16. A computing device, comprising: a bus system; a memory connected to the bus system, wherein the memory includes a set of instructions; and a processing unit connected to the bus system, wherein the processing unit is configured to execute the set of instructions to: receive a set of characters inputted by a user of a computing device; play a media file; transcribe the media file to form a transcription; identify a sub-segment in which the set of characters occurs, wherein the sub-segment is marked by a beginning time point and an ending time point within a segment; and store the beginning time point and the ending time point in the memory.
18. The computing device of claim 16 , wherein the processing unit is further configured to execute the set of instructions to initiate a notification prompt on a graphical user interface of the computing device in response to identifying the set of characters in the transcription, and to display the beginning time point and the ending time point on the notification prompt.