Do you get an error message that says your 
computer won’t play your video file? Is it asking for a codec to play your video and you have no idea what a codec is?!
We typically give our PC using clients mp2 or avi video files and we give our MAC clients mov or mg4 files. We have found that a change was made on Widows 10 computers that has them now preferring mg4 files. So the problem you have is that whatever file you got whether you are a PC or a MAC just isn’t playing. Here is the solution:
You can download the VLC video app. It is simple, fast and powerful.
- Plays everything – Files, Discs, Webcams, Devices and Streams.
- Plays most codecs with no codec packs needed – MPEG-2, MPEG-4, H.264, MKV, WebM, WMV, MP3 and more.
- Runs on all platforms – Windows, Linux, Mac OS X, Unix, iOS, Android and more.
- Completely Free – no spyware, no ads and no user tracking
If you are trying to use Windows Media Player but get one of the following error messages:
Windows Media Player cannot play the file because the required video codec is not installed on your computer.- Windows Media Player cannot play, burn, rip, or sync the file because a required audio codec is not installed on your computer.
- A codec is required to play this file. To determine if this codec is available to download from the Web, click Web Help.
- Invalid File Format.
To resolve this problem, configure Windows Media Player to download codecs automatically. To do this, follow these steps in Windows Media Player 11:
- On the Tools menu, click Options.
- Click the Player tab, click to select the Download codecs automatically check box, and then click OK.
- Try to play the file. If you are prompted to install the codec, click Install.
We hope that helped you out. Now you can bring in/ or send in all of your old analog media to Leave A Legacy and we’ll transfer it all to digital files for you. And now all your video files should play on your computer of choice.