If you have trouble playing an OGG file, it may be because it has an unusual encoding. You could have an OGG MP3 file, though no one ever does. In principle, the OGG container can be used with many different encodings. Because of its open and widely supported nature, many options are now available for how to play. The aim was to create a media format that had a public specification which anyone could implement free of charge. It got going seriously when Fraunhofer announced it would charge license fees on all MP3 software. OGG is a container format developed by the Xiph.Org foundation. The software that converts between analog signals and digital encodings is called a codec (coder-decoder). The advantage of lossy encodings is that the files are smaller. Lossy ones eliminate low-order bits, using techniques that minimize the loss of quality. Lossless encodings represent the original analog signal at the full sampling rate and bit depth. Sometimes you'll find encoded data without a container for instance, MP3 files don't use a container except for an optional metadata block.Įncodings may be lossless or lossy. The encoding is the way the audio or video is represented in bits. A container isn't limited to one encoding, though some pairings are so common they're expected. It includes a header, metadata, and a way to hold the encoded content. A file consists of a container that holds data with a particular encoding.

What is an OGG file? Media files generally have two separable aspects, and OGG follows this pattern.

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