What is the difference between MP3 and MP4?
MP3 technology has been around for a few years.
On an ordinary music CD, it can only contain 60 to 90 minutes of music (about 15 songs), but if MP3 technology is used, the number of songs that can be stored on a CD of the same capacity will be ten times elderly. from a normal CD! —- MP3 uses MPEG Audio Layer 3 technology to compress ordinary sound information with a compression ratio of 1:10 or even 1:12, but it does not sound distorted to the human ear. —- There are many programs that can play MP3 files on the Internet, such as winamp, which is good. If your sound card also supports SRS technology (introduced in the previous issue of this edition), you will definitely enjoy more beautiful MP3 sound. glad. If you mean media format: MP3 music compression format encoding algorithm is taken from MPEG-1AudioLayer3, that is, it is part of MPEG-1 audio encoding algorithm. MP3 not only has a high compression rate, but also has a high fidelity of compressed music, so it is very popular with Internet users. On the other hand, MP3 also brings copyright protection issues. For this reason, many companies are researching new music compression formats that can effectively protect copyrights. MP4 is a format designed by GlobalMusicOutlet. Although MPEG4 is also often used by simply called MP4, but there is no relationship between the two. Compared to MP3, MP4 has a higher compression rate and fidelity. MP4 files are executable files with built-in players and carry the original copyright owner’s web address and copyright notice. In addition, MP4 also uses a special digital watermark technology, which can detect the music source even when MP4 music is played via FM/AM radio. MP4 has made many new attempts at copyright protection, and is expected to be welcomed by publishers, but certainly not as popular as MP3 by most Internet users. If you mean the player: We know that the biggest drawback of MP3 players is that they can only hear your voices and not see your people. Although there are many large-capacity color screen MP3 players on the market, they generally remain at the image display level It’s a pity that you can’t enjoy video files. And MP4 is different. You can listen and watch, and it has rich entertainment functions. It is an entertainment novice in the digital age, and it is a big step forward than MP3. At present, most of the international manufacturers consider MP4 as their flagship product and add many popular features to MP4. Among them are complete portable theaters like the ARCHOS AV400. AV400 is based on video playback, audio playback, video recording, voice recorder, nearly 10 functions such as video output, mobile hard drive, digital camera add-on function have won the title of “Almighty King of Digital Entertainment” from just one time. At the same time, other MP4 functions on the market are also very rich. Entertainment pioneer. Take ARHCOS AV420 as an example, equipped with a 20GB hard drive, it can store more than 30 movies in MPEG-4 format, record and play 5000 pieces of music, and store tens of thousands of digital photos for up to 40 hours of TV. shows 3. 0 fast transmission interface, can be used as a mobile hard disk. The industry believes that this kind of pocket-size digital entertainment product, which is compatible with MP3 and is based on “MEGP-4 dynamic picture decoding technology, can perform” move with you “(movies) on the TFT screen at high-definition color, you are taking with powerful audiovisual functions.”The magic wand of MP3 guides the development of digital mobile technology. However, although MP3 and MP4 have similar names, they are not completely substitutes. The appearance of MP4 is not to kill off MP3. The relationship between MP3 and MP4 is like the relationship between CD and DVD. Although they are aimed at partially overlapping consumers, they are not the same. MP3 is mainly for music lovers. In terms of MP3 music playback, MP3 works well and MP3 offers lower price and has spread very quickly in recent years. And MP4 pays more attention to video features and future digital entertainment features, focusing on the digital entertainment era, and its positioning is quite different.
