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2. Comparison of video codecs - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_video_codecs

   CBR is commonly used for videoconferences, satellite and cable broadcasting. VBR is commonly used for video CD/DVD creation and video in programs. Bit rate control is suited to video streaming. For offline storage and viewing, it is typically preferable to encode at constant quality (usually defined by quantization) rather than using bit rate ...

3. High Efficiency Video Coding tiers and levels - Wikipedia

   en.wikipedia.org/wiki/High_Efficiency_Video...

   The HEVC standard defines thirteen levels. [1] [2] A level is a set of constraints for a bitstream.[1] [2] For levels below level 4 only the Main tier is allowed.[1] [2] A decoder that conforms to a given tier/level is required to be capable of decoding all bitstreams that are encoded for that tier/level and for all lower tiers/levels.

4. High Efficiency Video Coding - Wikipedia

   en.wikipedia.org/wiki/High_Efficiency_Video_Coding

   The video sequences were encoded using the HM-12.1 HEVC encoder and the JM-18.5 H.264/MPEG-4 AVC encoder. The comparison used a range of resolutions and the average bit rate reduction for HEVC was 59%. The average bit rate reduction for HEVC was 52% for 480p, 56% for 720p, 62% for 1080p, and 64% for 4K UHD. [127]

5. VP9 - Wikipedia

   en.wikipedia.org/wiki/VP9

   A main user of VP9 is Google's popular video platform YouTube, which offers VP9 video at all resolutions [52] along with Opus audio in the WebM file format, through DASH streaming. Another early adopter was Wikipedia (specifically Wikimedia Commons , which hosts multimedia files across Wikipedia's subpages and languages).

6. High Efficiency Video Coding implementations and products

   en.wikipedia.org/wiki/High_Efficiency_Video...

   Elemental provided live video streaming of the 2013 Osaka Marathon on October 27, 2013, in a workflow designed by K-Opticom, a telecommunications operator in Japan. Live coverage of the race in 4K HEVC was available to viewers at the International Exhibition Center in Osaka. This transmission of 4K HEVC video in real-time was an industry-first ...

7. Adaptive bitrate streaming - Wikipedia

   en.wikipedia.org/wiki/Adaptive_bitrate_streaming

   Adaptive streaming overview Adaptive streaming in action. Adaptive bitrate streaming is a technique used in streaming multimedia over computer networks.. While in the past most video or audio streaming technologies utilized streaming protocols such as RTP with RTSP, today's adaptive streaming technologies are based almost exclusively on HTTP, [1] and are designed to work efficiently over large ...