Clean, even sound. Out of any video.

Pull the sound out of a video, bring it to a standard loudness, add music under a voice or turn it into an audiogram.

Who uses it: Podcast and course platforms, meeting recorders, social tools and transcription pipelines.

Extract and convert audio

Takes the sound out of a video, or converts audio to MP3, AAC, Opus, FLAC or WAV.

What it is for: Podcast feeds from video episodes, audio for transcription, smaller files for listening.
Endpoint and fields: POST /v1/audio audio
In ffmpeg: -vn-c:a libmp3lame

curl "$VIDEXO_API_URL/v1/audio" \
  -H "Authorization: Bearer $VIDEXO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "input": "https://example.com/talk.mp4",
  "filename": "talk.mp3",
  "audio": {
    "bitrate": "192k"
  }
}'

import { Videxo } from '@videxo/sdk';

const videxo = new Videxo({ apiKey: process.env.VIDEXO_API_KEY, baseUrl: process.env.VIDEXO_API_URL });

const job = await videxo.audio({
  "input": "https://example.com/talk.mp4",
  "filename": "talk.mp3",
  "audio": {
    "bitrate": "192k"
  }
});
const done = await videxo.jobs.wait(job.id);

Install with npm i @videxo/sdk, or send the same request with curl or JavaScript. About the SDK

const response = await fetch(`${process.env.VIDEXO_API_URL}/v1/audio`, {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${process.env.VIDEXO_API_KEY}`,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "input": "https://example.com/talk.mp4",
    "filename": "talk.mp3",
    "audio": {
      "bitrate": "192k"
    }
  }),
});
const job = await response.json();

ffmpeg \
  -i https://example.com/talk.mp4 \
  -vn \
  -map 0:a:0 \
  -c:a libmp3lame -b:a 192k \
  talk.mp3

Output. talk.mp3: the soundtrack as a 192 kbit/s MP3.

Loudness normalisation

Brings the sound to a target loudness in LUFS with the EBU R128 filter, keeping the picture as it is.

What it is for: Every video in a feed or episode in a podcast plays at the same volume.
Endpoint and fields: POST /v1/transcode videoaudio
In ffmpeg: loudnorm-c:v copy

curl "$VIDEXO_API_URL/v1/transcode" \
  -H "Authorization: Bearer $VIDEXO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "input": "https://example.com/talk.mp4",
  "filename": "talk-normal.mp4",
  "video": {
    "codec": "copy"
  },
  "audio": {
    "normalize": true,
    "bitrate": "192k"
  }
}'

import { Videxo } from '@videxo/sdk';

const videxo = new Videxo({ apiKey: process.env.VIDEXO_API_KEY, baseUrl: process.env.VIDEXO_API_URL });

const job = await videxo.transcode({
  "input": "https://example.com/talk.mp4",
  "filename": "talk-normal.mp4",
  "video": {
    "codec": "copy"
  },
  "audio": {
    "normalize": true,
    "bitrate": "192k"
  }
});
const done = await videxo.jobs.wait(job.id);

Install with npm i @videxo/sdk, or send the same request with curl or JavaScript. About the SDK

const response = await fetch(`${process.env.VIDEXO_API_URL}/v1/transcode`, {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${process.env.VIDEXO_API_KEY}`,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "input": "https://example.com/talk.mp4",
    "filename": "talk-normal.mp4",
    "video": {
      "codec": "copy"
    },
    "audio": {
      "normalize": true,
      "bitrate": "192k"
    }
  }),
});
const job = await response.json();

ffmpeg \
  -i https://example.com/talk.mp4 \
  -map 0:v:0 \
  -c:v copy \
  -map "0:a:0?" \
  -af loudnorm=I=-16:LRA=11:TP=-1.5 \
  -c:a aac -b:a 192k -movflags +faststart \
  talk-normal.mp4

Output. talk-normal.mp4: the same picture, the sound at -16 LUFS with peaks under -1.5 dBTP.

Background music

Mixes a music track under the original sound at the level you set.

What it is for: Branded clips, product demos and promos that need a music bed.
Endpoint and fields: POST /v1/transcode extra_inputsvideoaudio
In ffmpeg: volumeamix

curl "$VIDEXO_API_URL/v1/transcode" \
  -H "Authorization: Bearer $VIDEXO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "input": "https://example.com/talk.mp4",
  "filename": "talk-music.mp4",
  "extra_inputs": {
    "music": "https://example.com/music.mp3"
  },
  "video": {
    "codec": "copy"
  },
  "audio": {
    "mix": [
      {
        "input": "music",
        "volume": 0.2
      }
    ]
  }
}'

import { Videxo } from '@videxo/sdk';

const videxo = new Videxo({ apiKey: process.env.VIDEXO_API_KEY, baseUrl: process.env.VIDEXO_API_URL });

const job = await videxo.transcode({
  "input": "https://example.com/talk.mp4",
  "filename": "talk-music.mp4",
  "extra_inputs": {
    "music": "https://example.com/music.mp3"
  },
  "video": {
    "codec": "copy"
  },
  "audio": {
    "mix": [
      {
        "input": "music",
        "volume": 0.2
      }
    ]
  }
});
const done = await videxo.jobs.wait(job.id);

Install with npm i @videxo/sdk, or send the same request with curl or JavaScript. About the SDK

const response = await fetch(`${process.env.VIDEXO_API_URL}/v1/transcode`, {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${process.env.VIDEXO_API_KEY}`,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "input": "https://example.com/talk.mp4",
    "filename": "talk-music.mp4",
    "extra_inputs": {
      "music": "https://example.com/music.mp3"
    },
    "video": {
      "codec": "copy"
    },
    "audio": {
      "mix": [
        {
          "input": "music",
          "volume": 0.2
        }
      ]
    }
  }),
});
const job = await response.json();

ffmpeg \
  -i https://example.com/talk.mp4 \
  -i https://example.com/music.mp3 \
  -filter_complex "[1:a]volume=0.2[o0m0];[0:a:0][o0m0]amix=inputs=2:duration=first:normalize=0[o0a]" \
  -map 0:v:0 \
  -c:v copy \
  -map "[o0a]" \
  -c:a aac -b:a 128k -movflags +faststart \
  talk-music.mp4

Output. talk-music.mp4: the same picture, the music at a fifth of its volume under the voice, ending with the video.

Waveform and spectrum video

Draws the sound as a moving waveform or spectrum, and keeps the sound with it.

What it is for: Audiograms for sharing podcasts and voice notes where only video plays.
Endpoint and fields: POST /v1/transcode visualize
In ffmpeg: showwavesshowspectrum

curl "$VIDEXO_API_URL/v1/transcode" \
  -H "Authorization: Bearer $VIDEXO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "input": "https://example.com/episode.mp3",
  "filename": "audiogram.mp4",
  "visualize": {
    "style": "waveform",
    "width": 1280,
    "height": 720
  }
}'

import { Videxo } from '@videxo/sdk';

const videxo = new Videxo({ apiKey: process.env.VIDEXO_API_KEY, baseUrl: process.env.VIDEXO_API_URL });

const job = await videxo.transcode({
  "input": "https://example.com/episode.mp3",
  "filename": "audiogram.mp4",
  "visualize": {
    "style": "waveform",
    "width": 1280,
    "height": 720
  }
});
const done = await videxo.jobs.wait(job.id);

Install with npm i @videxo/sdk, or send the same request with curl or JavaScript. About the SDK

const response = await fetch(`${process.env.VIDEXO_API_URL}/v1/transcode`, {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${process.env.VIDEXO_API_KEY}`,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "input": "https://example.com/episode.mp3",
    "filename": "audiogram.mp4",
    "visualize": {
      "style": "waveform",
      "width": 1280,
      "height": 720
    }
  }),
});
const job = await response.json();

ffmpeg \
  -i https://example.com/episode.mp3 \
  -filter_complex "[0:a]showwaves=s=1280x720:mode=cline:rate=25[o0v]" \
  -map "[o0v]" \
  -c:v libx264 -preset veryfast -crf 23 -pix_fmt yuv420p \
  -map 0:a:0 \
  -c:a aac -b:a 128k -shortest -movflags +faststart \
  audiogram.mp4

Output. audiogram.mp4: a 1280 by 720 video of the waveform at 25 frames a second, with the episode as its sound.

Limits. Set by your plan.

Audio formats: MP3, AAC (.aac, .m4a), Opus, Ogg Vorbis, FLAC and WAV.
Inputs are public http or https URLs, or completed private uploads up to 100 MB and your plan’s input limit. Outputs have signed download links. A job names up to 16 input and 16 output files.

Limits per plan

What one job may use on each plan
Limit	Pay as you go	Starter	Pro	Scale
Longest job	10 min	10 min	30 min	60 min
Inputs per job	1 GB	1 GB	5 GB	10 GB
Outputs per job	1 GB	1 GB	5 GB	8 GB
Outputs expire after	7 days	7 days	30 days	30 days

Pay as you go

Longest job

10 min
Inputs per job

1 GB
Outputs per job

1 GB
Outputs expire after

7 days
Starter

Longest job

10 min
Inputs per job

1 GB
Outputs per job

1 GB
Outputs expire after

7 days
Pro

Longest job

30 min
Inputs per job

5 GB
Outputs per job

5 GB
Outputs expire after

30 days
Scale

Longest job

60 min
Inputs per job

10 GB
Outputs per job

8 GB
Outputs expire after

30 days

Soon. Planned, not available yet.

Silence removal Soon

Find the quiet parts of a recording and cut them out.
Automatic captions and transcripts Soon

Speech to text as SRT, VTT and JSON with word times.

More features

Transcode and compress Compress video, convert between H.264, H.265, VP9 and AV1, resize and set the frame rate.
Social formats Crop to 9:16 and 1:1, letterbox into a new frame, rotate and flip.
Clips and trims Trim clips by time, join files, change the speed, fade in and out, and find the scenes of a video.
Watermarks and overlays Overlay logos, watermarks, titles and captions, and place one video over another as picture in picture.
Colour and effects Correct colour with eq and hue, blur a region for privacy, sharpen after scaling.
Thumbnails and GIFs Pick thumbnails, lay out storyboards and contact sheets, and make GIF previews with a fitted palette.

Run your first job. Free, no card.

Get an API key All features

Clean, even sound. Out of any video.

Extract and convert audio

Loudness normalisation

Background music

Waveform and spectrum video

Limits. Set by your plan.

Pay as you go

Starter

Pro

Scale

Soon. Planned, not available yet.

Run your first job. Free, no card.