Detective Corgi -100,000 why the forty-fourth issue
generally said:
- BD refers to Blu-ray (Blu-ray) or Blu-ray Disc (BD), so far, Blu-ray is The most advanced and most widely used large-capacity optical disc format.
- HD means HDTV, HDTV is the abbreviation of Hign Definition Television, translated into Chinese means "High Definition Television". To compare the two, the definition of BD is higher than that of HD.
1, CAM (gun version): CAM is usually stolen from a movie theater with a digital video camera. Sometimes a small tripod is used, but most of the time it is impossible to use, so the camera will shake. Therefore, we see that the picture is usually dark and the characters are often distorted, and the subtitles below are often tilted. Since the sound is recorded from the microphone of the camera, the audience’s laughter and other sounds are often recorded. Because of these factors, the image and sound quality are usually poor.
2, TS (quasi-gun version): TS is the abbreviation of TELESYNC. The standards of TS and CAM are the same. But it uses an external audio source (generally the headphone jack on the theater seat for the hearing impaired). This audio source cannot be guaranteed to be a good audio source because it is interfered by a lot of background noise. 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. But the picture fluctuates greatly. The common TS version and the repaired clear TS version
3, TC (film version) often appear on the forum: TC is the abbreviation of TELECINE. TC uses telecine to directly digitally copy from film. The picture quality is not bad, but the brightness is not enough, a little dim. In many cases, the sound source used to make TC comes from TS, so the sound quality is very poor, but the picture quality is much better than TS. If you are not too particular about it, the TC version is still a good choice.
4, DVD SCR (pre-sale version): SCR is the abbreviation of SCREENER. DVDSCR preview version or beta DVD, unofficially published version. Obtained from the preview DVD, a high-quality compressed video format through mpeg-4 technology. Can be released earlier than DVDRip, but the picture quality is slightly worse. (There are often some messages not scrolling in the black border at the bottom of the screen, including copyright and anti-piracy phone numbers, which will affect viewing.) If there is no strict division, its picture quality should be similar to the TC version.
5, HD RIP (high-definition version): HDRip is the abbreviation of HDTVRip (high-definition television resource compression), which uses DivX/XviD/x264 and other MPEG4 compression technologies to compress HDTV video images with high quality, and then encapsulate the video and audio parts into An .avi or .mkv file, and finally a video format formed by adding an external subtitle file. The picture clarity is higher.
6, DVD, HDVD, DVD5, DVD9 The full English name of DVD is Digital Video Disk, that is, digital video disc or digital video disc, which uses MPEG2 compression technology to store images.
7, R5 (Russian District 5 version): The DVD of the Russian District 5 version. Because the dubbing is in Russian, you need to find the English soundtrack. The R5 version is a synthetic version (Russia District 5 DVD video + English obtained through other channels Audio track). The picture quality of the R5 version is generally good. The audio part has different effects due to the different sources of the audio track.
8, HDVD (compressed disc or economical DVD): HDVD is commonly known as compressed disc or economical DVD. The medium is usually DVD-5 (capacity 4.7G) or DVD-9 (capacity 8.5G), using MPEG-1 or MPEG- 2 Encoding, due to the low bit rate, each disc can hold up to 7 hours of video programs, and the picture quality level is slightly higher or equal to VCD. It is the most economical for watching series.
9, BD (Blu-ray version): BD is the abbreviation of Blue Disk, translated into Chinese means "Blu-ray Disc". It is the video and audio transcribed from Blu-ray discs, the picture definition is very high. .
10 and 720P are high-level high-definition digital television format standards formulated by the Society of Motion Picture and Television Engineers (SMPTE).The effective display format is: 1280×720. SMPTE (American Society of Motion Picture and Television Engineering) divides the digital high-definition signal digital TV scan line into 1080P, 1080I, 720P (i is interlace, meaning interlace, p is Progressive, progressive meaning). 720P is a display format that achieves a resolution of 1280×720 under progressive scan. It is the fusion of digital film imaging technology and computer technology.
11, 1080P Generally, the screen resolution of 1080P is 1920×1080, which is generally called high-definition television. The effective display format is 1920×1080, and the number of pixels reaches 2.0736 million. The so-called 1080P is capable of displaying 1920*1080 programs, but the TV itself does not have the physical resolution of 1920*1080, but the 1920*1080 image is processed and reduced to the actual physical resolution of the TV and displayed. The sharpness of
refers to the sharpness of the shadow lines and their boundaries on the image. Sharpness, generally from the point of view of the video recorder, compares the image quality by looking at the clarity of the replayed image, so the term definition is often used. The camera generally uses the term resolution to measure its ability to "decompose the details of the subject." The unit is "TVLine" also called line.
means looking from the horizontal direction, it is equivalent to erecting each scan line, and then multiplying it by 4/3 (aspect ratio) to form a horizontal bus, which is called horizontal resolution. It will vary with the number of CCD pixels and the video bandwidth. The more pixels and the wider the bandwidth, the higher the resolution. The 625 lines of PAL TV sets are the nominal vertical resolution. Except for the 50 lines of reverse travel, the actual effective vertical resolution is 575 lines.
This article was compiled and released by detective Corgi
January 28, 2020
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