Free online EVO to OGG converter

What the EVO format is

In the Audio category, EVO refers to the HD DVD video-object container, which can hold MPEG-2 video together with Dolby Digital, DTS, or PCM audio streams. HD DVD authoring applications create EVO files inside an HD DVD title structure; they are also found in disc backups and captures made from HD DVD media.

An EVO file is not an audio-only format. To create OGG audio, conversion software must read the container, select an audio stream, and encode that stream as Ogg Vorbis.

What the OGG format is

OGG is a multimedia container commonly used for Ogg Vorbis audio. Vorbis provides lossy compression, supports common sample rates and channel layouts, and is supported by many desktop players, media libraries, games, and web applications.

OGG is useful when a smaller file is preferable to uncompressed PCM or a lossless source. It is less suitable when the audio must be preserved exactly, because converting Dolby Digital, DTS, or PCM to Vorbis is normally a lossy step.

How to convert EVO to OGG

Using the online converter

1. Open the EVO-to-OGG converter on 101convert.com; the service can be used free without installing software.
2. Upload the .evo file and choose OGG as the output format.
3. If the file contains multiple audio streams, select the required language or track when the converter provides that option.
4. Start the conversion and download the resulting .ogg file.

Using FFmpeg on a computer

FFmpeg can extract the first audio stream and encode it with the native Vorbis encoder:

ffmpeg -i input.evo -map 0:a:0 -c:a libvorbis -q:a 5 output.ogg

-map 0:a:0 selects the first audio stream instead of accidentally selecting the video. Change the stream index to 0:a:1 or another value for a different track. The -q:a 5 setting gives a medium-high variable bitrate; use values from 0 to 10, with higher values generally producing larger files.

To inspect available streams before converting, run:

ffprobe input.evo

If FFmpeg reports several audio tracks, identify their language and codec in the output, then select the desired stream with -map. Add metadata when needed:

ffmpeg -i input.evo -map 0:a:0 -c:a libvorbis -q:a 5 -metadata title="Track title" -metadata artist="Artist" output.ogg

Quality and compatibility considerations

Every conversion to Vorbis re-encodes the source audio. Avoid repeated conversions, and use a higher quality setting if the source contains music or multichannel audio. Some players accept only stereo OGG files, so downmix when required with -ac 2.

For maximum compatibility, use a standard Vorbis OGG output rather than an OGG file containing an alternate codec. If the EVO contains no readable audio stream, or uses encryption or an unsupported stream type, the video may need to be decrypted or remuxed with compatible software before extraction.