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DasAlteLeid
DasAlteLeid
Participating Frequently
August 26, 2018
Answered

SlowMotion Recording -> Normal Speed in PP Doesn't Work

  • August 26, 2018
  • 3 replies
  • 2711 views

Hi all,

so, I guess I have a big thinking barrier right now.

I've recorded footage with the URSA Mini 4K.

Camera settings:

Project framrate: 25 fps

Off speed recording: 50 fps

Shutter: 180 (mostly)

In windows it says the footage is 25 fps and when played back it is slow motion as it is supposed to be. So far so good.

Now I import all media with the media browser into my PP project and "create a new sequence from clip".

Sequence settings:

Editing mode: RED Cinema

Timebase: 25 fps

(Video) Display format: 25 fps Timecode

Now I would like to have some of the footage played back in normal speed again.

I right click on a file in the timeline and choose "Speed/Duration" and change the speed to "200 %". This should double the speed of the video to normal speed again.

So my logic is:

Recorded 50 fps -> 200 % speed -> 25 fps playback

(as 25 is the half of 50)

But this doesn't work as it is supposed to. It plays back faster, but is still a bit slower then normal speed.

Is "250 %" the correct setting? If yes, why? I can't try out every setting, because this would be guesswork and I'd like to have perfect normal speed.

I hope someone can help me with this one, I'm sure it's just a thinking barrier.

All the best,

Paul

This topic has been closed for replies.
Correct answer Meg The Dog

paulk78477015  wrote

It plays back faster, but is still a bit slower then normal speed.

How are you ascertaining this?

Suggestion would be to duplicate the source clip in the project panel (click on the clip to select it, go to the menu Edit > Duplicate), then, working on the copy:

Select the copied clip and change the clip name to "{clip name} Normal Speed".

Right click on the clip and from the drop down menu choose Modify > Interpret Footage . . . and when the Modify Clip panel opens, on the Interpret Footage Tab > Frame Rate click the radio button for Assume this frame rate and set the frame rate to 50fps, then click OK.

Now you have two clips in the bin - one running in Slow Motion (the original clip) and the other running at what should be real time (the copy). Use each as needed.

If the modified copy is not running at real time you may have other issues.

MtD

3 replies

M
Meg The DogCorrect answer
Inspiring
August 26, 2018

paulk78477015  wrote

It plays back faster, but is still a bit slower then normal speed.

How are you ascertaining this?

Suggestion would be to duplicate the source clip in the project panel (click on the clip to select it, go to the menu Edit > Duplicate), then, working on the copy:

Select the copied clip and change the clip name to "{clip name} Normal Speed".

Right click on the clip and from the drop down menu choose Modify > Interpret Footage . . . and when the Modify Clip panel opens, on the Interpret Footage Tab > Frame Rate click the radio button for Assume this frame rate and set the frame rate to 50fps, then click OK.

Now you have two clips in the bin - one running in Slow Motion (the original clip) and the other running at what should be real time (the copy). Use each as needed.

If the modified copy is not running at real time you may have other issues.

MtD

    DasAlteLeid
    DasAlteLeidAuthor
    Participating Frequently
    August 26, 2018

    https://forums.adobe.com/people/Meg+The+Dog  schrieb

    paulk78477015   wrote

    It plays back faster, but is still a bit slower then normal speed.

    How are you ascertaining this?

    It just feels weird and looks slow motion. With the "Interpret Footage" option I was able to compare both clips. Turns out, the clip with the "Speed/Duration" change was normal speed regarding the lengh of the clip. But compared to the "Interpret Footage" clip, there is a shadow-like effect which makes the clip look slowmotion although it is not. This has maybe to do with the shutter angle.

    Anyway, with the "Interpret Footage" solution the 'slow motion effect' is gone and the footage looks as it is supposed to.

    Your and juanmarios solution has worked! Thanks guys!

    juanmario
    juanmario
    Participating Frequently
    August 26, 2018

    I agree with Jim, if the goal is to make a slow motion, capture at the highest frame rate the camera allows and then handle it in postproduction.

    As far as your problem was concerned, if the camera really captured 50fps to play at 25fps, what you should do to reproduce it at normal speed is after importing, in the project panel click on the right "modify-Interpret footage" and in "Assume this frame rate" 50, this should be corrected if it does not work the values in the source file are erroneous.

      DasAlteLeid
      DasAlteLeidAuthor
      Participating Frequently
      August 26, 2018

      juanmario  schrieb

      I agree with Jim, if the goal is to make a slow motion, capture at the highest frame rate the camera allows and then handle it in postproduction.

      As far as your problem was concerned, if the camera really captured 50fps to play at 25fps, what you should do to reproduce it at normal speed is after importing, in the project panel click on the right "modify-Interpret footage" and in "Assume this frame rate" 50, this should be corrected if it does not work the values in the source file are erroneous.

      Thank you! I'll try that

      E
      excited_Genie16B8
      Legend
      August 26, 2018

      I would like to have some of the footage played back in normal speed again.

      I think that's the error right there.  If you want real time playback, shoot it that way.  If you want slow motion, shoot it that way.

      In other words, you make this decision on set, not in post.

      DasAlteLeid
      DasAlteLeidAuthor
      Participating Frequently
      August 26, 2018

      Thanks for your fast response.

      I need some of the footage played back in slow motion, because some movements need to look smoother (slower) then they actually are. This is critical. The rest should be in normal speed, without cutting to a different camera(angle).

      So my decision on set was to record in slow motion.

      Are you saying it is not possible to play back 50 fps footage in normal speed?

      E
      excited_Genie16B8
      Legend
      August 26, 2018

      I'm saying if you want real time playback, shoot it that way.

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