The videos on my journal are designed to play in most all browsers that support HTML5 Video. If the video does not play you can upgrade your browser to the latest version of Firefox or Chrome. If you can't or don't want to upgrade your browser, you can download the videos and play them in a media player. To download you'll probably need to right click on the download links and choose the 'save' option, or possibly hold shift+click depending on what web browser you're using. Once you have the .mp4, .webm, or .ogg file saved you can attempt to play it. If your computer does not have a video player capable of playing the videos you can install VLC which supports almost every video format avaialbe today, including those posted to my website.