"I have a Galaxy S2 and have difficulty editing the file on my phone, So I want to edit the files on my Windows PC. I have tried VirtualDub& some other source programs, but all of them seem to reduce the video quality. Any suggestion?" I read such kind of problem in the Android forum. I think there are still a lot of galaxy s2 owners encounter such a problem. In the article, I would like to share my experience of handling it.