Free online VGZ to OGG converter

Some music players, game-music libraries, and portable devices accept Ogg Vorbis but cannot play VGZ files. Converting a VGZ file renders its chip-music commands as audio and stores the result in an OGG file.

What the VGZ format is

VGZ is a gzip-compressed VGM file. VGM files record commands sent to sound chips in video game hardware, so they are commonly used to preserve and play game music. VGZ files are encountered in game-music collections and are produced when VGM recordings are compressed; they are not ordinary recordings of audio samples.

What the OGG format is

OGG is a container format; Ogg Vorbis is a common lossy audio codec stored inside it. Ogg Vorbis can reduce file size while retaining playable audio, and is supported by many desktop players and applications. Use it when a player or editing workflow accepts OGG but not VGZ.

How to convert VGZ to OGG

Online on 101convert.com

1. Upload the VGZ file on the 101convert.com conversion page. Multiple files can be added as a batch; the page shows the per-file size limit.
2. Before converting, set the bitrate, sample rate, or channel count if needed.
3. Convert the files and download the OGG results. The conversion uses FFmpeg.

Offline with desktop software

On Windows, foobar2000 can open VGZ files with its Game Emu Player component and export audio using its Converter feature.

1. Install foobar2000, the Game Emu Player component (foo_gep), and an Ogg Vorbis encoder. Restart foobar2000 after installing the component.
2. Open the VGZ file in foobar2000 and select the track. Choose Convert → ... from its context menu.
3. Choose Ogg Vorbis as the output format, set the encoder quality, select an output location, and start the conversion.

Quality and limitations

Conversion renders the VGM chip commands into audio; it does not preserve the original command data or make an OGG file that can be edited as a VGM. Ogg Vorbis is lossy, so a higher quality setting generally retains more audible detail at the cost of a larger file. Playback and rendering can vary with the chip-emulation support and settings used by the converter.