Here is a way to extract audio from a .ts file (transport stream) as an .mp3. We’re going to outline how to do this using the programs, MPEG Streamclip and VLC Media Player. Using these we’ll show you how to extract an audio file from a .ts video container file and how to encode the file to be just audio, stripping out the video.
First off we’re writing about using VLC Media Player to export an .mp3 file, since that was specifically what most search enquiries were curious about accomplishing. So, you’ll want to open the .ts file in VLC Media Player. Go to the File drop down menu and select the Streaming/Transcoding Wizard. In the Streaming/Transcoding Wizard, select to Transcode/Save the file. Click Next. On the Choose Input page, choose your input stream. Since you just opened the video in VLC, you can choose it from the existing playlist items (instead of browsing your computer to find the file). Click next.