![]() The multi-platform CCExtractor program can be used to create a timed-text file from captions on a DVD. A program such as IFOedit can display the contents of information (.IFO) files on a DVD to reveal details such as program length and subtitle languages. VOB files within each title set often shows that one program on the disc is much longer than the others. With feature films, the longest program on the DVD is usually the one targeted for processing. Other approaches are sometimes useful as well. Options in such program can reveal which title number is being played, and can also reveal details such as program length, subtitle languages, and types of captions. The simplest way to determine which title set number to process is often to explore the DVD with a ripping program such as DVDFab or MacX DVD Ripper, or by playing the video with a media player such as VLC. This is usually not difficult, but is not always straightforward. The only real problem is that the title set numbers on the DVD don't correspond in any direct way to human-readable titles such as "Gone with the Wind" or "Episode 3." This requires identifying which title set, out of two or more, contains the desired program. Typically, a DVD is processed to extract one video program, with its captions, out of several that exist on a DVD. VOB file, and title set 3 is comprised of two. VOB files, numbered 0 through 2, title set 2 is comprised of a single. The files depicted here include three title sets, numbered 1, 2, and 3. The 'VTS" in these file names stands for Video Title Set, and is followed by the identifying number of the title set. A DVD might, for example, contain files such as these: VTS_01_0.VOB VOB file reflects the identifying number of the title set and the position of the. While title sets are often numbered sequentially, this is a matter of practice rather than requirements, so each title set number is actually an arbitrary identifier. Each separate program on a DVD is called a title set, and each title set is identified by a number. VOB files in numerical order.Ī DVD often contains multiple programs, such as multiple episodes in a series or a main movie and companion programs. VOB files making up a single video program are numbered sequentially, and seeing the program correctly requires playing the. ![]() VOB file is roughly 1GB, so longer video programs require multiple. VOB, containing all or part of a video program together with any related audio, subtitle, and caption data. Each video object is a file with the extension. One or more video objects will reside within that folder. On commercial DVDs, video programs are always located in a folder named VIDEO_TS. Some DVDs have both, and in such cases both must be inspected to determine which is to be retained in the streamable video file. ![]() Newer DVDs tend to have only subtitles (separate video streams) and no captions. Many older DVDs, especially if they contain programs that originated as television broadcasts, have captions (the reserved channel within the video program) and no subtitles. Most programs that can rip DVD programs into computer files do NOT carry captions forward into the output, so the steps needed to extract and remix the captions is described below. Most programs that can rip DVD programs into computer files can include subtitles just be clicking a menu choice, so that process is not described here. Because captions and subtitles are stored differently on a DVD, different software and procedures are needed to ensure that they are retained when a DVD is processed into a streamable file. On commercial DVDs, the term captions usually refers to data on a reserved channel within a video stream, while the term subtitles refers to separate video streams that can be overlaid on top of the main video stream. In practice, this distinction is often blurred. Theoretically, subtitles transcribe the text of spoken dialog within a program, while captions transcribe spoken dialog and also describe important background noises. This research guide describes the process of extracting captions, and not subtitles, from commercial DVDs for the purposes of creating a streamable video file.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |