What is the difference between dvd-r and dvd+r

Difference: 1. DVD R has better compatibility than DVD-R. 2. DVD R is better than DVD-R in terms of additional writing. 3. In terms of release time, DVD-R is earlier than DVD R. 4. DVD-R addressing relies on the pre-engraved addressing information pits at the bump tracks, while DVD R addressing is achieved by phase modulation of the swing grooves at the pre-engraved grooves. 5. DVD-R needs to be pre-written with a special pre-writer, but DVD-R does not. 6. In terms of recording quality and speed, DVD R is ahead of DVD-R.

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

On weekdays, when everyone uses DVD to burn discs, they will find that these discs are divided into R and -R. Many people are not sure what the difference is between these two discs. Let’s learn about it below. .

DVD R disc

The picture below is a DVD R disc. This type of disc was originally designed to be data storage-oriented. If If you want to store data, it is more appropriate to choose DVD R discs. Due to such characteristics, DVD R discs are often used in office processes and are mainly used for data storage. In addition, another feature of this kind of disc is that it can be written multiple times until it is full, which is more suitable for people who need to write multiple times. However, it is worth mentioning that DVD R discs cannot be erased and rewritten.

##DVD-R disc

The picture below is a DVD-R disc, this kind of Discs were originally designed for audio-visual entertainment. If you want to record videos and videos, it is more appropriate to choose this type of disc. The biggest difference between this type of disc and DVD R disc is that it can only be written once and permanently. Read, but cannot be written multiple times, nor can it be erased and rewritten.

The difference between dvd r and dvd-r

1. Difference in compatibility

DVD R is the only disc certified and supported by Microsoft. Therefore, among media that use optical discs to record information, DVD R is more compatible than DVD-R.

And because DVD-R discs were originally designed for entertainment, the compatibility of DVD-R on DVD players is higher than that of DVD R.

2. Differences in append writing

DVD R disc design was initially oriented towards data storage and was only launched after the release of DVD-R , the technology has definitely improved, so DVD R is better than DVD-R in terms of additional writing.

3. Different release times

Since DVD-R was released before DVD R, DVD-R is considered more mature, while DVD R is considered more advanced.

4. Different addressing methods (mainly due to structural differences)

DVD-R uses a low-frequency (140.6kHz) wobble groove ) time, when addressing, rely on the addressing information pit pre-engraved on the bump rail. This addressing method has poor signal recognition. When the speed is high, addressing will be difficult. Therefore, -R high-speed burning will be relatively difficult.

DVD R uses high frequency (817.4kHz) swing groove time. Addressing is achieved by phase modulation of the swing groove at the pre-engraved groove. The signal resolution of this method is better than -R. , and the master disk manufacturing process is easier than -R, which is in line with what the R Alliance said is easy to burn at high speeds, easy to produce and manufacture, etc.

#5. The production process is different

After DVD-R is formed, it needs to be pre-written with a special pre-writing machine (everyone Often heard -R cable disk). DVD R is not required. About pre-writing: Due to video copyright reasons, information writing technology is set up in the DVD-R production process to verify the key chip of the DVD player. This process is called "prewriting".

6. Differences in quality and speed

By applying different technologies, DVD R has better performance than DVD-R in many aspects. For example, DVD R is ahead of DVD-R in terms of recording quality and speed. Therefore, DVD-R discs are generally cheaper than the DVD R format.

For more related knowledge, please visit the

FAQ column!

The above is the detailed content of What is the difference between dvd-r and dvd+r. For more information, please follow other related articles on the PHP Chinese website!