Sound

Audio limiter for music and video

Stop peaks from clipping. Add gain to make a track louder with no distortion, or leave gain at 0 as a safety net on the final mix.

Shown on Sweet Sun, by Loyalty Freak Music

Before · the same request without it
After · Make music louder without letting the peaks clip.

The entry

Add it to a clip's effects list. Entries run in the order you write them.

{
  "type": "limiter",
  "gain": 9
}

Settings

NameAcceptsDefaultWhat it does
gain-20 to 20 dB0Gain going in, in decibels. 6 to 9 makes music clearly louder.
ceiling-20 to 0 dB-1The level nothing is allowed over, in decibels.

Run it

The whole request behind the render above. Paste it as it is, or swap the file for your own.

job.ts
import { createClient, outputUrl } from "@rendobar/sdk";


const rb = createClient({ apiKey: process.env.RENDOBAR_API_KEY });


const job = await rb.jobs.run({
  type: "compose",
  params: {
    schemaVersion: 1,
    output: {
      format: "mp3"
    },
    timeline: {
      tracks: [
        {
          clips: [
            {
              asset: {
                type: "audio",
                src: "https://cdn.rendobar.com/compose/showcase/media/music.wav"
              },
              start: 0,
              effects: [
                {
                  type: "limiter",
                  gain: 9
                }
              ]
            }
          ]
        }
      ]
    }
  },
});


console.log(outputUrl(job));

Install with npm i @rendobar/sdk. jobs.run() submits and waits, so it returns the finished job in one call.

terminal
curl https://api.rendobar.com/jobs \
  -H "Authorization: Bearer $RENDOBAR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"type":"compose","params":{"schemaVersion":1,"output":{"format":"mp3"},"timeline":{"tracks":[{"clips":[{"asset":{"type":"audio","src":"https://cdn.rendobar.com/compose/showcase/media/music.wav"},"start":0,"effects":[{"type":"limiter","gain":9}]}]}]}}}'

Returns immediately with a job id. Poll GET /jobs/{id} or register a webhook rather than blocking on the request.

Questions

What does the limiter effect do in compose?

Stop peaks from clipping. Add gain to make a track louder with no distortion, or leave gain at 0 as a safety net on the final mix. Make music louder without letting the peaks clip.

How do I add limiter to a video with an API?

Send a compose job to the Rendobar API with this entry in the timeline: {"type":"limiter","gain":9}. Add it to a clip's effects list. Entries run in the order you write them. The request on this page is complete and renders as shown.

What are the default settings for limiter?

Every setting has a default, so the type on its own is enough: gain 0 and ceiling -1. Set only the ones you want to change.

Footage and sound

More in the reference

EQ More low end and more sparkle on a music bed. Compressor Even out a voice so quiet words and loud words sit at one level. Noise gate Close the microphone when nobody is speaking, so the river drops away before and after the voice. High pass Cut the rumble under a voice. Wind, traffic and water live there. Low pass Music from the next room. Loudness Bring a voice recorded far too quietly up to a streaming loudness.

See all 77 in the effects reference →