STL to LRC Subtitle Converter
Transform Spruce Subtitle text into line-level LRC privately in your browser.
Drag & drop your STL file here
or click to browse
Supports .stl files up to 50 MB
Free Online STL to LRC Converter
Our STL to LRC converter reads Spruce Subtitle text input and writes line-level LRC entirely in your browser. Source STL timing is converted to [mm:ss.xx] tags. Bracketed inline tags are removed, STL end times are discarded, and pipe separators become untagged continuation lines. The conversion runs client-side, so your subtitle files are never uploaded to a server.
STL to LRC Code Syntax & Structure Inspection
Side-by-side code inspection illustrating header definitions, timestamp syntax, and cue payload formatting
STL vs LRC Technical Specifications
STL
STL (Spruce Subtitle) is a text-based subtitle format used in DVD authoring and some broadcast workflows. Each entry uses comma-separated start and end timecodes followed by the subtitle text, with the pipe character (|) denoting line breaks. This text STL variant is distinct from the binary EBU STL broadcast format.
LRC
LRC (Lyrics) is a timestamped lyrics format for music players and karaoke apps. Each lyric line is prefixed with a [mm:ss.xx] timestamp. LRC has no end times (a line ends when the next begins) and no styling, making it ideal for synced song lyrics rather than film subtitles.
Format Differences
Conversion Troubleshooting & Gotchas
Practical solutions for player compatibility, character encoding, and timing synchronization
Subtitle timing drifts or appears out of sync on media players
Video files frequently differ in framerate (e.g., 23.976 fps vs 25 fps). If the timing drifts steadily, use our Subtitle Sync tool to adjust the global offset or framerate stretch.
Characters appear as garbled symbols or question marks (Mojibake)
Legacy files saved in Windows-1252, Shift-JIS, or GBK may render incorrectly. Our exporter standardizes output to clean UTF-8. Use our Subtitle Encoding Converter if the source file is corrupted.
Overlapping captions when multiple speakers talk simultaneously
Different formats handle overlapping dialogue differently. If your target player cannot render stacked cues cleanly, open the file in our Subtitle Editor to adjust individual cue timings.
Video editing software (Premiere, DaVinci, Final Cut) rejects the file
Professional NLE software enforces strict syntax rules. Our converter eliminates malformed line breaks and non-standard tags, producing clean, standardized files.
Features
Why Convert?
Common Use Cases
Synced Lyrics
Turn timed subtitles into LRC lyric files for music players that display synced song lyrics.
Karaoke
Produce LRC files for karaoke applications that read line-synced lyrics.
Music Apps
Generate LRC for lyric-capable music players that support the format.
Related Formats
SRT (SubRip)
The universal plain-text alternative: convert to SRT for maximum device compatibility.
VTT (WebVTT)
The web alternative: convert to VTT if your target is HTML5 video or YouTube.
TXT (Plain Text)
The transcript alternative: convert to TXT for a clean plain-text transcript.
How It Works
- 1
Upload your .stl file by dragging it in or browsing.
- 2
The parser reads the Spruce Subtitle structure and extracts each cue's start, end, and text.
- 3
Source STL timing (SMPTE HH:MM:SS:FF frame timecodes) is converted to LRC timing ([mm:ss.xx] minute-second-centisecond).
- 4
Bracketed inline tags are removed, and pipe separators become newlines.
- 5
The output .lrc file is generated and ready to download.
More Subtitle Tools
Frequently Asked Questions
It reads a Spruce Subtitle text file, removes bracketed inline tags, discards end times, and writes line-level [mm:ss.xx] LRC tags followed by text.
Absolutely. Every conversion runs client-side in your browser. No subtitle data, file contents, or metadata is ever transmitted to a server.
Yes. Bracketed inline tags are removed, end times are discarded, and pipe separators become untagged continuation lines. LRC timing is truncated to centiseconds.
Yes, completely free with no sign-up, no watermarks, and files up to 50 MB each. All processing happens in your browser, so your files are never uploaded to a server.
Source STL timing (SMPTE HH:MM:SS:FF frame timecodes) is converted to LRC timing ([mm:ss.xx] minute-second-centisecond).
Yes. The responsive page works in modern mobile browsers.
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