Media RSS
（重定向自MRSS）
Media RSS (MRSS) is an RSS extension that adds several enhancements to RSS enclosures, and is used for syndicating multimedia files (audio, video, image) in RSS feeds. It was originally designed by Yahoo! and the Media RSS community in 2004, but in 2009 its development has been moved to the RSS Advisory Board. One example of enhancements is specification of thumbnails for each media enclosure, and the possibility to enclose multiple versions of the same content (e.g. different file formats).