Free online TTML to SRT converter

TTML (Timed Text Markup Language) is an XML-based subtitle and caption format used for timed text in media workflows, broadcasting, and streaming. SRT (SubRip Subtitle) is a simple, widely supported subtitle format that stores captions as numbered blocks with start and end times plus plain text.

Why convert ttml to srt

Converting TTML to SRT is useful when you need broader compatibility with video players, editors, and platforms that do not fully support TTML. SRT is easier to share, edit, and import into common tools.

Best software for conversion

The best choice depends on your workflow:

• Subtitle Edit — excellent free desktop software for opening TTML and saving as SRT.
• Aegisub — useful for subtitle editing, though TTML support may be more limited depending on version and plugins.
• FFmpeg — powerful command-line option for technical users and batch processing.
• Online converters — convenient for quick one-off conversions, but less ideal for sensitive files.

For most users, Subtitle Edit is the best balance of accuracy, ease of use, and format support.

How to convert ttml to srt in Subtitle Edit

1. Open Subtitle Edit.
2. Use File → Open to load the TTML file.
3. Check the subtitle timing and text for any formatting issues.
4. Choose File → Save as and select SubRip (*.srt).
5. Save the converted file.

How to convert ttml to srt with ffmpeg

If your TTML file is supported by your FFmpeg build, you can try a command-line conversion. FFmpeg is best for automation and batch jobs, but subtitle compatibility can vary by file structure.

ffmpeg -i input.ttml output.srt

If the result is not correct, use a subtitle editor to inspect the TTML structure and adjust the output manually.

Things to check after conversion

• Timing accuracy — make sure subtitle start and end times remain correct.
• Line breaks — SRT may handle line wrapping differently from TTML.
• Formatting loss — TTML styling such as colors, fonts, or positioning may not transfer to SRT.
• Encoding — save in UTF-8 if your subtitles contain special characters.

Tips for better results

• Use a tool that preserves subtitle timing precisely.
• Review the converted file in a subtitle player before publishing.
• If the TTML file contains complex styling, expect some formatting to be simplified in SRT.
• For large batches, automate conversion with a desktop tool or script.

Summary

TTML to SRT conversion is straightforward when you use the right tool. Subtitle Edit is the best overall option for most users, while FFmpeg is ideal for command-line workflows. After conversion, always verify timing, text, and encoding to ensure the subtitles display correctly.