The Asset module proposes a new approach to the media management in Drupal, resolving a long-standing problem of reusable media files (images, videos, documents, etc) that evolved into the problem of reusable media content (images/videos/documents/etc with the attached content like description/licence/etc).
Scald is a different take on how to handle media - known as atoms - in Drupal. It is a platform designed to make it extremely easy to implement the social features which are so essential - and so unique - to the Web communities. Additionally, Scald - in tandem with the DnD module - provides a novel and natural way for users to compose complex posts.
The MediaElement module brings the MediaElement.js plugin to Drupal. MediaElement is a jQuery based JavaScript plugin that enables the video and audio tags using h.264 to work under browsers that do not support the tag or the codec and provides a consistent interface across all browsers.
This extensible module will create fields for node content types that can be used to display video, image, and audio files from various third party providers.
Media Mover is a set of modules which allows website administrators to easily create complex file conversion processes.