Hi Nationalsolo and Borate,
please be aware: The orignal file ("6 Peer Hockey oben2.mp4" included in the zip file) has 240fps. This was the setting of the camera and this value is stated in the properties displayed by windows. And if I replay this file in the VLC media player at 0.12 speed, it looks super smooth. Even at 0.06, there is only very slight jerkyness, which is in agreement with about 15 updates per second. And this is what I want my VP export to look like.
If you change the preview settings in VP to 240fps, you will see that the original clip in the bin contains about 240 unique frames, i.e. no copies, one every 4 milliseconds.
When we now change the clip speed to 12.5% VP ads 7 copies of every frame. This indeed results in a slow motion and an 8 times longer clip length while maintaining the preview settings of 240fps. Hence, so far everything is fine.
Now, if I export, I get the same result as described in my post from yesterday: Jerky with about 4 updates per seconds for 30 fps and half as jerky with about 8 updates per second for 60 fps (this is what Borate did).
In conclusion: Even though the the original clip in the bin has 240 fps, which should result in a smooth 12.5%-slowmo (with 30 updates per second), VP exports a jerky result by first reducing the frame rate to the export value and THEN applying the speed change. Performing it the other way around would result in the desired outcome.
Is there any way to change the order of these rendering steps? As I stated earlier, I used to be able to export smooth 12.5%-slowmo (with 30 updates per second).