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2. Comparison of video codecs - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_video_codecs

   Comparison of video codecs. Α video codec is software or a device that provides encoding and decoding for digital video, and which may or may not include the use of video compression and/or decompression. Most codecs are typically implementations of video coding formats. The compression may employ lossy data compression, so that quality ...

3. High Efficiency Video Coding - Wikipedia

   en.wikipedia.org/wiki/High_Efficiency_Video_Coding

   HEVC / H.265 / MPEG-H Part 2. High Efficiency Video Coding (HEVC), also known as H.265 and MPEG-H Part 2, is a video compression standard designed as part of the MPEG-H project as a successor to the widely used Advanced Video Coding (AVC, H.264, or MPEG-4 Part 10). In comparison to AVC, HEVC offers from 25% to 50% better data compression at the ...

4. Video coding format - Wikipedia

   en.wikipedia.org/wiki/Video_coding_format

   Video coding format. A video coding format[a] (or sometimes video compression format) is a content representation format of digital video content, such as in a data file or bitstream. It typically uses a standardized video compression algorithm, most commonly based on discrete cosine transform (DCT) coding and motion compensation.

5. x265 - Wikipedia

   en.wikipedia.org/wiki/X265

   x265 is an encoder for creating digital video streams in the High Efficiency Video Coding (HEVC/H.265) video compression format developed by the Joint Collaborative Team on Video Coding (JCT-VC). [4][5][6] It is available as a command-line app or a software library, under the terms of GNU General Public License (GPL) version 2 or later; however ...

6. Comparison of H.264 and VC-1 - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_H.264_and_VC-1

   Overview. VC-1. H.264. Goals. Designed to offer very high image quality with excellent compression efficiency [1] Designed to meet a variety of industry needs with many profiles and levels, allowing for varying compression, quality and CPU usage levels, where the lowest level is for portable devices, designed with low CPU usage in mind, while ...

7. Context-adaptive binary arithmetic coding - Wikipedia

   en.wikipedia.org/wiki/Context-adaptive_binary...

   Context-adaptive binary arithmetic coding (CABAC) is a form of entropy encoding used in the H.264/MPEG-4 AVC [1][2] and High Efficiency Video Coding (HEVC) standards. It is a lossless compression technique, although the video coding standards in which it is used are typically for lossy compression applications.

8. Video compression picture types - Wikipedia

   en.wikipedia.org/wiki/Video_compression_picture...

   A sequence of video frames, consisting of two keyframes (I), one forward-predicted frame (P) and one bi-directionally predicted frame (B). Three types of pictures (or frames) are used in video compression: I, P, and B frames. An I‑frame (Intra-coded picture) is a complete image, like a JPG or BMP image file. A P‑frame (Predicted picture ...

9. Theora - Wikipedia

   en.wikipedia.org/wiki/Theora

   Theora is a variable-bitrate, DCT -based video compression scheme. Like most common video codecs, Theora used chroma subsampling, block -based motion compensation and an 8-by-8 DCT block. Pixels are grouped into various structures, namely blocks, super blocks, and macroblocks. Theora supports intra-coded frames ("keyframes") and forward ...