SMPlayer Portable
With SMPlayer Portable, you can use a video player that supports a variety of formats wherever you want, and you won't have to worry about file compatibility issues when switching computers.
SMPlayer, a free multimedia player, comes with all of the codecs needed to play almost any video and audio format without having to install any additional codecs: simply set up SMPlayer.
The fact that this player remembers the options of all the files it is playing is the feature that really stands out. If you start watching a movie but have to leave, it will continue where you left off with the same options when you open it again: volume, subtitles, and an audio track.
SMPlayer Portable has many interesting features, including the ability to play videos from YouTube and download subtitles directly from opensubtitles.org, in addition to playing all known video and audio formats.
Other functions that are more advanced include: audio and video filters, adjusting playback speeds, synchronizing audio and subtitles, and a video equalizer are among the other features.
SMPlayer's user interface is completely customizable, and it comes with a variety of icon themes that make it simple to change the player's appearance.