The parts I used physics constraint can not be exported rightly , animation seems fine in Spine but gif exported is not right ,also at the export interface the first frame and the last frame where I used physics constraint are different although I copied first frame to last frame .Anyone knows how to deal with this problem? thanks! below are first and last frame

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Hello, physics at the moment cannot loop seamlessly.
A quick solution to still export nice gifs:

  • Copy your animation frames.
  • Paste them maybe 3 times on the timeline, one after the other (this depends on the strenght of certain parameters in your physics, such as damping, so 2 may be enough).
  • On export match the frame rate with your project so range works the same.
  • Check range and set the range so only the last loop is exported (eg if your animation is long 10 frames, paste it so it lasts till 30, set the range to go from 21 to 30).

Hope it helps!

    Erika
    It succeed！ Thank you！ but range I set is 80-120 not 81-120， it works ferfectly！