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Sequencer exports jerky

I think this is a bug with the sequencer, I get jerky rendered animations when I add a "Look at track" with a Camera Rig Rail (following this documentation https://docs.unrealengine.com/latest/INT/Engine/Sequencer/HowTo/CameraRigRail/ )

on a PC, Win7, Titan Black, 32Gb RAM

Here it is without a "Look at track" but on a Camera Rig Rail

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And here it is with a "Look at track" on a Camera Rig Rail

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And here it is with a "Look at track" but not on a Camera Rig Rail

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Product Version: UE 4.12
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asked Aug 09 '16 at 02:07 AM in Bug Reports

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Hi twistedpancreas,

Thanks for reporting this. This bug has been addressed in this thread and you can track the bug here: UE-33632

-Matt W.

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answered Aug 10 '16 at 07:05 PM

avatar image twistedpancreas Aug 11 '16 at 12:35 AM

Thanks Matt, yeah I had "Force Fixed Frame Interval Playback" off for those rendered videos.

But where do I change the Time snapping interval to 0.1s like Pseudor says in that post?

It'd be good to get it sorted because I'd like to start using UE4 as my animation rendering software.

avatar image Matt.Williams Aug 12 '16 at 07:43 PM

Time Snapping Interval is the white dropdown at the top of Sequencer.

avatar image twistedpancreas Aug 12 '16 at 10:40 PM

Hmm turning them off and re-keying the Rail positions didn't change anything either :(

avatar image Matt.Williams Aug 17 '16 at 07:59 PM

I can't confirm whether that actually works. That was just one person chiming in on the thread. Can you download 4.13 Preview and confirm if this still occurs?

avatar image twistedpancreas Aug 19 '16 at 05:14 AM

Ok 4.13 seems to work, although now when I key frame a beginning and a end "Current Position on Rail" and scrub on the timeline I get no preview of either the camera moving on the Rail or the Camera viewport moving on the Rail :( But when I render the animation it renderers it correctly (ie not jerky). So once issue seems to be fixed but has been replaced with another.

avatar image Matt.Williams Aug 19 '16 at 03:46 PM

I'm investigating something similar here: https://answers.unrealengine.com/questions/468725/bug-camera-crane-breaks-camera.html

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