Free online AVR to OGG converter

What the AVR format is

In the Audio category, AVR means Audio Visual Research audio, an older format used by legacy recording and sound-editing software. AVR files can contain uncompressed or simply encoded audio, often with limited metadata; files encountered today usually come from older archives, specialist applications, or discontinued Macintosh-era workflows. Modern players may not recognize the .avr extension even when the file contains valid audio.

What the OGG format is

OGG is a multimedia container most commonly used for Vorbis audio and, in some workflows, Opus audio. Ogg Vorbis provides lossy compression with substantially smaller files than uncompressed audio, making it suitable for general playback, web distribution, and space-conscious archives. Choose OGG when the destination application supports Vorbis; use another format if a device requires MP3, AAC, WAV, or a lossless codec.

How to convert AVR to OGG

FFmpeg is the most practical desktop option because it can identify many AVR files and encode Ogg Vorbis directly.

1. Install a current FFmpeg build for your operating system.
2. Open Command Prompt, PowerShell, Terminal, or another shell in the folder containing input.avr.
3. Run:

ffmpeg -i "input.avr" -c:a libvorbis -q:a 5 "output.ogg"

The -q:a 5 setting gives a medium-high Vorbis quality level. Use -q:a 3 for a smaller file or -q:a 7 for higher bitrate and larger output. Check the source before encoding with:

ffprobe "input.avr"

If FFmpeg reports that the input format or codec is unsupported, try the AVR support in SoX:

sox "input.avr" -C 5 "output.ogg"

This requires a SoX build compiled with Ogg Vorbis support. You can also convert the file for free on the 101convert.com website without installing software: select the AVR file, choose OGG as the output format, start the conversion, and download the resulting file.

Quality and compatibility limits

Conversion cannot restore detail absent from the AVR source. If the original is low-resolution, mono, or 8-bit, the OGG file retains those limitations; increasing the sample rate or bitrate only increases its size. Vorbis encoding is lossy, so keep the original AVR if it is an archival master and avoid repeated conversions between lossy formats.

OGG identifies the container rather than one mandatory audio codec. The command above creates Vorbis audio, which is broadly supported in desktop players but may be rejected by some hardware or browser-based applications. Test the converted file in the intended player before deleting the source.