Saturday, January 29, 2011

Weak current College】 【video related terminology list (2)】.

A more detailed explanation: suppose we have 10 seconds to 10 seconds of video and audio fragments. Each second of video audio with V said, with A representation that if your interlaced set to 10 seconds, a file on disk will be VVVVVVVVVVAAAAAAAAAA forms. If alternate is set to 1 second here is: VAVAVAVAVAVAVAVAVA.


Telecine for reverse engineering. This process will be the ones to 29.97fps original 24fps.

Keyframe keyframes

A full frame (frame), but this frame is compressed as possible.


The two terms were as MPEG-1 and MPEG-2 video data extensions (only video that does not contain any audio).


MPEG is a dynamic image experts group (MotionPictureExpertGroup), usually it is the source of the video format. This expert group explains digital video standards (or standard), including MPEG1 (VCD), MPEG2 standard (for DVD and SVCD), MPEG4 standard as well as several audio standards including MP3 and AAC. Use MPEG-1 or MPEG-2 standard video usually to .mpg or .mpeg as the extension.


MPEG4 is MPEG expert group (MPEGGroup) identified a series of standards (or standard), it will become the next digital video standards (mainly used for video telephony and streaming media on the Internet and more). MPEG4 allow using various encoding, such as a key frame can use ICT or Wavelet to get different output quality.


MPEG MPG can be thought of as an abbreviation, or as MPEG-1 and MPEG-2 video data extension.


MultipleMPEG4: different bitrate encoding file combination. for example, you can put 2000kbit/s and 910kbit/s encoded files are combined, using the bitrate lower file, replace the file as and 2000kbit/s part of too much and cause serious distortion of the picture here can also be two DIVX encoding combination: you may leave the lower MOTION and high MOTION files together (here you can also use a different bit rate).

Multipassencoding multi-channel coding

Before you read: current real multi-pathing encoding only exist WM8 and MPEG-2 (SCVD and miniDVD). M4C is not a true multi-channel encoding (read M4C Guide to find it actually is and how to work). A support channel encoding will be the first pathway analysis will be encoded video flow and put it face down anything. Suppose we have a dialogue scene started small fragments, which has very little cut and remain stationary cameras. And then it becomes a fight to defeat hand road, there are plenty of fast cutting and action (people flying in the sky, kick, punch, and so on). In normal CBR encoding per second will be approximately the same bitrate (hard to maintain 100% of the CBR but that is minor) but in multi-pathing VBR mode encoding will be based on a video stream of information to use the appropriate bit rate, that means the dialogue parts receive enough bitrate and the fighting part for higher bit rate. Access more bitrate, the more detailed the allocation. In a single pass VBR encoding must only in accordance with its earlier coding things knowledge to decide how many bit rates.

Wavelength division Multiplexing

Usually the video and audio is encoded separately. Then you must put them together in order to become you can play movies (of course you can in two player to play audio and video, respectively, but synchronization will become very difficult). In the reuse of audio and video tracks synthesis into an audio/video stream. Audio and video streaming seems intertwined, and include navigation information, so that the player can withdraw in fast forward/fast sampling in AV sync.

Normalizing standardization

Standardization include finding a track of peak capacity, and then increase the track to the same level of the rest. This is usually done in WAV level, that means all of the variables are integers so accurate than DRC. So in the standardization of DRC more loved.


OGM, OGg Media that was made for Oggcontainer TobiasWaldvogel additions, OGM can be seen as another AVIcontainer, it can contain OggVorbis, MP3, AC3 audio, all kinds of video format, paragraphs, and subtitles.


PGC ProGramChain said. It is a DVD compilation of frequently used terms, is basically a simultaneous playback. For example, film major part has its own PGC, DVD every trailer usually have their own PGC. When you play a disc when Studio logo has its own PGC, and so on. SmartRipper movie mode and DVDDecrypter in IFO mode will show you on a DVDAll of the PFC. For additional information about PGC & # 39 see MPUCoder; sDVDinformationsite website.

Progressive progressive scan

And interlaced (interlaced). A only includes full frame (frames) of the video stream is considered to be in. de-interlace progressive/interlaced videobasics knowledge as described.

Quantizer quantization factor

To truly understand this term you must learn signal processing courses. In general terms it means that the compression factor. The higher the value, an image is compressed, the more (and therefore high quantization factor means low image quality and small footprint and low quantization factor means that high image quality and space).

Rff/tff mark

RFF said repeatfirstframe (repeat first frame), it is used to convert the source to record 24 frames per second movie conversion as needed per second 29.97 frame technology. Using rff tag encoding movies-tag tells the player repeats. Tff represents the first is on top of the field and is used to achieve the telecine to 24fps 29.97fps film making for.


In this regard there is a lot of confusion. Basically, ripping the DVD movie copy that into your hard disk. This includes the DVD drive of the authentication (authentication) process (trying to copy from DVD to the next file, you will see a message: If your drive has not been proven that the operation is not supported) and a real CSS decoding (Descrambling) process. CSS (ContentatedScramblingSystem data interference system) is designed to prevent unauthorized copies of copy DVD movie, although many people argued that it is designed to control the DVD movie you can play, because there is no CSS license to play the DVD movie you essentially have to crack the encryption off-I very much agree with this. Ripping this word is often used (even this site) describes the entire process of decoding a DVD, and then put the audio and video conversion is called another-less-format.


SmartBitrateControl smart bit rate control. A novel called the DivX encoder Nandub in the compresses the dynamic modification during many internal parameters, give you a better quality and more control of the encoding. More information you can see Guidelines section of DivX SBC guidelines.

Streamlist stream directory

Stream directory is a path name and file name of your VOB files ASCII test, row a file. Here is a small example:

Save the file as streamlist.txt or streamlist.lst. Make sure that you save as format of ASCII text, I suggest you use Notepad to edit your current directory, because Notepad will not be saved into another format. MPeg2avi request stream directory extension is lst, however in other programs using the stream directory when you are free to choose any extension. But the GUI in the select input file name/extension is restricted, therefore if the stream directory is not in the file selection dialog box appears, then you must rename your current directory.


Put the ones into 24fps 29.97fps or 29.97x2 interlaced fields per second.


Variable-rate. Connect the audio and video are in VBR mode encoding is possible throughout the file bit rate is not fixed (as in fixed in CBR), video/audio in more complex sections will use a higher bit rate to get a better feel of the Visual/auditory, while other parts you get less bitrate.


Variable key frame interval. That basically means that the need for keyframes where no longer as usual DivX codec does follow a fixed interval insertion. There are two ways to achieve the VKI method: the first method is to unpack the compressed frames of the encoder, the comparison with the original, if the quality difference is greater than a set limit value is re-encoded. This encoding method is only applicable to a specific program: M4C. There is a command line version and one donor AviUtl plug-in (the latter in AviUtl is described in detail in the Wizard). If the limit values set too high then you will get a number of key frame of the second approach, its mainly in scene change when inserting keyframes. To this end coding programs or codecs will detect where there is a so-called "cut" (like film producers are using) exists and that the new scene the first frame of a keyframe. This can be done using mpeg2aviAr (AviRevolution part), or by installing DivXVK m4cI codec. If you use the latter don't have to worry about the encoder. Each can be DivX encoding programs can make the files in a scene change. When the VKI is reasonably used (only applies to the first method) that can help you increase or decrease in the number of key frames, so get higher quality again, this is because especially in the low bit-rate, too many keyframes will bring worse quality.


VKI + MM4 + VBRMP3 abbreviation


VOBID used to be a PGC DVD Cell within the group.


All DVD movies are stored in the vob file. Vob files usually contain mixed in Dolby Digital audio and MPEG2 format video. Vob files are named as follows: vts_XX_y.vob where XX represents the title of the heading Y represents a part of. In total there are 99 titles and 10 parts, although vts_XX_0.vob never include any video, usually just menu or navigation information. There are two ways to find out which file contains the body of the film:

Method 1: use the DVD player to play the movie, and observe the LEDs single machine or software player's status window.

Method 2: the movie's main digital continuous vob file in the digital Max. For example, have vts_05_1.vob;

Vts_05_2.vob ... vts_05_8.vob (I've never seen a partial file contains 9 movies, but that doesn't mean that does not exist).


VTS is the short name of the video title set, i.e. is a VOB file and the corresponding IFO and BUP files collection. For example, VTS2 will contain VTS_02_0.VOB (contains menu), VTS_02_1.VOB, VTS_02_2.VOB, etc., as well as VTS_02_0.IFO and VTS_02_0.BUP, etc. files. VTS is used to move the video material as well as its subsidiary files grouped together. For example, a VTS normally used for the main movie (and sometimes also including trailer and some movie company logo), other VTS for tidbits.


Microsoft copyright PC audio and video systems-it is based on a series of codes, these codes are used to play any WindowsMediaPlayer its supported format files-the latest version of the WindowsMediaPlayer is 7.0 .WindowsMedia7.0 offers a range of new code, including a fully compatible with ISO MPEG4 encoding (called WindowsVideoV1), one of the named MSVideoV7 improves MPEG-4 encoding (although I did not find it and compared based on DivX MSWindowsVideoV3 of any improvements), this kind of encoding support Deinterlacing and InverseTelecine.


EXtendedCD is an upcoming (can be translated as the next generation? feel less suitable) CD format, which allows the use of mode2 form the second way to burn your CD, this basically means that it contains fewer check code, so you can single CD store more data. XCD allows you in a plain 700MBCD store 800MB data. As I have said so, since only less check code, XCD is not very reliable, it is recommended that you only put the container with additional checking of data (such as OGM) on this CD.


XviD is a word game. Turn it upside down to read, and you'll see a familiar words. XviD is an open source MPEG-4 codec, which you can get the best DivX codec better results. XviD's home page can be seen here.

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