Best Practices – Digital Asset Guidelines – Rev 4 www.autocare.org | www.autocarevip.com | technology@autocare.org 19 Containers Video container formats define how to store things within them. The table below includes some of the common video containers. Container Description MP4 • MPEG-4 Part 14 or MP4 is a container format standard specified as a part of MPEG-4. It is most commonly used to store digital video and digital audio streams, especially those defined by MPEG, but can also be used to store other data such as subtitles and still images. • .mp4 is the global file extension for the official container format defined in the MPEG-4 standard. • To create MP4 files use audio and video formats covered by the MPEG-4 Standard. • Allows streaming over the Internet. • Common video codec is H.264. (See ‘Video Codec’ section) • Common audio codec is AAC. • Works on Apple devices and plays in QuickTime. Ogg • Ogg is an open standard and unencumbered by any known patents. • Firefox 3.5, Chrome 4, and Opera 10.5 support Ogg container without requiring a plug-in. • Ogg video is called Theora. • Ogg audio is called Vorbis. • .ogv extension WebM • WebM is a container format designed to provide royalty-free, open video compression for use with HTML5 video. • .webm extension • Development is sponsored by Google. • All users are granted a worldwide, non-exclusive, no-charge, royalty-free patent license. • The WebM project is dedicated to developing a high-quality, open video format for the web that is freely available to everyone. • WebM is supported by Mozilla, Opera, Adobe, Google and more than seventy other publishers and software and hardware vendors.