LAVFilters
If, after you installed the VLC mediaplayer, the video still does not show, install the LAVFilters
https://github.com/Nevcairiel/LAVFilters/releases
Download LAVFilters 0.70.2 x64.zip for 64-bits computers
or LAVFilters installer.exe for 32-bits computers
Go to your download directory and unzip the package
To install the LAVFilters use the 3 batch files:
Right click and install as Administrator
Install_audio.bat
Install_splitter.bat
Install_video.bat
You get a message if the installation was succesfull.
Normally Subtitle Edit will now show the video in the player.