I think that the master key word is RENDERING TIME .
Now,I am typing on my old laptop ,because my main computer (Pentium 4 -2GHz- 1.5MB RAM) is busy for at least 1O days,for the rendering of a 2500 frames PAL sequence in 720x576. With OSA 16,Raytracing and a few Ambient Occlusion…
Each frame takes between 3 and 9 minutes.The longest time is when a glass objet is in the camera field.
I’m using the Antares fast render for Intel processors.
1O days or even more for a 100 seconds animation… And I can only wait,without working on the followings steps oft he project,because I have only one computer that is able to run Blender.
The short 15 seconds sample that you can see on my Website (page -6) has taken 20 hours of rendering!
Making an animation doesn’t needs only working time,but also very long rendering time. Not every body can buy several computers…
High quality videofiles takes also a huge space on web servers,and for example, I have a 1OOMB space on the server,but my web provider doesn’t allow the uploading of files weighing more than 4MB each !
Users that have these limits can’t show long animations,even if they want!