I sent bob an e-mail reply, but I have reproduced here for all to see. and comment on. I edited bobs post above to include the MP4 animation bob had done.
Bob. The drawing, render and animation, all look great.
Hope you don’t mind, I cut your video down to three revolutions and reduced its size a bit, and removed the audio track (which didn’t play any sound for me) to get it to a size suitable for the forum. I posted it in your existing forum thread.
For posting animation, unless they are just small gif animations, I tend to use YouTube. Its free to set up a channel, and post ones own video’s. Then I just post a link to the video on the forum. It probably failed to post due the file size exceeding the limits.
I’ve posted the animation in your thread on the forum, so others can comment. But reproduced my reply below.
As for stepping through an animation, it depends on how they are created.
If it is just keyframes, I’ve not known this to fail as long as the highlighted cell is on the correct actor. However If checking multiple actors, click to highlight an actors keyframe, hold down the shift key, and select another actor, vertically above or below it, on the same vertical frame. This will select multiple actors, both the two clicked and any in between. One can then switch the play mode and use Step forward. For all the actors, click the frame heading (above the actor timelines), will select a whole column.
If Commands are used, that more tricky. One cannot step through commands, The two ways I know of the ‘Step through’ commands are. Pause the animation after every frame, (using a single line custom script to display a message). Or. On simple commands (move / rotate), playing a single frame, Then playing again without undoing, resetting or altering anything
Command stepping is a bit of a pain. Maybe someone else knows a simpler way.