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2. MPEG-4 - Wikipedia

   en.wikipedia.org/wiki/MPEG-4

   MPEG-4 is a group of international standards for the compression of digital audio and visual data, multimedia systems, and file storage formats. It was originally introduced in late 1998 as a group of audio and video coding formats and related technology agreed upon by the ISO/IEC Moving Picture Experts Group (MPEG) (ISO/IEC JTC 1/SC29/WG11) under the formal standard ISO/IEC 14496 – Coding ...

3. MPEG-4 Part 2 - Wikipedia

   en.wikipedia.org/wiki/MPEG-4_Part_2

   MPEG-4 Part 2, MPEG-4 Visual (formally ISO/IEC 14496-2 [1]) is a video encoding specification designed by the Moving Picture Experts Group (MPEG). It belongs to the MPEG-4 ISO/IEC family of encoders. It uses block-wise motion compensation and a discrete cosine transform (DCT), similar to previous encoders such as MPEG-1 Part 2 and H.262/MPEG-2 ...

4. Common Intermediate Format - Wikipedia

   en.wikipedia.org/wiki/Common_Intermediate_Format

   So a CIF-size image (352 × 288) contains 22 × 18 macroblocks and a QCIF image (176 × 144) contains 11 × 9 macroblocks. The 16 × 16 macroblock concept was later also used in other compression standards such as MPEG-1, MPEG-2, MPEG-4 Part 2, H.263, and H.264/MPEG-4 AVC.

5. MP4 file format - Wikipedia

   en.wikipedia.org/wiki/MP4_file_format

   MPEG-4 Part 14, or MP4, is a digital multimedia container format most commonly used to store video and audio, but it can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet. The only filename extension for MPEG-4 Part 14 files as defined by the ...

6. Motion JPEG - Wikipedia

   en.wikipedia.org/wiki/Motion_JPEG

   M-JPEG is an intraframe-only compression scheme (compared with the more computationally intensive technique of interframe prediction).Whereas modern interframe video formats, such as MPEG1, MPEG2 and H.264/MPEG-4 AVC, achieve real-world compression ratios of 1:50 or better, M-JPEG's lack of interframe prediction limits its efficiency to 1:20 or lower, depending on the tolerance to spatial ...

7. Transcoding - Wikipedia

   en.wikipedia.org/wiki/Transcoding

   The most common operation in this application is the transcoding of MPEG-2 files to the MPEG-4 or H.264 format. Real-time transcoding in a many-to-many way (any input format to any output format) is becoming a necessity to provide true search capability for any multimedia content on any mobile device, with over 500 million videos on the web and ...