bool MPAStream::Probe(IBitStream &bs ) { return bs.GetBits(11) == AUDIO_SYNCWORD; }
bool DTSStream::Probe(IBitStream &bs ) { return bs.GetBits(32) == DTS_SYNCWORD; }
bool VideoStream::Probe(IBitStream &bs ) { return bs.GetBits( 32) == 0x1b3; }