Video Direct StoreVideo cameras & related equipment

Everytime I click make movie it renders the video and it only gives me audio not the video. Its a plain black screen but you can hear the audio. So I cleared the timeline and left a title and clicked make movie and it showed the title. I use a flip video camera and the video files wont show up when i render them. You can hear the audio and its a blank screen. Please someone help me with this.