Convert TXT to SRT: Add Timestamps Step by Step – India

The single trickiest part of subtitling is timing – getting each caption to appear and disappear exactly when it should. A TXT file gives you the words; adding accurate timestamps turns it into a working SRT. This step-by-step guide shows Indian creators exactly how the timing works, so whether you use a converter or fine-tune by hand, your captions land perfectly on cue. Let us convert TXT to SRT with correct timing.

Key takeaway: Timing is about reading speed. If a caption appears and vanishes faster than a viewer can read it, it fails – even if the words are perfect.

Understanding the SRT Timestamp Format

An SRT timestamp looks like this: 00:00:01,000 followed by an arrow and 00:00:04,000. The parts are hours, minutes, seconds and milliseconds, and crucially a comma separates the seconds from the milliseconds, not a full stop. Each caption has a start time (when it appears) and an end time (when it disappears). Getting this format exactly right is essential, because players are strict and a single stray character can break a caption block.

Step-by-Step: From TXT to Timed SRT

1. Clean the transcript. Remove filler words, stutters and speaker labels that should not appear on screen.
2. Split into caption lines. Break the text at natural pauses so each caption is one or two short lines, ideally under 42 characters per line.
3. Number the blocks. Start at 1 and increment for each caption.
4. Assign start and end times. Give each caption enough on-screen time for the viewer to read it comfortably.
5. Add the blank line. Separate each block with an empty line so players parse them correctly.
6. Review against the video. Play it back and nudge any caption that appears too early or lingers too long.

A converter does steps two to five automatically, and then a subtitle sync tool helps you shift timings if the whole track drifts.

How Long Should Each Caption Stay On Screen?

A good rule is to target a reading speed of about 15 to 17 characters per second for general audiences, and slower for educational or regional-language content where viewers may be reading in a second language. A very short caption still needs a minimum of around one second on screen, and no caption should linger much beyond six seconds. Balancing these limits keeps captions readable without feeling rushed or sluggish.

Worked Examples

Example 1 – Fast dialogue. A comedy sketch from a Delhi creator has rapid back-and-forth lines. The editor splits each speaker turn into its own short caption so viewers can keep up, rather than cramming two speakers into one block.

Example 2 – Slow tutorial. A Kannada gardening tutorial has long, calm narration. The captions are given generous on-screen time and split at sentence ends, matching the relaxed pace.

Example 3 – Music segment. During a song, the creator times captions to the vocal lines, leaving instrumental gaps blank so the captions align with what is actually sung.

Benefits of Getting Timing Right

Well-timed captions dramatically improve the viewing experience and watch-through, because viewers are neither straining to read nor distracted by text that lingers. Accurate timing is also a professional signal – it is the difference between captions that feel like part of the production and captions that feel bolted on. For accessibility, correct timing ensures deaf and hard-of-hearing viewers experience the video as intended, which is the whole point of India’s accessibility guidelines.

Challenges and Limitations

Manual timing is painstaking for long videos, which is why converters are so useful as a first pass. Even so, automatic timing assumes even pacing and will drift on content with pauses, music or overlapping speech. Multilingual projects multiply the work, since each language needs its own timed file. And frame-accurate timing for broadcast can require specialised software beyond a simple converter.

Common Mistakes to Avoid

• Using a full stop before milliseconds. SRT requires a comma, as in 00:00:02,500.
• Captions that flash by. Give viewers at least a second, more for longer lines.
• Overlapping timestamps. One caption should end before or as the next begins.
• Splitting mid-phrase. Break at natural pauses, not in the middle of a clause.
• Forgetting the blank line. Missing separators can break the whole file.
• Never checking on the video. Always do a playback review.

Best Practices and Expert Recommendations

• Target 15-17 characters per second reading speed, slower for second-language audiences.
• Split at natural pauses so captions read as complete thoughts.
• Keep a minimum and maximum duration – roughly one to six seconds per caption.
• Use a converter for the first pass, then fine-tune the tricky sections.
• Sync-check the full track to catch cumulative drift.
• Save the timed master so translations can reuse the timing.

Conclusion

Adding timestamps is what transforms a plain transcript into captions that actually work on screen. Understand the HH:MM:SS,mmm format, split text at natural pauses, respect reading speed, and always review against the video. A converter handles the heavy lifting of turning TXT into SRT, and a quick sync check ensures your Indian audience – in any language – can read every line comfortably.

Frequently Asked Questions

What format do SRT timestamps use?
They use HH:MM:SS,mmm with a comma before the milliseconds, and each caption has a start time and an end time joined by an arrow, for example 00:00:01,000 to 00:00:04,000.

How long should a subtitle stay on screen?
Long enough to read comfortably – roughly one to six seconds depending on length, targeting about 15 to 17 characters per second, and slower for second-language viewers.

Can a converter set the timing automatically?
Yes, based on a default duration or reading speed. It is a strong first pass, but you should review the result against the actual video.

Why is my SRT not displaying?
Common causes are a missing blank line between blocks, a full stop instead of a comma in the timestamp, or overlapping times. Fix these and the captions should appear.

Do I need separate timing for each language?
The timing can often be reused across languages, but each language needs its own SRT file with its translated text placed on the same time codes.