Embedding An FLV Into The Timeline

I'm interested in embedding a video into my swf file automatically. Therefore, I managed embedding an flv file onto the stage, but the problem is that after I give the embedded video an instance name and refer to the instance in a command (f.e change x,y coordinates or change width/height), on execution of the swf, the video stays frozen while the audio plays. If I don't refer to the embedded video instance, the video plays normally, just not placed correctly on the stage.