Hello all I have been trying to find out , whether the wmv9 and vc1 is exactly the same codec having different names One from Microsoft and other from SMPTE , or there is any changes that's been suggested and included in the specs of VC1 So , there are some difference between wmv9 and VC1 ? If its exactly the same , then is it possible do decode the video stream using an STB that's having VC1 decoder where the content is encoded by the WMV9 encoders , the reason for this confusion is I can find my companies whose have announced that their encodes /decoders etc products will support VC-1 in future , so does this mean that it will actually also support wmv9 ? or its different video codec [ not major difference ] but then too with some minor changes which SMPTE have Recommended and incorporated on top of the wmv9 submitted by the MS. ? Again , is the windows media player on PC can decode the VC- 1 encoded content ? theoretically ? & practically ? if yes then how about the transport stream ? Multiplexing of audio ,video .....then audio formats , no of audio channels etc things .... Would really appreciate if some one can through some light on these things , I too am trying to understand but till now not able to fully understand all these things Warm regards, Prashant Desai ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.