1. A method comprising: at an electronic device comprising a processor and memory: receiving an input to close a media item residing on the electronic device; in response to receiving the input to close the media item: identifying a current user position within the media item; storing the current user position; receiving an input to access the media item; determining an elapsed period of time between receiving the input to close the media item and receiving the input to access the media item; generating a content summary for a portion of the media item associated with the current user position based on the determined elapsed period of time by: retrieving a pre-generated summarization of the media item; and identifying a portion of the pre-generated summarization that corresponds to the current user position; and presenting the identified portion of the pre-generated summarization to a user of the electronic device.
1. A method comprising: at an electronic device comprising a processor and memory: receiving an input to close a media item residing on the electronic device; in response to receiving the input to close the media item: identifying a current user position within the media item; storing the current user position; receiving an input to access the media item; determining an elapsed period of time between receiving the input to close the media item and receiving the input to access the media item; generating a content summary for a portion of the media item associated with the current user position based on the determined elapsed period of time by: retrieving a pre-generated summarization of the media item; and identifying a portion of the pre-generated summarization that corresponds to the current user position; and presenting the identified portion of the pre-generated summarization to a user of the electronic device. 21. The method of claim 1 , wherein generating the content summary comprises generating first and second content summaries for the identified position within the media item, wherein the first content summary includes a greater amount of description than the second content summary, wherein the method further comprises receiving input for selecting the first content summary or the second content summary for presentation, and wherein presenting the generated content summary comprises presenting to the user the selected first or second content summary.