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The MP4 files consist of chunks of data, called atoms. These atoms stores information like subtitles, etc. These atoms stores information like subtitles, etc. The special atom, called moov atom is responsible for storing information regarding how to play the video like dimensions , frames per second and such which is important to begin playing ...
youtube-dl <url> The path of the output can be specified as: (file name to be included in the path) youtube-dl -o <path> <url> To see the list of all of the available file formats and sizes: youtube-dl -F <url> The video can be downloaded by selecting the format code from the list or typing the format manually: youtube-dl -f <format/code> <url>
mp3HD was released in March 2009 as a lossless competitor to the already popular FLAC, Apple Lossless, and WavPack.In theory, the format provided a convenient container in the form of a single file, which included the standard lossy stream playable on any mp3-capable device and the lossless data which was stored in the ID3v2 tag.
May 2009 Patent encumbered Yes [41] No No No No No [IV] [V] No Yes MPEG-1 Video: Lossy: August 1993 Expired patents [65] [66] Yes Yes Yes Yes Yes Yes Yes No MPEG-2 Video: Lossy: May 1996 Expired patents Yes Yes Yes Yes Yes Yes Yes No MPEG-4 Visual: Lossy: December 1999 Expired patents Yes Yes First edition Yes Yes Yes Yes Yes Microsoft MPEG4 V2 ...
DTS-HD Master Audio (DTS-HD MA; known as DTS++ before 2004 [1]) is a multi-channel, lossless audio codec developed by DTS as an extension of the lossy DTS Coherent Acoustics codec (DTS CA; usually itself referred to as just DTS). Rather than being an entirely new coding mechanism, DTS-HD MA encodes an audio master in lossy DTS first, then ...
The quality the codec can achieve is heavily based on the compression format the codec uses. A codec is not a format, and there may be multiple codecs that implement the same compression specification – for example, MPEG-1 codecs typically do not achieve quality/size ratio comparable to codecs that implement the more modern H.264 specification.
There is a trade-off between size and sound quality of lossily compressed files; most formats allow different combinations—e.g., MP3 files may use between 32 (worst), 128 (reasonable) and 320 (best) kilobits per second. [67] There are also royalty-free lossy formats like Vorbis for general music and Speex and Opus used for voice recordings.