How to Create hdvd

Author: Feng Qiang 2004.11.15

Skynet link: http://www.yesky.com/ColumnArea/217034812114862080/20041118/1877267.shtml

The so-called hdvd (high-capacity DVD) has been on the market for a long time. At that time, netizens from some technical websites had a very lively discussion until the hdvd discs of a large number of TV series on the market hit the genuine market, the hdvd issue was followed by the media. Hdvd, analyzedArticleI will not go into details here. readers who are not clear can refer to the article 《Investigation: real contact with pirated and compressed DVDs (multiple images).

I would like to comment on hdvd in one sentence, "hdvd is a VCD with a DVD coat ". When the hdvd phenomenon was just burst by the media, some people wrote that the quality of hdvd is inferior to that of DVD and VCD. According to my knowledge, the quality of hdvd can be quite good as that of genuine VCD. Some unscrupulous piracy vendors do not hesitate to reduce the bit rate of images and sounds in order to compress the number of discs. What's more, in order to catch up with other pirated versions, the moderator converted the RM-format video files downloaded from the network into MPEG files and then squashed them, the Website Logo and warning information are generated during playback.

The name of the hdvd may be the name of the pirate, also known as hdvd9, compressed DVD, and omnipotent DVD. In the final analysis, it is to make people think this is "value ". The disk used by hdvd is actually a D5 disc (single-sided single-layer, with a capacity of 4.7 GB). As the prices of D5 dvdr discs and DVD +/-RW recorders go down one by one, the technical and financial thresholds for illegal copying and piracy of DVDs and hdvds have been greatly reduced. Hdvd originated from the entertainment experience of amateur video and video technology. In this circle, it is called "pcdvd ". As the name suggests, this type of disc must be edited, encoded, and other technical processing on the computer before it can be burned into a disc.

Coincidentally, I made a dish like this one year ago under the guidance of a friend. However, instead of TV series and movies, I made C ++ lecture series from the Central TV University. Because there was no DVD recorder at the time, I saved a 4.3g IMG image file. Here, I will give a brief introduction to the hdvd production process and unveil its secret. In order not to be counterproductive in cracking down on hdvd piracy, I will not talk about technical details or pictures, but only about the production process.

First of all, make the source is preferably MPEG-1 encoding files, VCD disc DAT files can be copied to the hard disk and the DAT suffix into MPG backup. If the file is in RM, rmvb, Avi, and other stream media formats, you can use the Tool tmpgenc to convert the format. Then it is estimated the size of the eventually generated hdvd disc. Although the D5 dvdr can be burned to a maximum of 4.7 GB, some new recorders can even be ultra-engraved, but for compatibility consideration, generally, it is better not to exceed 4.5 GB. A TV series usually takes about 40 minutes (from the beginning to the end). The normal VCD bit rate is less than 500 mb, and a dvdr is 8 ~ 10 sets are not a problem. Many piracy vendors tend to adjust the video bit rate to reduce the cost of disk space.

Step 2: Go to the hdvd production stage. Generally, create a DVD project using tmpgenc DVD author and go to "create source code ", add the title, opening part (multiple MPG files with independent headers and tails), credits, create a DVD menu, and output it to the hard disk. The output file is the vob file we see on the DVD disk, with windvd or powerdvd player to view, is a MPEG-2 encoding, but the video resolution and bit rate are maintained by the original MPG file (MPEG-1 encoding) the audio is converted to a 48 K bit rate. In fact, in the production process tmpgenc did not re-code the original file MPEG-1, therefore, the quality of hdvd depends on the quality of the original VCD and whether it is compressed during the production process (lowering the bit rate ). Therefore, the quality of converting from VCD to hdvd is at most the same as that of the original, and will never improve.

The third step is to use the DVD burning software to generate a DVD image file or engraved into a DVD disc, the disc is generally selected DVD-R, not only cheaper than the DVD + R, and better compatibility (for earlier DVD players ). If quality is not required, the dvdrecording 3.5 developed by Ulead is a silly software in this field, and all the above steps can be easily completed.

I would like to briefly introduce the hdvd production process here. Of course, I do not encourage everyone to do DIY, but it is understandable if it is used to organize home audio and video materials. From the hdvd production process, it can be called a VCD collection. Although there is a DVD appearance, it has a VCD core. Sales of dvdr disks on the market 5 to 5 ~ 7 yuan can be bought, a large number of wholesale must be cheaper, and piracy will never buy good quality genuine disc, plus the cost of burning and printing packaging, the profit of a single disc is definitely higher than 50%. When hdvd was just reported, it was suggested that genuine publishers use this format to release it to combat piracy. In fact, even if the genuine version is used, the hdvd, together with the royalty and channel fee, will never be the opponent of the pirated hdvd. With the rapid development of the DVD burning technology, if D9-format recorders and discs fall below the current price of D5, there will be a so-called "hdvd9" in the real sense. Do you want to follow up on the genuine version? If I do follow up, will a 20-episode genuine hdvd be sold for less than 10 yuan? Therefore, using methods to reduce the quality of piracy will not only prevent piracy, but also further break the genuine market.

For hdvd, in addition to the efforts of relevant national departments, it is more important to make "genuine" Things worthwhile. Why are there so many people buying the D9 dual-Disc Edition "Lord of the Rings", why is the commemorative version of the military bag "brothers" sold out of stock? Why is the sales volume of the "Dream of Red Mansions" DVD hard‑pack so high, it is because of its high quality and valuable collection. I believe that, while combating piracy, efforts are made to improve the quality of domestic DVD discs. If, for example, some audio and video companies in China make a DVD of the so-called "film version" to make quick money, or to prevent piracy and let the company logo fly around on the screen, sooner or later they will find their appetite. If the packaging and image quality of genuine DVDs cannot be different from that of pirated DVDs, instead of making consumers feel that things are worth the money and always "last", why should consumers buy genuine ones !?

The emergence of hdvd is a bad thing and a good thing. It allows us to reflect on whether our genuine products are sold too expensive? Can our movie fares be affordable to ordinary people? Can we provide more consumption methods, such as chain genuine disc rental, online broadband and digital TV programs with reasonable charges. Piracy can be available on the market, indicating that its popularity is shared by the masses. It is a concern of the whole society that how to prevent piracy while allowing consumers to purchase genuine and consciously buy genuine products. (End)

Postscript (a supplement): the emergence of hdvd has its own reasons. It is one of the reasons for its simplicity of production technology, the profit of piracy providers, and the affordability of consumers. Due to the lack of video, music (mV, karaoke, concerts, etc.) and educational discs in the DVD format on the market, the sale of DVD players has been tepid. According to the survey, many users have bought DVD players, it is still dominated by playing vcdns. After the emergence of hdvd, many enterprises privately believe that the emergence of hdvd will boost the sales and production of DVD machines. For hdvd, hardware (drive manufacturer) and software (audio and video publishing companies) can be seen as cool and cool, which is similar to pirated software for PC producers and software vendors. Some audio and video companies in Guangdong have already taken the initiative to crack down on hdvd, but after all, they are weak and need strong support from relevant national departments. The issue of hdvd is a microcosm of Chinese pirated software and a touchstone to test China's intellectual property protection determination. We will wait to see if it remains tomorrow.

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Feng Qiang, it maintainer and free commentator. The above remarks only represent the author's personal position!
At present, he works for Changhong multimedia Industry Co., Ltd. and is in charge of the Information Management Department of the Technical Service Center.
15 years of IT information management experience, focusing on Business Process Reconstruction and project risk assessment.