I like Acethinker Online Screen Recorder, which could record webcam video, desktop video and upload the video to Youtube freely. It could record the video as long as you wish. Not like the other screen recorder, which just let you record one minute or with large watermark on the video. I always use it to create screencast on my macbook pro, free and works fairly well.
Actually, there are many online apps can convert MOV video to MP4 video, such as zamzar, Acethinker Video Converter, mediaconverter, etc. They are totally free, and you don’t have to download or install anything.