Coding your own video editing software

Hello /prog/ I have a question/challenge for you:

If you had to code your own professional video editing software what programming language would you use and why? How would you do it?

Also: Would it be possible to use asm language to make editing software?

Any language which
1.does not have GC pauses, mandatory GC or some OOP layer which hides raw memory.
2.has native hardware types
3.does not impose object/type/function call overhead compared to plain C
4.has inline asm, SSE is a must
5.has easy openGL/OpenCL bindings