Complex sentence: Nightwork was the first filmcrew in the competition to upload the video (two weeks before the deadline) and started a successful marketing campaign which brought them with 1182 voters the victory of the first part of the first Dutch user-generated movie.
Split into simpler sentences: Nightwork was the first film crew in the competition to upload the video (two weeks before the deadline) and started a successful marketing campaign which brought them their victory with 1182 voters. They won the first part of the first Dutch user-generated movie.