MPlayer WW is a Portable Freeware Media Player created by William Wang. Based on MPlayer, this Portable movie and audio player supports a multitude of playback formats and is very easy to use.
IrfanView is a free image editor that can be used to view, edit and convert image formats. For example, you might use it to "convert images to webp" format for use on websites.
SMPlayer is a free portable media player. It features built-in codecs that can playback all popular audio and video formats and includes support for Chromecast.