely so all your frames show and should be smooth at 24fps, then drag to reveal full clip, don't stretch

I'm still on VP19(532) not the latest build

Former user wrote on 6/19/2022, 12:34 AM

Actually that video I uploaded above is not smooth slow motion, and I've worked out why, when using the conform function Vegas does not correctly conform 119.88fps to a 24fps timeline, it's conforming for a 23.976timeline that we aren't using creating a timing problem that can be seen when optical flow is used. First half is slowing down the video I just uploaded, 2nd half is using 23.976 timeline. Watch the bird

Although I don't know if this is your problem, I don't think anything changed with conform

john_dennis wrote on 6/19/2022, 12:54 AM

@24Peter

In Vegas Pro 14, a function was added to the right-click context menu when media is added from Project Media, "Add At Project Frame Rate". Life can be much simpler, now.

RogerS wrote on 6/19/2022, 2:59 AM

I usually "add at project framerate" and then use velocity envelopes to speed up as desired.

24Peter wrote on 6/19/2022, 11:51 AM

@24Peter

In Vegas Pro 14, a function was added to the right-click context menu when media is added from Project Media, "Add At Project Frame Rate". Life can be much simpler, now.

This is the solution that seems to work best. Thanks John! (I don't use the Project Media tab to add clips - I usually add directly from Explorer tab - so never noticed this.)

john_dennis wrote on 6/19/2022, 12:42 PM

@24Peter

"Thanks John! (I don't use the Project Media tab to add clips - I usually add directly from Explorer tab - so never noticed this.)"

You're quite welcome. For me, adding media to the "Media Pool" is a very old habit.

john_dennis wrote on 6/19/2022, 1:12 PM

Here's an analysis of how frames are distributed when 119.88 fps video is "Added At Project Frame Rate" for various Project frame fates

119.88 FPS

89.91 FPS

59.94 FPS

50 FPS

29.970 FPS

25 FPS

24 FPS

23.976 FPS

Former user wrote on 6/19/2022, 7:07 PM

24 FPS

23.976 FPS

@john_dennis We seem to be glossing over the part where this doesn't work when conforming to timeline using the media properties of the file, which is how many people do it. So it's broken or misunderstood?

john_dennis wrote on 6/19/2022, 9:31 PM

@Former user

"We seem to be glossing over the part where this doesn't work when conforming to timeline using the media properties of the file..."

I'm not glossing over anything. Notice that Vegas Pro adds a velocity envelope to the event on the timeline for Project Frame Rate settings below 1/4 of the frame rate of the media.

25 FPS

24 FPS

23.976 FPS

While, if one Conforms To Project Frame Rate, the Velocity Envelope reverts to 100% from 80% in the case of the 23.976 Project Properties.

If you want perfection without having to deal with this, render your source files to a PNG Still Image Sequence (which have no frame rate) and injest the stills into a project of any frame rate you choose.

Former user wrote on 6/19/2022, 9:44 PM

@john_dennis I worked on the assumption that when the poster said his project was 24fps, he really meant that, not 23.976, and also his 120fps was actually 119.88fps, I don't know if either is true, but that's not important. It's not possible to correctly confiorm 119.88fps to 24fps using file properties. That is why I showed the seagull in 4x optical flow slow motion. if timings are not perfect optical flow is not smooth, but it did work correctly for conform to 23.976

This is surely a trap many will find themselves in?

I will use your technique in the future, I never knew it existed

24Peter wrote on 6/20/2022, 12:31 PM

@john_dennis I worked on the assumption that when the poster said his project was 24fps, he really meant that, not 23.976, and also his 120fps was actually 119.88fps, I don't know if either is true, but that's not important. It's not possible to correctly confiorm 119.88fps to 24fps using file properties. That is why I showed the seagull in 4x optical flow slow motion. if timings are not perfect optical flow is not smooth, but it did work correctly for conform to 23.976

This is surely a trap many will find themselves in?

I will use your technique in the future, I never knew it existed

FWIW - my project settings were 23.976 and the clip was 119.88. The point I was trying to make was that in VP 13 , changing the event's Media properties or Crtl dragging the end of a clip on the timeline to change the playback rate of the affected clip resulted in smooth playback/rendering of the affected clip. This is not the case in VP 19. From what I can see, the only way to get the same end result is to use John's solution. To the Magix developer team: personally I'd see to it work the way it did in VP13, or at least give me a right click option in the Explorer tab to "Add at Project Frame Rate." And for clarification, I am attempting to change the playback rate in the event's Media properties from 119.88 to 23.97. The result is smooth when I use the Add at Project Frame Rate and not at all smooth when I change in the event properties for what seems to me to be the exact same settings.