Swivel cannot export SWFs using Adobe Animate CC 2020's built-in VCAM
When provided with a SWF exported by Adobe Animate CC 2020 with the ActionScript 3.0 platform type and Flash Player 32, Swivel will fail to convert it to an MP4 file if Animate's built-in camera is used in it. Swivel provides the following log when this happens:
Whoa! Something bad happened, and the program blew up. Sorry about that!
Please copy and paste this junk and send it to [email protected] along with the SWF you were converting:
Invalid SWF
Method(format.swf.Reader,readPlaceObject)
Method(format.swf.Reader,readTagData)
Method(com.newgrounds.swivel.swf.SwivelSwfReader,readTagData)
Method(format.swf.Reader,readTag)
Method(format.swf.Reader,readTagList)
Method(com.newgrounds.swivel.swf.SwivelSwf,parseSwf)
Method(com.newgrounds.swivel.SwivelController,runTask)
Method(com.newgrounds.swivel.SwivelController,runTaskDelay)
Link to a SWF that causes this problem
This also isn't a new issue. I first encountered it as far back as months before Flash's official end-of-life this year. The only way I can really mitigate this problem is by animating in a MovieClip and tweening that to use it as the pseudo-camera in the root timeline.
Forgive me if this has been reported already though -- this issue is all I could find that was remotely similar. However it's 3 years old now and it describes a slightly different problem.