A system that utilizes a determined time between characteristics from
content for subsequently identifying the content and/or the corresponding
content review position in the time domain. The system utilizes a database
of previously stored time between characteristics from known content for
matching to the determined time between characteristics from the content
source. The characteristics may correspond to video tape indexing data,
keyframe data, audio characteristics, text occurrences, and/or other known
characteristics from the content. When a match is found between the
determined time between characteristics and the stored times between
characteristics, the system identifies the content. If corresponding time
domain data is stored in the database, the system identifies the current
content review position in the time domain. When the time between
characteristics from the content does not match any of the times stored in
the database, the system stores the current time between characteristics
and corresponding content identifying information in the database for
identifying the content at some subsequent time.