Forgot the question mark at the end ugh... I made a short sniper animation test with a rig that uses CAT animation. When I render it and open the movie there is only a picture displayed in the movie for about a second then it's done. In other words, no animation was rendered. How do I fix this?
Hard to say, not enough information here. Check your render settings, make sure it's set to render a sequence. Sometimes the video file format can cause problems too.