Platform: S50 5th

How is it possible to record video with 30 fps and with 640x480 resolution?

If I want to change fps (from 15 fps) or resolution (from 176x144) a got a message: Feature not supported.

I tried with CVideoRecorderUtility::SetVideoFrameRateL(...), ::SetVideoFrameSizeL(...) and
CCaeEngine::PrepareVideoRecordingL(...)
The result is the same.
I can make video with 15 fps and 176x144.

Thanks,
Roland