Filename extension: .srt
Developed by: M.I.T. Media Lab
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The SRT filetype, known officially as SubRip Subtitle file, is a plain text format for storing subtitle information for video content. Developed in the early 2000s by the SubRip software program, which extracted subtitles from movies, the SRT format is widely recognized due to its simplicity and compatibility with various media players and video software.

Understanding SRT Files

An SRT file contains a series of time codes and corresponding subtitles that are displayed during playback. The straightforward structure begins with a sequence number, followed by time codes denoting the subtitle's start and end, and lastly, the subtitle text itself.

Software Compatibility

Numerous media players, such as VLC Media Player, support SRT files, enabling users to add subtitles to videos seamlessly. Popular video editing software like Adobe Premiere Pro and Final Cut Pro also allow the import of SRT files for editing and embedding subtitles directly into video content.

Alternatives to SRT

While SRT is a universally accepted format, there are alternatives like ASS (Advanced SubStation Alpha) and SSA (SubStation Alpha) that offer more formatting and styling options. WebVTT is another modern alternative designed specially for HTML5 video streaming services.


The ubiquity of SRT files stems from their ease of use, adaptability across platforms, and the ability to facilitate multilingual content dissemination. Despite the emergence of other formats, the SRT filetype remains a prominent choice for subtitling needs in the digital media landscape.

Supported converters for SRT files

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