Compressed and uncompressed files coexist nicely on ext2 partitions. In addition to uncompressed formats, popular compressed digital video formats today include H.264 and MPEG-4. SMPTE 2022 includes provisions for both compressed and uncompressed video formats. The metadata for compressed and uncompressed digital music is often encoded in the ID3 tag. TIFF is usually either uncompressed, or lossless Lempel-Ziv-Welch compressed like GIF. It is typically expressed as the division of uncompressed size by compressed size. NDI carries video, multichannel uncompressed audio and metadata. The format of the uncompressed data is a Compound File Binary document. PCM is the method of encoding typically used for uncompressed digital audio. Some professional models allow recording uncompressed linear PCM audio. The free version supports DV, MPEG, Uncompressed and other codecs for both import and export. Gbit/s using uncompressed RGB encoding. SD-SDI output allowed to record uncompressed video. This allows a large reduction in file sizes when compared to uncompressed audio. There's also component uncompressed HD output.