Compressing video recording- file gets bigger! i have recorded a part of my screen (2624x1714, 8 hours, ca. 30 GB), then trim and cut in final cut pro. Now I want to compress it with Compressor. I set the output to HD 1080p but the file doesn't get smaller but bigger (36GB). Why? How should I proceed?

Thanks

L
I solved it by reducing the bitrate 
thank you