# Audio Set VBR Convert audio using Variable Bitrate (VBR) for efficient quality > Canonical page: https://elysiatools.com/en/tools/audio-set-vbr - **Category:** Media - **Keywords:** audio, vbr, bitrate, mp3, ogg, opus ## Overview This tool converts audio files to Variable Bitrate (VBR) formats like MP3, OGG, and OPUS, optimizing file size while maintaining quality through adjustable bitrate settings. ## Inputs - **Audio File** (file): Select MP3/OGG/OPUS file - **Output Format** (select) - **VBR Quality (0 best - 9 smallest)** (select) - **Sample Rate** (select) - **Audio Channels** (select) - **Keep Metadata** (checkbox) ## When to use - When you need to reduce audio file size for storage or streaming without significant quality loss. - When converting audio to specific formats like OGG or OPUS for compatibility with certain devices or applications. - When preparing audio for web or mobile use where bandwidth and storage efficiency are important. ## How it works - Upload an audio file in MP3, OGG, or OPUS format. - Select the output format and set the VBR quality level from 0 (highest quality) to 9 (smallest size). - Optionally adjust sample rate, audio channels, and choose to preserve metadata. - Download the converted audio file with the applied VBR settings. ## Use cases - Compressing podcast episodes for efficient online streaming and distribution. - Converting music files to OGG format for use in open-source media players or Linux systems. - Reducing audio file sizes for mobile apps or devices with limited storage capacity. ## Frequently asked questions ### What is VBR in audio conversion? VBR stands for Variable Bitrate, which adjusts the bitrate dynamically based on audio complexity for better efficiency and quality balance. ### Which audio formats are supported for input and output? Input files can be MP3, OGG, or OPUS. Output formats include MP3, OGG Vorbis, and Opus. ### How does the VBR quality setting affect the output? Lower quality numbers (e.g., 0) produce higher quality but larger files, while higher numbers (e.g., 9) reduce file size with some quality trade-off. ### Can I keep the original audio metadata like artist and title? Yes, enable the 'Keep Metadata' option to preserve tags such as artist, album, and track information. ### What is the maximum file size I can upload? The tool supports audio files up to 80 MB in size. ## 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 - [Opus to MP3 Converter](https://elysiatools.com/en/tools/opus-to-mp3): Convert Opus audio to MP3 with selectable bitrate, resampling, and channel options - [WAV Compress](https://elysiatools.com/en/tools/wav-compress): Compress a WAV file by converting to MP3, AAC, OGG, or Opus - [Podcast Chapter Marker Builder](https://elysiatools.com/en/tools/podcast-chapter-marker-builder): Build every podcast chapter format from one timecoded list: Podcasting 2.0 JSON + RSS tag, ID3v2.4 CHAP+CTOC burned into an MP3, Vorbis comments, mp4chaps, YouTube timestamps and SRT, with a per-player support matrix. - [Audio Set CBR](https://elysiatools.com/en/tools/audio-set-cbr): Re-encode audio using Constant Bitrate (CBR) - [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 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. ## Samples - [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 - [Copyright-Free OGG Vorbis Audio Samples](https://elysiatools.com/en/samples/ogg-samples): Open-source OGG Vorbis audio samples for testing and development, featuring excellent compression with nature sounds and meditation music ## 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.