I have recently downloaded some videos (.mp4) from a membership training site to my personal computer. I believe they are hosted on Vimeo. A few of the videos have sound but most of them don't. All of the videos work properly but some of them don't have sound. I have tried them in several different video players with the same result. I have installed the latest codec and verified that my hardware is working properly. Do you have any suggestions on how to get the audio to work with the videos? Thanks.
Customer support service by UserEcho