I recorded some video with a Sony Xperia phone. All of the files were recorded in MP4 format. I was able to watch all of them on the phone after they were recorded without any problem. I exported the files to my Windows 10 PC. Some of the files work great in Adobe Premiere Elements (I can see the video and hear sound). Others do not work at all. I am getting an error that the file is not supported or that there is an issue with the codec. When I try to open the file with the Windows Media Player, I only get a black screen with no sound. I have tried the Handbrake program, and it cannot open the files, either. I have tried changing the extension to mkv, mpg, mov and wav. None of these work allow me to open the files in Premiere. I have also downloaded the newest Quicktime. Unfortunately, this will not let me open the files. Help will be greatly appreciated with this.
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