Convert MP4 to FLAC Audio via API

Extract audio from MP4 video and encode it as lossless FLAC. Ideal for music videos, concert recordings, and any content where audio fidelity is paramount.

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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 flac {out_audio}",
  "input_files": {
    "in_video": "https://example.com/input.mp4"
  },
  "output_files": {
    "out_audio": "output.flac"
  }
}'

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

Common Variations

Maximum compression level

-i input.mp4 -vn -c:a flac -compression_level 12 output.flac

24-bit output

-i input.mp4 -vn -c:a flac -sample_fmt s32 output.flac

Specific sample rate

-i input.mp4 -vn -c:a flac -ar 48000 output.flac

Related Operations

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