The Ogg file format is a free, open container format maintained by the Xiph.Org Foundation. It is designed for streaming and manipulation of high-quality digital multimedia. While Ogg can contain various codecs for audio, video, and text (like subtitles), it is most commonly associated with the Vorbis audio codec. Vorbis is a lossy audio compression format, similar to MP3 and AAC, but it is completely free and unencumbered by patents. This makes it a popular choice for open-source projects and users who prioritize freedom and accessibility. Ogg Vorbis files are known for providing good audio quality at relatively small file sizes. The format supports variable bitrates, allowing for a trade-off between file size and audio fidelity. It's widely used for music, podcasts, and other audio content. The Ogg container's flexibility also allows for embedding metadata, such as track titles, artist information, and album art.