# Audio Encoding. Built for Developers. Encode, merge, loop, extract artwork, and generate waveforms — all automated in a Simple API. [Get Started](/c/signup/) [Get Started](/c/signup/) [Documentation](/docs/robots/audio-encode.md) No credit card needed · Cancel anytime ![Audio source](/audioencoding/rockangel.webp?dpl=dpl_EgVneLSpgfLPyuLUzfbHZX9Uye4a) source.wav 48 MB · 44.1 kHz48 MB · 44.1 kHz · Stereo · 1411 kbps Encoding… ![.mp3](/audioencoding/rockangel.webp?dpl=dpl_EgVneLSpgfLPyuLUzfbHZX9Uye4a) .mp3 128 kbps · 4.2 MB ![.ogg](/audioencoding/rockangel.webp?dpl=dpl_EgVneLSpgfLPyuLUzfbHZX9Uye4a) .ogg 160 kbps · 5.8 MB ![.aac](/audioencoding/rockangel.webp?dpl=dpl_EgVneLSpgfLPyuLUzfbHZX9Uye4a) .aac 256 kbps · 8.4 MB ### Turn audio into product-ready assets * **MP3, WAV, AAC, and FLAC** outputs * **Extract audio** * **Trim, merge, and normalize** tracks * **Waveform previews** * **Consistent bitrate and sample rate** * **Speech transcription** Audio Optimization Compress audio up to 90% while preserving quality with modern codecs. Transform with Simple APIs Convert, merge, and enhance audio files with powerful Robot chains. Automate with AI Transcribe speech, generate audio, and extract metadata automatically. Robots ## Transform Your Audio At Transloadit, a Robot is an automated worker that performs a single task in your audio workflow — like extracting cover artwork, encoding audio, or concatenating audio files. [Extract Cover ArtworkExtract embedded cover artwork from audio files./audio/artwork](/docs/robots/audio-artwork.md)[Encode Audio FilesConvert audio files into all kinds of formats. Like MP3, AAC, and more./audio/encode](/docs/robots/audio-encode.md)[Concatenate Audio FilesConcatenate several audio files together into a single audio file./audio/concat](/docs/robots/audio-concat.md)[Loop Audio FilesLoop one audio file as often as is required to match a given duration./audio/loop](/docs/robots/audio-loop.md)[Merge Audio FilesOverlay several audio files on top of each other./audio/merge](/docs/robots/audio-merge.md)[Generate WaveformsGenerate waveform images for your audio files./audio/waveform](/docs/robots/audio-waveform.md) ### Our AI-powered Robots [Transcribe speech in audio filesTranscribe speech to text in audio files./speech/transcribe](/docs/robots/speech-transcribe.md)[Convert text into speechWrite text in a document, and have it spoken aloud./text/speak](/docs/robots/text-speak.md) Demo ## Build Audio Pipelines by Chaining Robots Chain Robots together to create end-to-end automated pipelines for audio processing. Uploading audio… joakim\_karud-rock\_angel.wav joakim\_karud-rock\_angel.wav 320 kbps · 3:24 Upload Encode Artwork Waveform Assembly Instructions (JSON) { "steps": { ``` ":original": { "robot": "/upload/handle" }, "encode_mp3": { "use": ":original", "robot": "/audio/encode", "preset": "mp3", "ffmpeg": { "ab": "320k", "ar": "44100" } }, "artwork": { "use": "encode_mp3", "robot": "/audio/artwork", "format": "jpg", "width": 280, "height": 280 }, "waveform": { "use": "artwork", "robot": "/audio/waveform", "width": 280, "height": 80 } ``` } } ![Audio format conversion](/audioencoding/1.webp?dpl=dpl_EgVneLSpgfLPyuLUzfbHZX9Uye4a) WAV → MP3 2:44 ![Audio compression](/audioencoding/2.webp?dpl=dpl_EgVneLSpgfLPyuLUzfbHZX9Uye4a) 45 MB → 5.2 MB 1:32 ![Audio processing speed](/audioencoding/3.webp?dpl=dpl_EgVneLSpgfLPyuLUzfbHZX9Uye4a) 850 ms → 120 ms 3:21 Made for Audio at Scale ## Audio workflows without the pain Skip the hassle of encoding, format conversion, and audio processing. Transloadit gives you fast, safe, and cost-effective audio workflows through APIs and SDKs built for production. Pro codecs Start with MP3, AAC, Opus, FLAC, or WAV presets, then override supported FFmpeg parameters for codecs, bitrates, channels, filters, and containers. Faster start Parallel ingest and edge delivery cut startup time across regions. Secure by default Signed uploads, scoped credentials, and compliance-aware storage options keep your audio pipelines safe. Zero infrastructure No servers to provision or maintain. Our cloud workers auto-scale with your traffic. Just API calls — we handle the rest. No storage problems Export encoded audio to Amazon S3, Azure Blob Storage, Backblaze B2, Box, Cloudflare R2, DigitalOcean Spaces, Dropbox, Google Cloud Storage, MEGA S4 Object Storage, MinIO, OpenStack Swift, Rackspace Cloud Files, Supabase, Tigris, and Wasabi. Simplify development Typed SDKs, deterministic Assemblies, and flexible Robots. CI-safe audio pipelines you can version-control. [Try Transloadit for free](/c/signup/) [Try Transloadit for free](/c/signup/) Related resources ## Explore this topic Move from the service overview to practical guides, working demos, Robot documentation, and proven customer outcomes. ### Guides * [Control video and audio codecs with Transloadit→](/guides/control-video-audio-codecs.md) * [A beginner’s guide to FFmpeg with Python→](/guides/ffmpeg-with-python.md) * [Media automation: from upload to reliable output→](/guides/media-automation.md) * [A complete guide to digital-asset workflows→](/guides/digital-asset-workflows.md) ### Robot docs * [🤖/audio/encode→](/docs/robots/audio-encode.md) * [🤖/audio/waveform→](/docs/robots/audio-waveform.md) * [🤖/audio/merge→](/docs/robots/audio-merge.md) * [🤖/audio/artwork→](/docs/robots/audio-artwork.md) ### Solutions * [Media & Entertainment→](/solutions/media.md) * [Software development & SaaS→](/solutions/software.md) * [E-learning & EdTech→](/solutions/edtech.md) ### Pricing and customer story * [Pricing→](/pricing.md) * [How Transloadit helps to keep the records spinning at Promo Push→](/casestudies/2016/11/promo-push.md) ### Live demos * [View demo→High-quality MP3 encoding](/demos/audio-encoding/encode-into-mp3.md) * [View demo→Generate a waveform image from an audio file](/demos/audio-encoding/generate-a-waveform-image-from-an-audio-file.md) * [View demo→Loudness Normalization](/demos/audio-encoding/normalize-volume-in-audio.md) Try Transloadit ## Try Transloadit for free Encode any format or resolution on Transloadit's global infrastructure. Large audio files slow down processing Compress audio with AAC/Opus Maintaining multiple versions for different platforms Convert to any audio format on demand Inconsistent volume across files Automatically normalize audio levels Manual metadata handling Extract & inject metadata automatically Background noise reduces audio quality Apply audio filters (denoise, equalize) quickly Silence or dead air needs trimming Automatically detect & trim silence Poor playback due to unoptimized encoding Encode audio for smooth streaming Need to protect sensitive audio Alter voices automatically GDPR GDPR HIPAA HIPAA ISO 27001ISO27001 ISO 27001 AES-256 AES-256 SOC 2 Type II SOC 2 Type II [Try Transloadit for Free](/c/signup/) [Try Transloadit for Free](/c/signup/) No credit card needed · Cancel anytime