# Audio Set CBR Re-encode audio using Constant Bitrate (CBR) > Canonical page: https://elysiatools.com/en/tools/audio-set-cbr - **Category:** Media - **Keywords:** audio, cbr, bitrate, mp3, aac, ogg, opus ## Overview Audio Set CBR re-encodes an audio file with a constant bitrate. Upload a supported audio file, choose an output format and target bitrate, and optionally set the sample rate, channels, and metadata preference before downloading the converted file. ## Inputs - **Audio File** (file): Select an audio file - **Output Format** (select) - **Target Bitrate** (select) - **Sample Rate** (select) - **Audio Channels** (select) - **Keep Metadata** (checkbox) ## When to use - Create audio files with a consistent bitrate for playback or distribution requirements. - Convert supported audio files to MP3, AAC, M4A, OGG Vorbis, or Opus. - Reduce or standardize audio bitrate while choosing whether to keep the original sample rate, channels, and metadata. ## How it works - Upload one supported audio file, such as MP3, AAC, M4A, OGG, or Opus. - Select the output format and a target bitrate from 96 kbps to 320 kbps. - Choose Auto, 44.1 kHz, or 48 kHz for the sample rate, and Auto, mono, or stereo for the channels. - Enable or disable Keep Metadata, then generate the converted audio file. ## Use cases - Standardizing a collection of audio files to a consistent CBR setting. - Creating MP3 or AAC files at a selected bitrate for sharing or playback. - Converting audio to mono, stereo, 44.1 kHz, or 48 kHz when a specific output configuration is needed. ## Frequently asked questions ### What audio files can I upload? You can upload MP3, AAC, M4A, OGG, and Opus audio files, subject to the tool's file limit. ### Which output formats are available? The tool can output MP3, AAC, M4A, OGG Vorbis, or Opus. ### What does CBR mean? CBR means constant bitrate, so the audio is encoded using a consistent bitrate target. ### Which bitrate values can I choose? Available bitrates are 96, 128, 160, 192, 256, and 320 kbps. ### Can I keep the original metadata? Yes. Keep Metadata is enabled by default and can be turned off before conversion. ## Related tools - [Batch Audio Converter](https://elysiatools.com/en/tools/audio-batch-converter): Convert multiple audio files between different formats like MP3, WAV, FLAC, AAC, OGG, Opus with quality settings and batch processing - [Audio Codec Swap](https://elysiatools.com/en/tools/audio-codec-swap): Change the codec of an audio file within a chosen output format - [Audio Chord Progression Detector](https://elysiatools.com/en/tools/audio-chord-progression-detector): Estimate an audio file's chord sequence locally and download CSV, JSON, SVG, and method notes in one ZIP. - [Audio Melody Contour Extractor](https://elysiatools.com/en/tools/audio-melody-contour-extractor): Extract a dominant melody path from audio and export MIDI, note events, a pitch contour, SVG, and JSON in one ZIP. - [Audio to Multitrack MIDI (Draft)](https://elysiatools.com/en/tools/audio-to-multitrack-midi): Split a full mix into stems (drums/bass/other/vocals) and transcribe each to MIDI — a multi-track starting point for transcription - [Audio Change Bitrate](https://elysiatools.com/en/tools/audio-change-bitrate): Re-encode audio to a new bitrate while keeping the same format - [Audio Format Converter](https://elysiatools.com/en/tools/audio-converter): Convert audio files between different formats like MP3, WAV, FLAC, AAC, OGG with quality settings and volume adjustment - [Audio to Text Transcriber (AI)](https://elysiatools.com/en/tools/audio-to-text-transcriber): Transcribe speech from audio (wav/mp3/m4a/flac/ogg/webm/aac) to text, SRT, VTT or JSON using the grok-stt AI model. Up to 10 minutes. ## Samples - [Copyright-Free M4A Audio Samples](https://elysiatools.com/en/samples/m4a-samples): Apple iTunes compatible M4A audio samples with AAC encoding, optimized for quality and file size balance - [Copyright-Free FLAC Audio Samples](https://elysiatools.com/en/samples/flac-samples): Lossless FLAC audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music - [Copyright-Free WAV Audio Samples](https://elysiatools.com/en/samples/wav-samples): Uncompressed PCM WAV audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music - [Copyright-Free MP3 Audio Samples](https://elysiatools.com/en/samples/mp3-samples): Collection of royalty-free audio samples for testing and development purposes including nature sounds, meditation music, and ambient audio ## Related content - [Batch Audio Library Cleanup and Delivery](https://elysiatools.com/en/hubs/audio-library-batch-cleanup-and-delivery): Take a pile of mixed audio files to one shippable library — find and judge duplicates, convert the whole batch to a single format with deliberate encoder settings, fix the CBR or VBR bitrate policy, repair tags and filenames in bulk, and correct playback speed without touching pitch.