media fragment

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media fragment is a way of linking to a part of a longer media file. There is a W3C spec for this at


Why link to

You should use a media fragment to link to a specific time index (or segment) of a media file if that’s the part you consider relevant, important, or want to make a comment about, like, repost, tag, bookmark, etc.

Similarly, if you are referencing an audio or video post, you should use a media fragment to link to a specific time index or segment.

Why handle media fragments

You should support handling media fragments on permalinks to your media (e.g. audio, video) posts so that links to them from others (see above) will playback for the listener/viewer what was intended by the author of the link.

How to


How to handle media fragments

You can handle media fragments on your HTML page audio/video post permalinks, so others can use media fragments on your post URLs, by following the instructions here.

More details about how this works here:

Jon Udell has done some experimentation for to create HTML5 Audio, HTML5 Video, and Youtube Clippers for making media fragments easier. Links to his tool and details on the process can be found at Open web annotation of audio and video. His online service can be found at AV clippers with the source on GitHub.

IndieWeb Examples

(stub to be expanded with subsections for each)

IndieWeb examples of sites and post permalinks that support media fragments:


There is some support in browsers (Firefox, Webkit, Chrome) for temporal media fragments (start,end) on direct media file URLs.

Additionally, Aaron Parecki and Marty McGuire have a bit of Javascript on their websites which copies the media fragment from the HTML page to the inline media player, so you can use media fragments on their post URLs. See "How to" above for more details.


Spatial for area tags

Is there some way to use spatial media fragments (image fragments?) to figure out another iteration of area-tags?

See Also