What is the video encoding standard used by vcd

The video encoding standard used by vcd is "MPEG-1". MPEG-1 is a video and audio compression format customized for CD disc media and is mainly used in VCDs. The output quality of MPEG-1 is about the same as that of a traditional video recorder VCR, and the signal quality is equivalent. This may be the reason why Video CD has not been successful in developed countries.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

The video encoding standard used by vcd is "MPEG-1".

The current compression encoding standard used for digital videos stored on VCD discs is "MPEG-1".

MPEG-1 is the first video and audio lossy compression standard developed by the MPEG organization. The video compression algorithm was defined in 1990. At the end of 1992, MPEG-1 was officially approved as an international standard. MPEG-1 is a video and audio compression format customized for CD media. The transfer rate of a 70-minute CD is approximately 1.4Mbps. MPEG-1 uses block-based motion compensation, discrete cosine transform (DCT), quantization and other technologies, and is optimized for a 1.2Mbps transmission rate. MPEG-1 was subsequently adopted as the core technology by Video CD. The output quality of MPEG-1 is about the same as that of a traditional video recorder VCR, and the signal quality is equivalent. This may be the reason why Video CD has not been successful in developed countries.

MPEG-1 is a video and audio compression format customized for CD disc media. The resolution of VCD is only about 352×240 and uses a fixed bit rate (1.15Mbps). Therefore, when playing fast-moving videos, due to insufficient data volume, the macro blocks cannot be fully adjusted during compression, resulting in video images appearing. Blurred squares. Therefore, the output quality of MPEG-1 is about the same as that of a traditional video recorder VCR. This may be the reason why Video CD has not been successful in developed countries. MPEG-1 audio is divided into three generations. The most famous third-generation protocol is called MPEG-1 Layer 3, or MP3 for short, and has become a widely circulated audio compression technology. Between each generation of MPEG-1 audio technology, the compression rate is higher than the previous generation while retaining the same output quality. The first-generation protocol MP1 was used in LD as a recorder of digital audio and Philips' DGC; while the second-generation protocol MP2 was later used in one of the audio layers of the European version of DVD.

MPEG-1 has the following features:

• Random access

• Flexible frame rate

• Variable image size

• I-frame, P-frame and B-frame are defined

• Motion compensation can Motion vectors spanning multiple frames

• Half-pixel precision motion vectors

• Quantization matrix

• GOF structure

• slice structure

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