I was delighted to find the Prism software, which appeared to be straightforward and easy to use. However, when I tried to convert a short video in m2ts format to MP4, the result was a screen with green flickering all over it. I tried a couple of files, but always with the same result. I downloaded the free software from the NCH Software website, and I'm using Windows 10. The first video I tried was 131MB in its original, but I've also tried with another which was only 29.2MB - which converted into 17.3MB, I notice. Please could anyone tell me where I'm going wrong? Or could there have been a problem with the download? Thanks in advance.