Gorgeous! I have a copy of Aladdin, but haven't really messed with it too much. What model Amiga and processor are you using?
Well....until August 2009 I was using it on an A2000/040/32MB/OS3.9 with Picasso II+ card. It was actually pretty speedy rendering single frames (I never got to animation on it). Aladdin is one of the faster renderers out there.
Then the SCSI card in my A2000 died and I switched over to using UAE on a 2.8GHz Pentium 4. I must say...Aladdin really smokes on it! It's fast. Plus under UAE I have access to higher resolution screenmodes and the 1GB of RAM in my PC - so I can make much larger and longer animations more easily. I know some people are against emulated Amigas, but I am mainly an apps person, not a gamer - and I find all the apps I used to use (ImageFX, Lightwave, PageStream, DeluxePaint, OctaMED, Bars&Pipes, etc.) run just fine - and even better because they are faster - under UAE. For instance, yesterday I just worked on a 130MB TIFF file (10,000 x 10,000 pixels) under ImageFX on my UAE emulated Amiga. I could never have done that on my real hardware Amiga.
How long did it take to render? That's not the Amiga's native output, is it or do you have a video card?
It actually is rendered in an Amiga RTG screenmode (sort of). YouTube conversion of course reduces the quality & sharpness of the video quite a bit. Aladdin4d will render to any screenmode your Amiga has installed. The original animation was rendered in 640x480 16-bit RTG (Picasso96). This looks awesome and sharp on screen (pretty much DVD quality). I can render to even higher screenmodes (like 1024x768 or higher for HD/Blu-Ray) quality. So there is no reason why you couldn't do totally "modern" hi-definition animations with the Amiga and Aladdin4d.
All "Amigas" under UAE can use the PC's graphics chips for their own RTG display. But if you have a real Amiga without a graphics card, Aladdin4d can render stills or animations to HAM6 or HAM8 (the latter of which actually look pretty darned good) or to 16-bit or 24-bit IFF frames directly to your hard drive (which you can then assemble into animations with software). There really are no limitations to rendering resolution with Aladdin4d.
The only thing I'm trying to figure out is how to create a screenmode for rendering which will result in a 16:9 aspect ratio animation.
As for how long it took - this short animation took about half an hour on the PC/UAE setup described above. Although I should say I had all the shading/smoothing and anti-aliasing algorithms set to the max, which really increased rendering time.