RealVideo is a video codec designed specifically for streaming use online. They have high-quality and good compression, and are entirely free of patent restrictions, making them popular amongst many developers. The Ogg Theora and Ogg Vorbis codecs are a pair of video and audio codecs, respectively. Each of these has minor deviations from the original MPEG-4 codec to give them better compression and functionality in certain situations. A number of popular online codecs are derived from the MPEG-4 codec. It has a number of significant technical advancements and better compression techniques, can handle both interlaced and progressive-scan video, and is widely supported. While not the most advanced of the available video codecs, MPEG-2 is firmly entrenched because of its use as the standard for commercially available DVDs. While the MPEG-1 codec allows for only progressive scanning, MPEG-2 also supports interlacing, allowing for better display for its size. MPEG-2 is an incredibly high-quality standard used for DVDs.
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December 2022
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