Best Practices – Digital Asset Guidelines – Rev 4 www.autocare.org | www.autocarevip.com | technology@autocare.org 22 VP8 • VP8 is an open video compression format created by On2 Technologies. • In 2010, Google purchased On2 and released a specification of the format under the Creative Commons Attribution 3.0 license it is now royalty free. • The WebM Project was launched, featuring contributions from Mozilla, Opera, Google and more than forty other publishers, software and hardware vendors to use VP8 as the video format for HTML5. • In the WebM container format, the VP8 video is used with Vorbis audio. • Internet Explorer 9 will support VP8 video playback if the proper codec is installed. • Android is WebM-enabled. • Flash Player will support VP8 playback in a future release. Audio Codec Audio codecs are algorithms by which audio stream is encoded. The table below includes the 3 most important audio codecs. Codec Description MP3 • MPEG-1 or MPEG-2 Audio Layer 3 (MP3), is a patented digital audio encoding format using a form of lossy data compression. • MP3 is an audio-specific format designed by the Moving Picture Experts Group (MPEG) as part of its MPEG-1 standard and later extended in MPEG-2 standard. • MP3 is a common audio format for consumer audio storage, as well as a de facto standard of digital audio compression for the transfer and playback of music on digital audio players. • MP3s can contain up to 2 channels of sound. They can be encoded at different bitrates: 64 kbps, 128 kbps, 192 kbps, and a variety of others from 32 to 320. Higher bitrates mean larger file sizes and better quality audio. • MP3 format allows for variable bitrate encoding, which means that some parts of the encoded stream are compressed more than others. • MP3s can also be encoded with a constant bitrate. • Because MP3 format is patent-encumbered, Linux cannot play MP3 files out of the box. • Most portable music players support stand-alone MP3 files. • MP3 audio streams can be embedded in any video container.