Is this SSA to SRT converter free?

Yes, completely free with no sign-up, no watermarks, and files up to 50 MB each. All processing happens in your browser.

Can this converter handle SSA files from old DVDs?

It reads text-based SSA files with the standard Dialogue field order expected by the parser. It does not extract subtitles from DVD images or parse non-standard field remapping.

What happens to SSA Comment lines?

Comment lines in the Events section are skipped. Only Dialogue lines are converted to SRT entries. In the DVD-era fansubbing community, Comment lines were used for translator notes and timing references, not for displayable subtitles.

Can I convert SSA to SRT on my phone?

Yes. The responsive page works in modern mobile browsers. Open the page, select your SSA file, and download the SRT file.

Does the converter handle SSA drawing commands?

Drawing and other rendering instructions inside override blocks are removed with the rest of the block. The SRT output contains the remaining dialogue text only.

What about SSA files with embedded fonts?

SSA scripts can reference fonts, but this converter does not preserve font information. SRT has no styling capability, so the subtitle text uses the defaults of the player displaying it.

Can I use the SRT output with Plex or Jellyfin?

Many media servers can detect SRT files placed alongside video files. Check your server's naming rules and subtitle settings.

How large can the SSA file be?

Each file can be up to 50 MB. SSA files from the DVD era are typically 10 to 200 KB. The converter handles up to 50 MB in browser memory.

Does the converter preserve line breaks?

SSA uses backslash-N for hard line breaks and backslash-n for soft line breaks within dialogue text. The converter converts both to standard SRT newlines, preserving the original line structure of each subtitle entry.

What players support the SRT output?

SRT is widely supported by desktop players, mobile apps, media servers, and editing tools, but exact support depends on the application and platform.

Can I embed the SRT into a video file?

Yes, tools such as MKVToolNix, FFmpeg, or HandBrake can embed SRT tracks in supported containers. Check the target container and application for supported subtitle features.

What is DirectVobSub and VSFilter?

DirectVobSub (also known as VSFilter) is a DirectShow filter that was used to render SSA subtitles on Windows from 1996 to approximately 2010. It interpreted SSA override codes for CRT monitor display. Modern players use libass instead, which is more accurate but may render legacy SSA files differently than intended.

Are SSA and SRT interchangeable?

No. SSA carries script structure and styling, while SRT carries numbered timing and plain text. Converting SSA to SRT removes the style layer and produces a simpler interchange format.

Can I batch convert multiple SSA files to SRT?

Yes. Drop several SSA files on this page and they open together in the workspace Batch tool with the SRT format pre-selected, converting every file at once. For converting whole folders at scale, use the Batch Converter page.

SSA to SRT Subtitle Converter

Bring DVD-era SSA subtitle files into the modern SRT era for universal device compatibility.

Drag & drop your SSA file here

or click to browse

Supports .ssa files up to 50 MB

Core Engine Architecture

Future-Proofing 1990s Subtitle Scripts

SubStation Alpha scripts carry styled dialogue in an [Events] section. This converter reads SSA Dialogue lines, strips override blocks, converts SSA timing to SRT timestamps, and writes a plain-text subtitle file for SRT-capable players. The conversion runs entirely in your browser.

Payload & Syntax Inspector

SSA to SRT Code Syntax & Structure Inspection

Side-by-side code inspection illustrating header definitions, timestamp syntax, and cue payload formatting

Millisecond Sync

input.ssa

SSA SOURCE

[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:01.00,0:00:04.00,Default,,0,0,0,,Hello, world!
Dialogue: 0,0:00:04.50,0:00:08.00,Default,,0,0,0,,This is a subtitle file.
Dialogue: 0,0:00:08.50,0:00:12.00,Default,,0,0,0,,Converted locally!

output.srt

SRT RESULT

1
00:00:01,000 --> 00:00:04,000
Hello, world!
 
2
00:00:04,500 --> 00:00:08,000
This is a subtitle file.
 
3
00:00:08,500 --> 00:00:12,000
Converted locally!

Specification Sheet

SSA vs SRT Technical Specifications

Standard Compliant

Input Format

SSA

SSA v4 (SubStation Alpha) is a subtitle script format with [Script Info], [V4 Styles], and [Events] sections. Dialogue lines use comma-delimited fields with possible inline override codes in curly braces. Timing is in centiseconds (H:MM:SS.cc). This converter reads UTF-8 input and can fall back to GB18030.

Output Format

SRT

SRT (SubRip) is a widely supported plain-text subtitle format. Each entry has a sequential number, a comma-separated timestamp pair with millisecond precision (00:01:30,500 --> 00:01:35,000), and plain text.

Format Differences

SSA is a styled script format. SRT is a widely used plain-text subtitle format.

SSA timing uses centiseconds (0:00:15.20). SRT timing uses milliseconds (00:00:15,200) with comma separators.

SSA override codes in curly braces are CRT-era formatting instructions. SRT has no inline formatting.

SSA V4 Styles section defines fonts and colors. SRT has no style system.

This SSA reader supports UTF-8 and GB18030 fallback. SRT output uses UTF-8.

SSA carries script structure and styling, while SRT focuses on numbered cues, timing, and text.

Conversion Troubleshooting & Gotchas

Practical solutions for player compatibility, character encoding, and timing synchronization

4 Common Gotchas

GOTCHA #1

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.

GOTCHA #2

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.

GOTCHA #3

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.

GOTCHA #4

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

Reads Start, End, and Text fields from SSA Dialogue lines

Strips override blocks from the dialogue text

Ignores SSA script metadata and style definitions

Converts SSA centisecond timing (0:01:30.50) to modern SRT millisecond timing (00:01:30,500)

Reads UTF-8 input and falls back to GB18030 when possible

Discards V4 Styles section with CRT monitor font definitions and color settings

Normalizes SSA line break codes to standard SRT newlines

Skips SSA Comment lines that contain original subtitler production notes

Why Convert?

Many common players and media servers support SRT more consistently than SSA.

Plain SRT text avoids exposing SSA override codes in players without SSA rendering support.

Video tools that accept SRT can use the converted timing and dialogue without the SSA style layer.

Removing style definitions and metadata often reduces file size.

SRT is a common interchange format for captioning and accessibility workflows.

Scenarios

Common Use Cases

DVD Collection Digitization

Convert text-based SSA subtitle exports to SRT for playback in SRT-capable apps and devices.

Legacy Fansub Archive Migration

Convert legacy text-based SSA dialogue to SRT for SRT-first playback workflows.

Video Editing Pipeline Integration

Create an SRT interchange file for video tools that import SRT subtitles.

Media Server Compatibility

Create plain SRT sidecars for media servers that index SRT subtitle files.

Mobile Video Playback

Convert SSA dialogue to plain SRT for mobile players that support SRT subtitles.

Format Ecosystem

Related Formats

ASS

Advanced SubStation Alpha is the 2003 successor to SSA. If your file is ASS v4+, the conversion process is the same since both share the Dialogue structure.

VTT

WebVTT is for web video. Convert SSA to VTT if you need browser-compatible subtitles for HTML5 video.

TXT

Plain text strips all timing. Convert SSA to TXT if you only need dialogue text without timestamps for archival or translation.

How It Works

1
Upload your .ssa file by dragging it or browsing.
2
The parser enters the [Events] section and reads Dialogue lines.
3
Each Dialogue line is split into its expected Start, End, and Text fields.
4
Override blocks are stripped from the text.
5
SSA centisecond timestamps are converted to SRT millisecond timestamps.
6
Sequential entry numbers are assigned to each cleaned subtitle entry.
7
The SRT output is encoded as UTF-8 and ready for modern playback devices.

moreTools.fromFormat

SSA VTT SSA ASS SSA LRC SSA TXT SSA TTML SSA SCC SSA STL SSA SMI

moreTools.toFormat

VTT SRT ASS SRT LRC SRT JSON SRT SBV SRT TTML SRT SCC SRT STL SRT

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Frequently Asked Questions

SSA v4 (SubStation Alpha) is a styled subtitle script format using [Script Info], [V4 Styles], and [Events] sections. Dialogue lines carry timing and text, while override codes in curly braces can control rendering details such as font size, color, and positioning.

SSA is the earlier SubStation Alpha script format, while ASS is its Advanced SubStation Alpha successor with additional style and override capabilities. Both use similar Events and Dialogue structures, but this page accepts .ssa files.

All override blocks in curly braces are removed. The remaining dialogue text is kept, except that SSA line-break codes become standard newlines.

Some players do not render SSA styling or may show unsupported override codes as text. Converting to SRT removes override blocks and produces plain text, which many SRT-capable players can display directly.

SSA v4 uses H:MM:SS.cc format where cc is centiseconds (0-99). SRT uses HH:MM:SS,mmm where mmm is milliseconds (0-999). The converter multiplies centiseconds by 10. For example, 0:01:25.40 becomes 00:01:25,400 in SRT. Hours are zero-padded to two digits for SRT format compliance.

The reader expects UTF-8 and can fall back to GB18030 for many Chinese-encoded files. Other legacy encodings may not be decoded correctly; convert those files to UTF-8 with a suitable editor before uploading.

Ready to convert your subtitles?

Drop your SSA file here and convert to SRT instantly.

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Related Resources

What is SSA?What is SRT?ASS vs SSA SRT vs ASS SRT vs LRC SRT vs SBV