Бейнеден субтитрлерді шығару бағдарламасы

Program that extracts subtitles from video

SubRip is a free software program for Microsoft Windows which extracts subtitles and their timings from various video formats to a text file. It is released under the GNU GPL. Its subtitle format's file extension is srt and is widely supported. Each srt file is a human readable file format where the subtitles are stored sequentially along with the timing information. Most subtitles distributed on the Internet are in this format.

Using optical character recognition, SubRip can extract from live video, video files and DVDs, then record the extracted subtitles and timings as a Subrip format text file. It can optionally save the recognized subtitles as bitmaps for later subtraction (erasure) from the source video. In practice, SubRip is configured with the correct codec for the video source, then trained by the user on the specific text area, fonts, styles, colors and video processing requirements to recognize subtitles. After trial and fine tuning, SubRip can automatically extract subtitles for the whole video source file during its playback. SubRip records the beginning and end times and text for each subtitle in the output text srt file. SubRip uses AviSynth to extract video frames from source video, and can rip subtitles from all video files supported by that program.

SubRip's default output encoding is configured as Windows 1252. However, output options are also given for many Windows code pages as well Unicode encodings, such as UTF 8 and UTF 16, with or without byte order mark (BOM). Therefore, there is no official character encoding standard for srt files, which means that any SubRip file parser must attempt to use Charset detection. Unicode BOMs are typically used to aid detection. YouTube only supports UTF 8. The default encoding for subtitle files in FFmpeg is UTF 8.

In 1999, Brain created SubRip, and a friend, David Dolinski, created SubViewer, who offered it for download on his personal website. SubViewer was included in the DivX media player. On August 28, 2008, YouTube included support for SubViewer and SubRip, allowing existing videos to be retroactively subtitled. The prospective format was later renamed WebVTT (Web Video Text Track). Google's Chrome and Microsoft's Internet Explorer 10 browsers were the first to support tags with WebVTT files for HTML5 videos. Mozilla Firefox implemented WebVTT in its nightly builds (Firefox 24), and as of Firefox 31 (July 24, 2014), Mozilla enabled WebVTT on Firefox by default. YouTube began supporting WebVTT in April, 2013.