First, when recording in low-light conditions, the framerate drops to an unusable level. Even in the photo camera, when moving around, I can see some "ghosting". The other issue concerns the very low bitrate of the audio recording, but it seems that it's improved in the ICS ROM's using the AAC codec. At least the bitrate is higher, but I haven't tried yet if that translates to a better sound recording quality, or if the bottleneck in the video's sound quality is the quality of the microphone itself.
Has anyone experienced any of these problems and know any workaround? The framerate drop in low light happens even if the phone is overclocked.