Keep the spoken form
For vlogs, interviews, comedy, reactions and short-form video. It matches the speaker, keeps their voice, and the automatic draft is already close.
Tamil subtitle generator
Tamil subtitles in the right register.
Generate an editable Tamil caption track, decide whether the video wants spoken or formal written Tamil, then review and export a subtitle file or a captioned video.
Tamil asks a question most languages do not
Written Tamil and spoken Tamil are not simply formal and casual versions of the same thing. They differ far enough that choosing between them is a genuine decision, closer to a translation choice than a question of tone.
That matters for captions because automatic transcription answers the question for you, and it always answers the same way. It reports what was said, which is the spoken form. For a vlog, an interview, a comedy clip or anything conversational, that is exactly right, and the draft needs almost no register work at all.
For an educational video, a corporate explainer, an official announcement or a news segment, it is wrong throughout. Not wrong in a few places you can spot and patch, but in the wrong register from the first line to the last, because the speech itself was informal and the writing is expected not to be.
Choosing a register
Move to written Tamil
For educational, corporate, official and news content. Budget an editing pass, because this is a rewrite of the wording rather than a setting to switch.
Whichever you pick, do not drift
The most common fault in Tamil captions is not choosing the wrong register. It is starting in one and sliding into the other, which usually happens when someone formalises the opening lines and then loses patience with the rest of the file.
Tamil readers notice that switch immediately, even when every individual line is correct on its own. So decide before you start editing, not while you are editing, and read the file end to end once with only that question in mind.
Nothing technical changes between the two. Both use the same Tamil script, so there is no font, encoding or rendering difference to worry about. This is purely a wording decision, which is why it belongs in the review pass and not in the export settings.
The rest of the review
Names of people, places and channels come first, as always, because those are what viewers write in to correct. Then English words spoken inside Tamil sentences, which are constant in conversational Tamil and usually belong exactly as they were said rather than rendered into Tamil script.
Then line length. Tamil words run long, so a line that sits comfortably in English can overflow a vertical frame. The subtitle validator reports which cues exceed the limit and how fast each one reads, and the subtitle line breaker re-breaks them without moving the timing.
Publishing the track
YouTube accepts a subtitle track per language, so a Tamil track can sit alongside others on one upload, and the subtitle track upload guide covers the path and the UTF-8 requirement. Short-form feeds accept no subtitle file, so those need the captions rendered into the picture, as the delivery guide explains.
For other South Asian languages, see the Bengali subtitle generator, the Hinglish caption generator, and the Urdu subtitle generator.
Tamil subtitle questions
Should Tamil subtitles use spoken or formal written Tamil?
It depends on the video. Spoken Tamil suits vlogs, interviews, comedy and anything conversational, because it matches what the speaker actually said. Formal written Tamil suits educational, corporate, official and news content, where the audience expects the written register. The two are far enough apart that this is a real decision rather than a stylistic preference.
Which one will an automatic draft give me?
Broadly the spoken form, because transcription reports what was said. For conversational video that is usually what you want and the draft needs little register work. For formal video it means the draft is in the wrong register throughout, and converting it is an editing pass rather than a setting you can toggle.
Why does mixing the two registers look wrong?
Because Tamil readers notice the switch immediately. A file that opens in formal written Tamil and drifts into colloquial forms halfway through reads as careless even when every individual line is correct. Pick a register at the start and hold it for the whole video.
Does the script change between registers?
No. Both are written in the same Tamil script, so there is no font, encoding or rendering difference between them. The decision is purely about wording, which makes it an editorial question rather than a technical one.
What else should I review in a Tamil caption draft?
Names of people, places and channels first. Then English words spoken inside Tamil sentences, which are common in conversational speech and usually belong as they were said. Then line length, because Tamil words run long and a comfortable English line can overflow a vertical frame.
What can I export?
Reviewed Tamil captions export as SRT or VTT subtitle files, plain text, or a captioned video. Keep the subtitle file even when you ship a captioned video, since it is the version you can still correct. Open the caption generator.
Start a Tamil caption track
Transcribe the video, decide the register, review the names and the line length, then export.