[Robert774] “Also I have no Idea what Matrox Compression is, Do you?”
This part is vague, you need to inquire. There is no such thing as a generic Matrox CoDec. There are major differences between Axio/ Extio (HD systems), RT systems and old DigiSuite stuff. Most likely they are using an RT system (the resolution given indicates standard NTSC 720×486).
On some level your initial suspicion is right – working in Flash isn’t that ideal. For video output you need fields and Flash does not give you this. You should also use motion blur to minimize flickering. From there it would also be easy to render out the final AVI in whatever Matrox CoDec you need.
Mylenium
[Pour Myl