I had an old version of MEP that would not play audio of my gopro videos and after googling found that I should upgrade to the 2021 version so I did. The new version downloaded some kind of codac? converter and now all of my videos ONLY play the AUDIO and no video. I am not technical savvy at all and do not understand many modern computer terms. I just want to be able to take a video, including my new gopro videos and insert them into my movie. I need very basic instructions on how to fix the codac issue. ( I still have the other MEP version on my computer that will play my other videos but the gopro videos have the static on them in the old MEP version.) I have tried googling this issue and don't have luck.