I am looking into WME SDK documentation and sample, for screen capturing and sending it to remote system. I am having following doubts,

1. My application will be use for cross platform users e.g. WindowsPC --> MAC IPAD but I am not sure whether decoder is available to decode data encoded by WME, for MAC.Please suggest.
2. Given sample is using MSS2 Codec, which all other type of codecs are available in WME and which one is best among them? I already googled but did not find something worth.
3. When I am running the sample program it is taking 80 to 90% of cpu even though encoding flag has set 95. can you suggest if some other flags also I need to set?

Thanks in advance for your responses.