Built for Developers: Audio Upload API

Enjoy a powerful REST API for uploading, transcoding, and streaming audio to millions of viewers on demand.

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Example Audio URL using the Audio Upload API

Upload audio with a simple API

Bytescale's low-latency audio upload API is designed for developers that need a fast and scalable way to store, transcode, and stream audio on-demand.

  • Audio-optimized CDN.
  • Stream audio while it's transcoding.
  • Audio transcoding, optimization, and conversion.
Example of using the Audio Upload API

Prepare your audio for playback

Prepare audio files for playback on the web using simple URL commands, which you add to the querystring.

  • Supports almost any input audio format.
  • Supports extracting audio from video files.
  • Trim, join, convert, and set sample and bitrates.
Transcode Uploaded Audio via API

Stream your audio on-demand

Stream your audio to millions of listeners, at multiple bitrates, within seconds of uploading your input audio file.

  • Real-time transcoding (playback within seconds).
  • Adaptive Bitrate (ABR) over HLS.
  • Set sample rate and bitrate.
  • Stream in multiple bitrates for different devices.
Audio Processing & Optimization API

Extract duration, codec & more

Extract audio metadata as JSON, to make decisions within your app based on the uploaded audio file's characteristics.

  • Sample rate, bitrate & bitrate mode
  • Duration, channels & codec
  • Easy-to-parse JSON data structure
Extracting audio duration & codec

Authorize uploads & audio streams

Optionally authorize all uploads and audio streams via your app's existing security layer using JWTs.

  • Authorize all uploads and audio streams.
  • Generate JWTs from your API for per-user access.
  • Uses your app's existing security layer.
Authenticated URLs

Stream to a global audience

Benefit from a worldwide CDN with built-in audio support, allowing for efficient buffering, seeking, and partial playbacks.

  • Global CDN with Full Audio Support.
  • HTTP Standard Audio Streaming (AAC & MP3).
  • HTTP Live Streaming (HLS).
Audio Hosting API

Monitor traffic & storage

Beautiful dashboards to reveal bandwidth and storage usage in clear and simple terms.

  • Analyze monthly & daily usage patterns.
  • Gain insights by identifying trends.
  • Identify busy and quiet periods.
BrowserBytescale Dashboard

Everything you need to handle
audio in your application

Core Features

Audio Conversion

Convert from almost any input audio format to a web-optimized output format.

Audio Optimization

Adjust bitrates and sample rates to suit your audience and bandwidth usage requirements.

Audio Trimming

Remove seconds from the start and/or end of your audio with simple URL parameters.

Audio Streaming

Stream your audio within seconds of starting a transcode operation, with real-time audio transcoding.

Audio Concatenation

Create new audio by adding multiple source audio together, e.g. to add intros to your audio.

Adaptive Bitrate (ABR)

Stream audio in multiple bitrates and resolutions to give your audience the best experience.

Audio Metadata

Extract metadata, such as duration, to make decisions in your app based on the uploaded audio.

Simple Upload API

Upload audio with POST requests or our SDKs: our documentation is clear and simple, and includes examples with your API key.

Simple Audio API

Benefit from an easy-to-use URL API to stream your uploaded audio in web-optimized formats, such as HLS, MP4, and WebM.

Pro Features

Custom CNAME

Use a custom CNAME for your audio URLs to strengthen your company's brand.

External Storage

Integrate external storage: AWS S3, Cloudflare R2, DigitalOcean Spaces, Google Storage & HTTP.

Authorized Access

Bytescale allows you to control access to your audio via your API through JWT access tokens.


Bytescale offers a Content Ingestion Network (CIN) for audio upload traffic.

Team Support

Invite your team to manage and monitor your organization's account.

Upload API docs

Upload audio with our APIs, SDKs, and widgets. S3 buckets supported.

Read the Docs
Upload API docs

Audio API docs

Fine-tune your audio playback with simple URL query parameters:

Read the Docs
Audio Processing API Docs
Get Started

Ready to upload & host
audio for your application?

Get Started

Upload, transcode, and host your first audio in as little as 60 seconds.

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