I don't think so. CM9 and 7 are just ROMs created from a base of GB or ICS, but they are heavily modded. To fix this video codec problem, it's gonna require the physical device, which I don't think Cyanogenmod has too many of unless they are donated, to create a flashable patch. I'm pretty sure it's hard, so a fix can't be expected very soon, but I'm sure Hashcode will try his best and fix it in time. It's just not very high priority, so he may not even be working on it yet. Cuz tbh, Netflix and YouTube isn't a necessity, but stable 3G and 4G is.