Convert Video to MP3 via API

Extract the audio track from any video file and encode it as MP3. Supports all major video formats including MP4, MOV, MKV, WebM, and AVI.

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Loading FFmpeg engine... (~31 MB)

Use the API

curl -X POST https://renderio.dev/v1/commands \
  -H "X-API-KEY: ffsk_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
  "ffmpeg_command": "-i {in_video} -vn -c:a libmp3lame -q:a 2 {out_audio}",
  "input_files": {
    "in_video": "https://example.com/input.mp4"
  },
  "output_files": {
    "out_audio": "output.mp3"
  }
}'

Need an API key? Get your free API key to start processing files programmatically.

Common Variations

High quality 320kbps

-i input.mp4 -vn -c:a libmp3lame -b:a 320k output.mp3

From MKV source

-i input.mkv -vn -c:a libmp3lame -q:a 2 output.mp3

Mono for podcasts/speech

-i input.mp4 -vn -ac 1 -c:a libmp3lame -b:a 96k output.mp3

Extract specific segment

-i input.mp4 -ss 00:00:30 -t 60 -vn -c:a libmp3lame -q:a 2 output.mp3

Related Operations

Convert MP4 to MP3 via API | RenderIO Convert Video to WAV via API | RenderIO Extract Audio from Video via API | RenderIO Convert Video to AAC Audio via API | RenderIO

Need to process at scale?

Automate this with the RenderIO FFmpeg API. Process thousands of files programmatically or through no-code video automation.

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