One, M-JPEG
M-JPEG technology is motion still image compression technology. It processes moving video sequences as continuous still images. This compression technique compresses each frame individually and completely. Each frame can be stored randomly in the editing process. Perform frame-accurate editing. However, M-JPEG only compresses the spatial redundancy in the frame and does not compress the time redundancy between the frames. Therefore, the compression efficiency is not high.
Second, MPEG-4
The so-called MPEG-4 standard refers to a set of standards developed by ISO's Moving Picture Experts Group on compression and decompression technologies for audio and video signals and multimedia signals. The MPEG-4 compression factor is 450 times (up to 800 times for still images), and it is the latest MPEG standard for mobile communication devices such as mobile phones that transmit audio/video signals on the Internet in real time. The biggest difference between MPEG-4 and MPEG versions in the past is that MPEG-4 uses a "layer" method that intelligently selects the differences in the images and edits the images individually under compression to make the image files. The capacity is greatly reduced, and the transmission of audio/video is accelerated.
Third, H.264
H.264 is a new digital video coding standard developed by ITU-T's VCEG and ISO/IEC MPEG Joint Video Group. It is both ITU-T H.264 and ISO/IEC MPEG-4. Ten parts. With the same reconstructed image quality, H.264 can save about 50% code rate compared with H.263, which is about 33% more performance than the current video format implemented according to MPEG-4.
M-JPEG technology is motion still image compression technology. It processes moving video sequences as continuous still images. This compression technique compresses each frame individually and completely. Each frame can be stored randomly in the editing process. Perform frame-accurate editing. However, M-JPEG only compresses the spatial redundancy in the frame and does not compress the time redundancy between the frames. Therefore, the compression efficiency is not high.
Second, MPEG-4
The so-called MPEG-4 standard refers to a set of standards developed by ISO's Moving Picture Experts Group on compression and decompression technologies for audio and video signals and multimedia signals. The MPEG-4 compression factor is 450 times (up to 800 times for still images), and it is the latest MPEG standard for mobile communication devices such as mobile phones that transmit audio/video signals on the Internet in real time. The biggest difference between MPEG-4 and MPEG versions in the past is that MPEG-4 uses a "layer" method that intelligently selects the differences in the images and edits the images individually under compression to make the image files. The capacity is greatly reduced, and the transmission of audio/video is accelerated.
Third, H.264
H.264 is a new digital video coding standard developed by ITU-T's VCEG and ISO/IEC MPEG Joint Video Group. It is both ITU-T H.264 and ISO/IEC MPEG-4. Ten parts. With the same reconstructed image quality, H.264 can save about 50% code rate compared with H.263, which is about 33% more performance than the current video format implemented according to MPEG-4.
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