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FFmpeg API [Merge Audios]

Integrate

Model id ffmpeg-api/merge-audios
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.com/v1/run/ffmpeg-api/merge-audios?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "audios": [
      "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3",
      "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3"
    ]
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.com/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"

Up to $0.306 per run charged by actual usage, the rest is refunded Run it on this page

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Utility Audio #ffmpeg

Concatenates 2 to 5 audio files in order into one file, with a selectable output codec and rate

Utility · Audio

Your first result goes here

Build a request below and run it with your API key. Outputs are copied to our storage, kept forever or 7 days for free.

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Controls are generated from the model schema. The code and the price update as you change them.

•required audio_urls
Drop a file, or · up to 5

Merge sequence specified by audio URLs, using stream 0 from each listed file.

Advanced output_format

Combined audio's output format, specified as codec_sample_rate_bitrate. When omitted, FFMPEG determines the format automatically.

POST /run/ffmpeg-api/merge-audios?wait=20 quote → $0.306
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.com/v1/run/ffmpeg-api/merge-audios?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "audios": [
      "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3",
      "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3"
    ]
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.com/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"

Run this request

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About FFmpeg API [Merge Audios]

Merges the audio files listed in `audio_urls` into a single track, in the order given. Between 2 and 5 URLs are accepted. `output_format` picks the codec, sample rate and bitrate, with mp3, pcm, ulaw, alaw and opus options; if omitted, the format is chosen automatically.

Parameters

Send either the canonical name or the native name, not both. Canonical names

NameType DefaultAllowed Description
audio_urlsrequired audios
Typeurl[] · audio
≤ 5 items≥ 2 items
Merge sequence specified by audio URLs, using stream 0 from each listed file.
output_formatoptional
Typeenum
mp3_22050_32mp3_44100_32mp3_44100_64mp3_44100_96mp3_44100_128mp3_44100_192pcm_8000pcm_16000pcm_22050pcm_24000pcm_44100pcm_48000ulaw_8000alaw_8000opus_48000_32opus_48000_64
+3 moreopus_48000_96opus_48000_128opus_48000_192
Combined audio's output format, specified as codec_sample_rate_bitrate. When omitted, FFMPEG determines the format automatically.
required Canonical name, also accepted

File parameters take a public https:// URL, a data: URI up to 10 MB, or the file_url of an upload. Files

Output

GET /requests/req_8k2m4q7x1z9c3v5b6n0p2r4t
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "ffmpeg-api/merge-audios",
  "status": "succeeded",
  "created_at": "2026-10-20T12:00:00Z",
  "started_at": "2026-10-20T12:00:02Z",
  "completed_at": "2026-10-20T12:00:09Z",
  "queue_position": null,
  "cost": {
    "credits": 306,
    "usd": "0.306",
    "charged": 306,
    "refunded": 0
  },
  "input": {
    "audio_urls": [
      "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3",
      "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3"
    ]
  },
  "output": {
    "audio": {
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.mp3",
      "content_type": "audio/mpeg",
      "file_name": "0-output.mp3",
      "file_size": 1843200
    }
  },
  "outputs": [
    {
      "type": "audio",
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.mp3",
      "content_type": "audio/mpeg",
      "file_size": 1843200,
      "duration": 12,
      "stored": true
    }
  ],
  "error": null,
  "metrics": {
    "inference_seconds": 6.8
  },
  "urls": {
    "self": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
Your files, your choiceEvery outputs[].url is a copy on our storage: kept forever (paid per GB-month) or 7 days for free, by your account setting or ?storage=.
Same shape on every modeltype, url, content_type, width, height and duration, for images, video and audio alike. output is the model’s own result object.
Fields of output
audio
object {url, content_type, file_name, file_size}Audio file produced by merging.

More models: Audio

For AI agents: this page as Markdown is at https://doitong.com/en-US/developers/models/ffmpeg-api/merge-audios.md. All models and guides: https://doitong.com/developers/llms.txt