Convert ASS to SUB
Transform Advanced SubStation Alpha (.ass) subtitle files to MicroDVD (.sub) format
Drop your ASS (Advanced SubStation Alpha) file here or click to browse
Supported: .ass files (max 10MB)
Why Convert ASS to SUB?
Converting from Advanced SubStation Alpha to MicroDVD gives you access to SUB's unique features and capabilities. Frame-based subtitle format popular with DivX and older video files
Uses frame numbers instead of timestamps for precise synchronization.
Native support in DivX players and classic video formats.
Straightforward format that's easy to parse and generate.
Minimal overhead for efficient storage and transmission.
Common Use Cases
- DivX videos - Add subtitles to DivX and classic video formats
- Classic media - Work with older video collections and formats
- Frame-accurate timing - Precise subtitle sync for video editing
- Retro compatibility - Support legacy video players and systems
ASS vs SUB: Key Differences
| Feature | ASS | SUB |
|---|---|---|
| Format Type | Script-based | Frame-based |
| Time Format | H:MM:SS.cc | Frame numbers |
| Header | Script Info + Styles | None |
| Styling | Advanced | Minimal |
| Positioning | Full screen control | Bottom center |
| File Size | Large | Small |
| Compatibility | Desktop players | DivX players |
How the Conversion Works
Our ASS to SUB converter automatically handles all the technical differences between formats:
- Parses ASS file structure and extracts subtitle data
- Converts time codes from ASS to SUB format
- Converts timestamps to frame numbers based on framerate
- Preserves all subtitle text and timing information
- Maintains proper character encoding (UTF-8)
- Generates valid SUB file ready for use
Need the reverse?
Convert MicroDVD files back to Advanced SubStation Alpha format
Convert SUB to ASS →Other Popular Conversions
Need a different format?
We support conversion between all major subtitle formats
View All Subtitle Converters →