Abstract: A method of transcription a media file is provided. The method includes: receiving, from a first transcription engine, one or more transcribed portions of a media file; identifying a first transcribed portion from the one or more transcribed portions that needs to be reexamined based at least on metadata of the media file; selecting a second transcription engine to transcribe a first segment of the media file corresponding to the first transcribed portion; receiving, from the second transcription engine, a second transcribed portion of the first segment; determining confidences of accuracy of the first and second transcribed portions of the first segment based at least on metadata of the first and second transcribed portions, respectively; and selecting the first or second transcribed portion as transcript for the first segment of the media file based at least on confidences of accuracy of the first and second transcribed portions.