Audio and Video Services
As a freelancer one can offer a number of services like vioce over, audio editing and mixing, live sound engineering, video production, video editing, video transcription. A skilled person with his professional services can earn a handsome renumration by selling these services.
Many freelance marketplaces like Upwork, Fiverr, Freelancer.com and others offer jobs for audio and vidio services like editing, mixing, transcription. If you are a skilled freelancer in audio and video processing and editting, you can grab jobs on these platforms.