subtitle Format

SRT File Format

SubRip Subtitle is the world’s most widely supported subtitle format. It consists of sequential counter numbers, millisecond timecodes, and plain text dialogue lines.

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Technical Specifications

Extensions	.srt
MIME Types	application/x-subrip, text/srt
Category	Subtitle
Engine Tier	tier1-small-js
Magic Bytes / Sniffing	Container sniffing (ZIP / OLE2 / RIFF header inspection)
Opens With	VLC, YouTube, smart TVs, video editors
Good For	Universal video subtitles, YouTube caption uploads, and offline movies.
Not Recommended For	Stylized karaoke animations and advanced text positioning.

Convert from SRT (6 targets)

SRTVTT(exact)SRTASS(high)SRTSBV(exact)SRTSUB(good)SRTLRC(good)SRTSSA(high)

Convert to SRT (6 sources)

VTTSRT(exact)ASSSRT(good)SBVSRT(exact)SSASRT(good)SUBSRT(good)LRCSRT(good)