Ps Video To Audio

Extract Audio from Video

Extract the audio track from a video file (mov, mp4, mkv, etc.) into a standalone MP3 using ffmpeg. Requires ffmpeg with libmp3lame.

Inputs

• Target file: the movie file to extract audio from. If the user didn't name one (or named one ambiguously / it doesn't exist), ask them which file, or list video files in the current directory (*.mov, *.mp4, *.mkv, *.m4v) and ask them to pick.
• Support multiple files if the user gives more than one — process each in turn.

Defaults

Unless the user specifies otherwise, default to a lowish-quality mono MP3 (small file size, fine for voice/lecture-style content):

• Mono: -ac 1
• Sample rate: -ar 22050
• Bitrate: -b:a 64k
• Codec: -codec:a libmp3lame

Only ask the user about these params if:

• The file sounds music-heavy or high-fidelity is implied (e.g. "music track", "song"), in which case suggest stereo + higher bitrate (e.g. -ac 2 -ar 44100 -b:a 192k) and confirm.
• The user's request is ambiguous about quality (e.g. just "extract the audio" with no quality hint given previously) — a quick one-line confirmation of the default is enough, don't over-ask.
• Otherwise, just proceed with the lowish-quality default silently — don't interrupt for params that already have a sensible default.

Command

ffmpeg -i "<input>" -vn -ac 1 -ar 22050 -codec:a libmp3lame -b:a 64k "<output>.mp3"

• -vn drops the video stream entirely (audio-only output).
• Output filename: same basename as input, .mp3 extension, written alongside the source file unless the user asks for a different location.
• Don't overwrite an existing output file without confirming — ffmpeg will prompt interactively otherwise, which can hang in a non-interactive shell; check first with ls or pass -y/-n deliberately based on user intent.

After running

Report the output filename, resulting duration/size, and the bitrate/mono setting used, so the user can tell at a glance what they got.