Well, I've checked the file and I'll tell you the results, but I have now idea why it is this way.
I have two computers. On one computer this problem dosn't happen at all, but on the other one I have the same problem.
This is how I tried to solve it on the not-working computer.
I converted the file to a couple of different codecs (in difference to the current "MS-WMV9" which apperently didn't work).
I first made an uncompressed AVI. The same problem occured, but it renderd fine. I then turned on "fast buffer", and then it worked perfect.
That means it has something to do with the codec, so I tried another codec - DivX. I didn't work, but I have some problems with DivX in general, so the problem might not have anything do with this.
So, as I can see, there are two alternatives. Either convert to QuickTime or to an uncompressed AVI.
But I have no idea why it is this way - and even less why it only works on one of my computers. Anybody else have an idea?
basically all you need to do is open the file
then goto video -> compression
(make sure full processing mode is selected in the video menu)
select Uncompressed RGB
press ok
then goto file -> save as avi
then your done
Two programs I know of will add alpha (transperancy to a movie)
After Effects
Blender 3.6's video editor/ w/chromakey or greenscreen etc. plugin.
All need to render in Quicktime, in Animation compressor, millions+ colors.
Millions color is 24bits, milions+ is 32bits or 24+8 for a 256 level alpha.
Moho handles Alphas in MOV with Millions+ Animation compression perfectly. They can be a layer and also have 3d layer placement. The alpha in the MOV will mask other layers in a group (think shadows etc.).
Send me a message about AE for rendering out alpha with mov.
Toddio
I haven't had time to work in Blenders editor much, the programs a opensource freebee and from my experience though it has a nasty learning curve is as good or better than some of the pro software I have used.
rule:
1.Tools work in their window, like Moho fuctions depend on the tool.
2. Keyboard shortcuts are logical, move keystroke with an x,y or z keystroke after (like GX, GZ GY) constrains motion to that direction. Scale etc. has same nature.