Not sure if Dwight will notice that you replied to a 3 year old thread.
😉
Animations in Artlantis are just different from in ArchiCAD ... but... that YouTube video is really unclear. Pages 51 through 63 of Dwight's book ("Artlantis Attitude") explain the process better - along with the how/when/why to animate and some of the things to watch out for in the unique Artlantis interface.
Be sure to review the Artlantis Help file - which has much more information than that video. You have to read it all. Not reading about path manipulation in the 2D window will leave you very frustrated.
If you understand keyframe animation from any other animation products ... then you will see that things are similar between Artlantis and ArchiCAD ... except that Artlantis gives you greater control over editing the path in the 2D window (not shown in the video you linked to).
Each camera placed on an ArchiCAD path is very similar to a keyframe - the path will interpolate from one camera to the next, following a path determined by how you adjust the path handles of the camera/etc.
In Artlantis, each time you press the record button you create a new keyframe in the timeline. But, in Artlantis, it is not just the geometry of the camera, as in ArchiCAD: it is EVERYTHING. Well, almost everything. The keyframe there can include lighting settings (on/off/intensity change), heliodon changes (time of day/sun angle - cloud motion), shader changes (change the opacity of a texture to make it appear that a surface is becoming textured, or changes color, etc) and more.
Of course, if you are used to video editing and keyframe animation, you'll find the interface of both Artlantis and ArchiCAD a bit 'peculiar'. Just have to experiment and learn it.
Certainly, the fact that in Artlantis the clouds can be moving in the sky, water can have gentle waves moving, and you place animated textures - e.g., a video onto a TV screen - to say nothing of illumination by radiosity, believable 3D trees, and more sophisticated shaders ... all these things make an Artlantis animation much more interesting.
The choice just depends on if you want a basic animation (e.g., something like SketchUp) for showing off massing or space, or if you want something more professional for a marketing presentation, etc...
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