My Computer is making some video files as WEBM CODEC files

[yelpisstupid1000]

One day some of my video files changed to WEBM File. Not all of them. Some of them.....so i have 4 questions

First.........Why would some change randomly?

Second......Why would some change but others NOT change then?

Third..........I have back up files of videos on a flash drive. So i thought ok ill just bring my back up video files and put hem on the computer. But even THOSE files get taken on the computer as WEBM files......and again...its not all of them...only some....why is the computer taking them in as WEBM files when there not WEBM files?

Fourth..................How do i make them go back to the way they were, without manually doing it one at a time waters?

 

[Colif]

Curious what the default player is for webm, the default file type has no default. on my PC. (look in settinghs/apps/default apps - choose default apps by file type.

I can't see anything in Win 10 that would create that problem but maybe its the app you are using to play them? Is it a browser? maybe it has an add on converting them?

https://www.lifewire.com/webm-file-4143323

 

[TerryLaze]

Curious what the default player is for webm, the default file type has no default. on my PC. (look in settinghs/apps/default apps - choose default apps by file type.

I can't see anything in Win 10 that would create that problem but maybe its the app you are using to play them? Is it a browser? maybe it has an add on converting them?

https://www.lifewire.com/webm-file-4143323

Yup most probably he installed some codec pack or new player that does this.