Normalize Video Audio (Free, Online, No Upload)

Normalize the audio in any video right in your browser. Nothing gets uploaded to a server. Audio normalization evens out volume levels so quiet parts are audible and loud parts don't clip, giving your video consistent sound throughout. The processing runs locally on your device.

Try it in your browser

Loading FFmpeg engine... (~31 MB)

Use the API

curl -X POST https://renderio.dev/api/v1/run-ffmpeg-command \
  -H "X-API-KEY: ffsk_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
  "ffmpeg_command": "-i {in_video} -af \"loudnorm=I=-16:TP=-1.5:LRA=11\" -c:v copy {out_video}",
  "input_files": {
    "in_video": "https://example.com/input.mp4"
  },
  "output_files": {
    "out_video": "output.mp4"
  }
}'

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

Common Variations

YouTube standard (-14 LUFS)

-i input.mp4 -af "loudnorm=I=-14:TP=-1:LRA=11" -c:v copy output.mp4

Podcast standard (-16 LUFS)

-i input.mp4 -af "loudnorm=I=-16:TP=-1.5:LRA=11" -c:v copy output.mp4

Simple volume boost

-i input.mp4 -af "volume=1.5" -c:v copy output.mp4

Dynamic range compression

-i input.mp4 -af "acompressor=threshold=-20dB:ratio=4:attack=5:release=50" -c:v copy output.mp4

Related Operations

Compress Video Online Free, No Upload Required | RenderIO Extract Audio from Video Online Free - No Upload | RenderIO Free Stereo to Mono Audio Converter Online | RenderIO Denoise Video Online Free, No Upload | RenderIO

Need to process at scale?

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

Get your API key