Precise Transcription From Noisy Video

I have between thirty and sixty minutes of casual, informal conversation captured on video. The recording matters to me, yet the sound is muddy and words often drop into the background. I need the entire... (Budget: $30 - $250 AUD, Jobs: Audio Editing, Audio Engineering, Audio Processing, English (US) Translator, English Grammar, English Spelling, Proofreading, Transcription)