Running VEGAS Movie Studio Platinum 14.0 (Build 122) on Windows 10. It won't open some mp4 video files I recently created. I've seen suggestions to remove mp4 plugins from the FileIO Plug-Ins folder and tried this by renaming each of the dlls as xxxxxx_old.dll. First in turn, then all of them. I hoped this might force Movie Studio to use qt7.dll but (if it did) the mp4 files still will not open.
mp4 won't open
philip-hunt
wrote on 7/19/2017, 12:35 AM