I think there is some inaccuracy in the explanation of the terminology of movie releases. For example, PROPER does not mean perfect quality, and TS or Telesync does not mean conversion from a projector. In fact, both Telesync and CAM are recorded in theaters using digital camera or camcorder (commonly known as gun version), and the quality fluctuates greatly.

CAM

Usually stolen from movie theaters with a digital video camera. Sometimes a small tripod is used, but most of the time it's not possible so the camera shakes. At the same time, because the seat where the camera is placed is not always empty, sometimes the shooting is not horizontal. With a good post-crop this would be hard to see unless there are subtitles below the screen. Since the sound is recorded from the camera's own microphone, the audience's laughter and other sounds are often recorded, especially in comedies. Because of these factors, picture and sound quality are often poor. But sometimes you're lucky enough that the theater is quite empty, so you get better sound.

TELESYNC (TS)

In addition to using an external sound source (usually the headphone jack on the theater seat for people with hearing loss), TELESYSNC (TS) and CAM The standards are the same. This direct sound source is not guaranteed to be a good sound source because it is interfered by a lot of background noise. Many times TS is recorded in an empty theater or in a projection room with a professional camera, so the image quality may be better than CAM. Quality can vary greatly, so it's best to check SAMPLE before downloading. A large percentage of TS are mislabeled from CAM.

TELECINE (TC)

Using a telecine machine to digitally copy directly from film, the image and sound quality should be very good. However, TC is rare due to the high cost and equipment used. Usually the correct aspect ratio is used, but sometimes 4:3 TC is available. Jurassic Park III is a great example. TC should not be confused with TimeCode, which is a counter visible on the screen.

SCREENER (SCR)

SCREENER (SCR) is sent to video rental stores and other places for promotional purposes before the movie is released on VHS tapes. SCREENER uses VHS tapes and usually uses a 4:3 (full screen) aspect ratio, but sometimes LETTERBOXED (1.85:1 widescreen) SCREENER. The main disadvantage is that there is a "TICKER" (message that scrolls at the bottom of the screen) , containing copyright and anti-piracy phone numbers). Also, if the videotape contains any serial numbers or markings that could lead to the origin of the tape, these markings must be obscured, usually by using a black spot to cover the above area. Sometimes these marks only appear for a few seconds, sometimes they may appear in a movie unfortunately, and sometimes they can be quite large. Depending on the equipment used, the quality of the screener can range from excellent, if it is copied from a master, to poor, if it is recorded from a ripped copy, while using poor capture equipment and video recorders. Most SCREENERs are converted to VCD, and now SVCD is also available; some look better than others.

DVD-SCREENER (DVDscr)

DVD-SCREENER (DVDscr) is similar to SCREENER, but converted from DVD. Usually 1.85:1 widescreen, but does not include the extras included in the retail version. TICKER is often not in the black border, so it will affect viewing. If the converter has a little skill, DVDScr should be fine. Usually converted to SVCD or DivX/XviD.

DVDRip

DVDRip is a DVD rip from the final version. If possible, use a pre-release version (for example, Star Wars 2). The quality should be very good. Usually distributed as SVCD or DivX/XviD.

VHSRip

VHSRip is a remastered version of a retail VHS video tape, mainly for the release of skating/sports content.

TVRip

Television dramas transferred from television (preferably captured from digital cable/satellite television), or pre-broadcast programs transmitted by satellite to television networks several days in advance ( Does not contain encryption but sometimes has snowflakes). Some shows, such as WWF RAW IS WAR, contain redundant parts; "DARK MATCHES" and CAMERA/COMMENTARY tests are included in the TVRip. PDTV is captured from a PCI digital TV card and usually works best; cracking groups tend to use SVCD for distribution. VCD/SVCD/DivX/XviD rips are also used to release TVRip.

WORKPRINT (WP)

WORKPRITN (WP) is a transfer from an unfinished film copy and may be missing footage and music. Quality can range from the best to very poor. Some WPs may be far from the final version.

(The WPs for MEN IN BLACK lost all the aliens and replaced them with actors); others include redundant footage (Jay and Silent Bob). WPs can be used as add-on collections once a good quality final version is produced.

DivX Re-Enc

DivXRe-Enc is a smaller file encoded with DivX that is released from the original VCD. Usually found on file sharing networks. They are usually named in the form Film.Name.Group(1of2) etc. Common publishing organizations include SMR and TND. These versions are usually not worth downloading unless you don't know a particular movie and just want the 200MB version. Generally should be avoided.

Watermarks

Many movies from Asian Silvers/PDVD (see below) bear producer marks. Usually a letter, initials or icon located in the corner of the screen. The most famous ones are "Z", "A" and "Globe".

Asian Silvers / PDVD

Asian Silvers / PDVD is a film released by Asian pirates, usually purchased by some distribution organizations for their own distribution. Silvers are cheap and easy to find in many countries. It is easy to release Silvers, so there are many releases now, mainly by small organizations; these organizations usually release a few RELEASEs and then disappear. PDVD is the same as Silver, but it is pressed on DVD. PDVD usually has external subtitles and the quality is better than Silver. PDVD is converted like ordinary DVD, but usually uses VCD format to publish Scene Tags to publish the file's logo.

PROPER

According to the release rules, the first organization to release Telesync (TS) wins the competition (released by TS). However, if the release is of poor quality and another organization has another TS version (or a better quality version of the same source), then the mark PROPER is added to the directory to avoid duplication. PROPER is the most subjective mark, and many people will argue whether PROPER is better than the original release. Many publishing organizations release PROPER simply because they lost the publishing competition. The reason for publishing PROPER should always be included in the NFO file.

SUBBED

For VCD releases, SUBBED usually means that subtitles have been pressed into the movie. They are usually in Malay/Chinese/Thai etc, sometimes in both languages. They may take up a large portion of the screen. SVCD supports external subtitles, so DVDRip is released with external subtitles. This information can be found in NFO files.

UNSUBBED

When a subtitled SUBBED version of a movie has been released, an unsubtitled UNSUBBED version may also be released.

LIMITED

LIMITED movie means that the movie is only shown in a limited number of cinemas, usually less than 250. Typically releases of smaller films (such as arthouse films) are LIMETED.

INTERNAL

INTERNAL was released for several reasons. Classic DVD organizations have many .INTERNAL. releases so there is no confusion. At the same time, low-quality releases are marked INTERNAL so that they do not reduce the reputation of the publishing organization or due to the number of releases. INTERNAL releases are normally available on the organization's member sites, but they cannot be exchanged to other sites without request from other site administrators. Some TERNAL releases still flow to IRC/NEWSGROUP, which usually depends on the movie and its popularity. Earlier this year, people called CENTROPY INTERNAL. This means that the publishing organization publishes only to its members and site administrators. This is different from its usual meaning.

STV

STV means that the movie was released without ever being shown in theaters, so many popular websites do not allow STV.

ASPECT RATIO TAGS

*ws* means wide screen, *FS* means full screen.

RECODE

RECODE is a previously released version, usually filtered with TMPGenc encoding to remove subtitles, correct colors, etc. Although they look better, this is generally not considered good practice as publishing organizations should seek out their own sources.

REPACK

If the release organization releases a bad version, they will release REPACK to fix the problems.

NUKED

A release may be NUKEd for a variety of reasons. Some websites will publish NUKE because it violates their rules (for example, TS versions are not allowed to be published).

But if the released version has big problems (such as no sound for 20 minutes, CD2 is the wrong movie or game), then all websites will NUKE this release. People who exchange NUKED versions on these sites will lose their credibility. But NUKED releases can still spread through P2P/USENET, so you should always find the reason why it was NUKEd first just in case. If a publishing organization discovers a problem with their distribution, they can request NUKE.

Reference: itpub