The meteor was primarily made from stock footage that can be downloaded, however. As you wtch the clip in question, you will see that there are two pieces of stock footage composited together to make up the main metoer effect. These were both created by Sollthar and can be bought here
. Also, some of Sollthar's stock footage is available in the AlamDV downloads section of this site, for free to owners of FXhome software, and might be useable for a similar effect.
The rest of the effect was primarily various particle generators, for the smoke and roiling clouds and whatnot.