The CD is not exactly the music format, but some data recorded in the form of audio tracks.

MP3 is definitely not the best in terms of sound quality, while CD is recognized as the best in sound quality, and the losses of FLAC, APE and WAV generated on this basis are also very small. MP3 is characterized by both sound quality and volume, so it is versatile.

if you burn the files in your computer into a data CD, the original file format, opening mode or using method will remain unchanged. however, when you burn the audio files into a music CD, regardless of the format and parameters of the original files, they will be converted into 441Hz, 16bit and stereo tracks and stored on the CD. When viewing the CD from "My Computer", there are only shortcut files such as Track1.cda and track2.cda. Double-click them to play the corresponding tracks, but instead of the original audio files, the data in the CD track will be played.

2. What's the format of the songs on the DVD

You want to engrave them! Songs with videos.

There are many formats, depending on what format your DVD player supports. If your DVD player is relatively new and good, it will support RMVB format. (It is recommended to be the first choice, but pay attention to the previous topic-as mentioned above.) If your DVD player is relatively new (products of the recent generation), it will generally support AVI format. It is recommended that this DVD player is better than DVD format, with small space and high definition, which is also common (. The disc you bought should be in DVD format (that is, DVD-9 disc). I won't say much. Let's list it from high to low. RMVB, AVI, MP4 (there are many encoding types of MP4, which may not be supported, so it is not recommended to choose) DVD,SVCD,VCD. This is a common format of DVD. Please read the manual of your DVD player and the supported formats listed above. Choose one of the supported formats. Sincerely answer for you, if not, please forgive me.

3. How to copy the music from the CD without loss

Extract the audio track and use the track grabbing software, such as windows media player;

1. put the CD in the CD drive and open the windows media player.

2. Click Options to rip music.

3. select "windows media audio lossless" in the format option of ripping settings. Be careful not to select "windows media Audio" and "windows media Audio (Variable Bit Rate)", which are lossy audio formats.

common lossless audio formats: wav,wavpack,ape,flac,tak

extended information:

wma is a lossless music format, and its sound quality is the same as that of CD in theory. But the capacity is very large, and a CD is about 4MB.

is a lossy music format, and its data has a certain loss, so the sound quality is naturally inferior to that of CD and WMA lossless music. But this format is still popular and not out of date.

by the way, if you listen to it on your computer, and you don't have a separate sound card on your computer, you won't hear the difference between WMA and MP3.

4. What are the requirements for originality of works protected by copyright law?

1. I don't remember that there is a requirement for originality in the Copyright Law, but it should be "originality". The copyrighted works must have been completed by the author.

2. I don't understand the question about "…".

works and carriers are two things, and some works need to be spread by the body. For example, a piece of music can be bought and sold on a CD, or in the storage space of a network server, and so on.

3. Ideas can be protected by intellectual property rights, but the scope of protection may not be what you think. Intellectual property rights include many kinds. Broadly speaking, intellectual property rights are the fruits of human wisdom. Specifically, it includes many kinds, such as patent right, copyright right, trademark right, integrated circuit layout design, new plant varieties and so on. These have specific contents stipulated by relevant laws and regulations.

4. The copyright of movies contains many kinds, and hundreds of words are unclear, hehe. The lighting engineer has the right of signature.