It says to install the codec but not sure which one to install when you run a search on google too many come up which one would be the one to use for this product? I can get the file to play no problem outside of adobe premier elements 14 just can't edit.... HELP lol
You can not edit MKV videos in Premiere Elements.
One option that may work (or may not -- but it's worth a try) is to use Handbrake to convert the file to MP4.
Just a friendly warning:
don't install any codec (packs) they are known to mess up your computer.
Only install what you really need e.g. mjpeg.