System and method for determining whether to use cached media

An electronic device, comprising:

• a display;
• one or more processors;
• and
• memory storing one or more programs configured to be executed by the one or more processors, the one or more programs comprising instructions for:
• while displaying a first video stream on the display:
• downloading and storing a first portion of a second video stream;
• and
• receiving a request to display the second video stream on the display;
• and
• in response to receiving the request:
• in accordance with a determination that the first portion of the second video stream meets recency criteria with respect to a current stream time of the second video stream, starting to play the second video stream using the first portion of the second video stream;
• and
• in accordance with a determination that the first portion of the second video stream does not meet the recency criteria, requesting a second portion of the second video stream that is outside of the first portion of the second video stream.

A method, comprising:

• at an electronic device with one or more processors, memory, and a display:
• while displaying a first video stream on the display:
• downloading and storing a first portion of a second video stream;
• and
• receiving a request to display the second video stream on the display;
• and
• in response to receiving the request:
• in accordance with a determination that the first portion of the second video stream meets recency criteria with respect to a current stream time of the second video stream, starting to play the second video stream using the first portion of the second video stream.