Thai subtitle generator

So every subtitle is written in Thai script. When the language is guessed, a short or noisy stretch can be taken for another language, and a run of subtitles in the wrong script is no use to Thai viewers. Set to Thai, the whole video comes back in Thai.

Speakers who switch to English for whole passages are better served by the main subtitle generator, which detects the language of each passage. English terms inside Thai, such as “pH” or “FBI”, stay in Latin letters on this page too.

With your browser’s Thai word dictionary, which finds where one word ends and the next begins, so a line never splits a word in the middle. Thai also puts spaces between phrases, and a line can break there too; 51 of our 183 test lines contained one.

Compounds are worth a look, because the dictionary sometimes divides them into their parts: in our test “แปลกใจ” broke as แปลก / ใจ and “ถูกทอดทิ้ง” ran over two subtitles. Move the second part back in a text editor; the timing is unaffected.

Because Thai doesn’t use them: a space separates sentences, and Netflix’s Thai guide also leaves out question marks and dashes. Our 40 test clips held one comma and no full stops, so subtitles end where the speaker pauses or the line fills, not at punctuation.

Numbers came back in Arabic digits, as in “ในทศวรรษที่ 1920” and “2,500 บาท”. The same guide writes one to ten in Thai words and marks each of two speakers with a hyphen and a space, which you add yourself: the generator writes the words alone.

Thai is one of the languages NoteOwl understands on a Mac. It transcribes Thai recordings there with unlimited transcription, keeps each speaker apart and saves SRT subtitles with their names, using on-device AI models. For a Thai transcript instead, use Thai audio to text.