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| Name | WEBM | FLAC |
| Full name | WEBM - HTML5 video | FLAC - Free Lossless Audio Codec |
| File extension | .webm | .flac |
| MIME type | video/webm, audio/webm | audio/x-flac |
| Developed by | Xiph.Org Foundation | |
| Type of format | video file format | Audio |
| Description | WebM is a video file format. It is primarily intended to offer a royalty-free alternative to use in the HTML5 video tag. It has a sister project WebP for images. The development of the format is sponsored by Google, and the corresponding software is distributed under a BSD license. | FLAC (Free Lossless Audio Codec) is an audio coding format for lossless compression of digital audio, and is also the name of the reference codec implementation. Digital audio compressed by FLAC's algorithm can typically be reduced to 50-60% of its original size and decompress to an identical copy of the original audio data. |
| Technical details | The WebM container is based on a profile of Matroska. WebM initially supported VP8 video and Vorbis audio streams. In 2013 it was updated to accommodate VP9 video and Opus audio. | The technical strengths of FLAC compared to other lossless formats lie in its ability to be streamed and decoded quickly, independent of compression level. In a comparison of compressed audio formats, FFmpeg's FLAC implementation was noted to have the fastest and most efficient embedded decoder of any modern lossless audio format. |
| Associated programs | VLC media player, MPlayer, K-Multimedia Player, Mozilla Firefox, Opera, Google Chrome, FFmpeg. | Windows 10, Android, Blackberry 10 and Jolla devices. |
| Wiki | https://en.wikipedia.org/wiki/WebM | https://en.wikipedia.org/wiki/FLAC |