|
41. Peg-4 multimedia standard
|
| bet | 1/4 | | Sana | 21.04.2024 | | Hajmi | 18.48 Kb. | | #203355 |
Bog'liq YN 1685465441 (2), 3-ШАХСИЙ ТОПШИРИҚ 2023, opertizim 1 mus ish, 025827219, 1683343696, Document 2
41. PEG-4 multimedia standard
The MPEG-4 standard was developed in the early 1990s for the transmission of multimedia information (sound, low-frame television, graphics, text, etc.) on small bandwidth channels of the Internet with a digital flow rate of 64Kbit/s. Initially, MPEG-4 was not designated as a television standard from its inception and processed images at 15 fps (352x288) making up a quarter of the format. However, the new standard quickly moved beyond this limitation, and by October 1998, the first version of MPEG-4 appeared, and in December 1999, the second version was adopted as a special standard of the ISO/IEC 14496 international standard.
42. MPEG-4-10 (H.264) video coding..
MPEG-4 Part 10, also known as H.264 or AVC (Advanced Video Coding), is a widely used video coding standard for compressing video files. It is known for its high compression efficiency, which allows for high-quality video to be compressed into smaller file sizes. H.264 is commonly used in various applications, such as video streaming, video conferencing, and Blu-ray discs.
43. Generalized organizational chart and analysis of MPEG-4 video encoder.
A generalized organizational chart for an MPEG-4 video encoder may include the following key components and their relationships:
1. Input Processing Module: Responsible for receiving raw video input and preparing it for encoding. This module may include functions such as frame rate control, color space conversion, and resolution scaling.
2. Motion Estimation Module: Performs motion estimation and compensation to identify and remove temporal redundancies in the video sequence. This is a crucial step in achieving high compression efficiency.
3. Transform Coding Module: Converts spatial redundancies in the video frames into frequency domain coefficients using techniques like Discrete Cosine Transform (DCT). This module is essential for achieving further compression.
4. Quantization Module: Quantizes the transformed coefficients to reduce the bit depth and discard unnecessary information. The quantization step is responsible for controlling the trade-off between compression ratio and video quality.
|
| |
