Clean workflow
Listen to the video and identify the range you need. If the recording is long, trim it first, then create the MP3 output with the Video to MP3 tool.
Quality and file size
Balanced quality is usually enough for podcasts, lectures and speech. Higher quality may make sense for music or archive use.
SEO note
This topic has strong traffic potential, but the content should focus on legitimate file use. That framing is healthier for user trust and ad suitability.