
Subtitling · Thai
Thai subtitling services
Native Thai subtitlers for corporate video, eLearning, streaming content, documentary, and advertising. Delivered correctly rendered, in the format your platform needs. Part of a full Thai language service: subtitles, voice over scripts, and translation of any content you need.
About Thai subtitling
Thai subtitles that break where the words do
Thai is written without spaces between words. Spaces appear, but they mark the end of a phrase or sentence rather than the boundary between one word and the next, which means there is no simple signal telling software where a line can safely break.
In Thai subtitling, tools that wrap text on character count split words in the middle, producing lines that a reader has to stop and reassemble. Correct segmentation depends on knowing where the words actually are, which is a linguistic judgement rather than a mechanical one.
At GoLocalise, we work with native Thai subtitlers and confirm that files render and break correctly in the target environment.


Which do you need?
Open captions, closed captions or SDH
Three different deliverables that people often ask for by the wrong name. Here is the short version.
Open captions
Burnt inSubtitles burnt permanently into the picture. Nobody can switch them off, which is exactly what you want for social feeds that autoplay muted — and it fixes the line breaks and the stacked marks at delivery.
- Always visible
- Breaks and tone marks fixed at delivery
- Delivered as a finished video file
Closed captions
SwitchableA separate file the viewer can turn on and off, and that can carry several languages at once. The standard for YouTube, Vimeo and the streaming platforms.
- Viewer controls them
- Multiple languages from one video
- Indexed by search engines
SDH
AccessibilitySubtitling for the deaf and hard of hearing: dialogue plus speaker IDs and the sound effects and music cues that carry meaning.
- Speaker identification
- Non-dialogue audio described
- Meets accessibility requirements
Subtitles or captions? The two terms are often used interchangeably. Strictly, subtitles translate the dialogue for viewers who can hear the audio, while captions are same-language and add speaker labels and sound cues for viewers who cannot. We produce either — translated Thai subtitles or same-language Thai captions and SDH — in whichever form your platform and audience require.
What we subtitle
Thai subtitling for every kind of content
Thai subtitling runs from OTT and film to corporate and social, each shaped by Thai's spaceless script and line-breaking rules. These are the formats we subtitle most.
Corporate & training video
Internal comms, onboarding and product training subtitled for global teams and LMS delivery.
eLearning & online courses
Timed, readable subtitles for course platforms, MOOCs and instructional video.
Documentary & factual
Festival, broadcast and streaming documentaries, including interview clean-up and on-screen text.
Advertising & social
Burnt-in captions for muted autoplay on Instagram, TikTok, YouTube and paid social.
Streaming & OTT
Platform-spec subtitle and caption files for VOD, OTT and broadcast delivery.
Accessibility (SDH & closed captions)
Same-language SDH and closed captions to meet WCAG and accessibility requirements.
Events, webinars & conferences
Recorded talks, town halls and webinars captioned for on-demand viewing.
E-commerce & product video
Short product and explainer videos captioned to lift conversion and reach.
How can we help you?
Your project manager has everything covered
One point of contact from brief to delivery, and both a linguistic and a technical check on every file.
Brief review
We review your video, your audience and the player — and, because Thai is written without spaces, where the lines are allowed to break.
Template and translation
Where needed we create an English subtitle template first, then send it to a native Thai subtitler.
Timing and quality checks
Subtitles are timed against the video and checked for reading speed, word segmentation, character rendering, and format compliance.
Delivery and display check
Files are delivered in the format you need, confirmed to display and break correctly.
Our standards
The specs we work to
Readable subtitles are a matter of measurable limits, not opinion. These are the defaults we apply to Thai unless your style guide says otherwise.
Maximum per line
Tone marks and stacked vowels not counted
Maximum on screen
One line preferred where it fits
Reading speed
Thirteen for children’s content
Minimum duration
Seven seconds maximum
Thai tone marks and vowel signs stack above and below the consonant line. In subtitle boxes with tight line spacing, those stacked marks get clipped, and files that look correct in an editor can lose them in the player. So the line limits above are a starting point, not the whole job: the break points are decided by a subtitler who can see where the words are.
Deliverables
Professional subtitle formats
We adapt your existing translations into subtitle format or create subtitles from scratch, in Thai, English or any other language. And if the project needs a timed script or a plain document instead, we deliver that too.
Standard text-based
Compatible with most platforms and players.
Broadcast & professional
For broadcasters, post houses and streaming delivery specs.
Burnt-in video
A finished file with the subtitles baked into the picture, tone marks intact.
Need a different format? Convert SRT, VTT and more with our free subtitle converter →
| Where it's going | What we deliver |
|---|---|
| YouTube, Vimeo & LMS platforms | SRT or VTT closed captions |
| Netflix, Amazon & broadcast | IMSC, TTML or EBU-STL to platform spec |
| Instagram, TikTok & paid social | Burned-in captions in MP4 (open captions) |
| Premiere, Final Cut & DaVinci Resolve | SRT / VTT that import straight into your edit |
Not sure which you need? Tell us the destination platform and we deliver to its exact spec.
Thai specifics
No capitals, and no shortcut to the line break
Thai has no capital letters, so emphasis conventions borrowed from English subtitling do not transfer. What reads as emphasis in an English file has to be achieved another way here, and that is a decision the subtitler makes rather than a formatting switch.
It is also why automatic tools struggle. Word segmentation is the core difficulty, and it affects both recognition and line breaking, so errors compound at two separate stages rather than one.
Add the rendering issues with stacked marks and the output usually needs rebuilding rather than correcting. Every file we deliver is produced and checked by a native Thai subtitler.
Since 2008
Subtitling & captioning
100+
Languages covered
ISO 9001 & 14001
Certified processes
24–48h
Typical turnaround
Subtitling rates
Professional Thai subtitling
For single videos and straightforward content where accurate, well-timed subtitles are what you need.
- Native Thai subtitler
- Word segmentation by a linguist
- Frame-accurate timing
For longer content and recurring projects, including transcription, SDH, burned-in subtitles and multiple output formats.
- Everything in Standard
- Transcription and template
- SDH and burnt-in
- Multiple output formats
Every project is quoted individually and backed by our Price Match Promise. Send us your video for an exact, no-obligation quote.
Not sure what your Thai subtitles will cost?
Send us the video — or just its running time — and we come back with an itemised quote: running time, languages and output formats priced line by line, with nothing hidden. No obligation, and if you find a like-for-like price lower, we will match it.
- Free, itemised quote
- No obligation
- Price Match Promise
Trusted by global brands
Subtitling we've delivered
Have we done something like yours?
Return of the Goat II
Subtitling · European French — a different language from yours, shown because the process is the same
Related services
The rest of your Thai project
Thai voice over
Native Thai voice actors, recorded in broadcast-quality studios.
Learn moreThai translation
No spaces between words, so the line breaks are a decision.
Learn moreAll subtitling services
Our full subtitling and captioning offer across 100+ languages.
Learn moreThai transcription
Royal and monastic vocabulary matched to the subject.
Learn moreSubtitling & captioning in more languages
Native subtitlers for corporate video, eLearning, streaming, documentary and advertising. Browse another language, or ask us about yours.
Subtitling we have delivered
Real projects, real deadlines, and the files that went live.

Subtitling · European French
Return of the Goat II
Elevating cycling narratives with multilingual subtitling.

Subtitling · Indonesian
Pathways: Hope After Suicide Loss
Bridging cultures through subtitling: a journey of hope.

Subtitling · English
‘Todos a la Cocina’ Cooking Show
Enhancing global reach through expert subtitling.
Most common questions
Why do my Thai subtitles break words in the wrong place?
Because Thai is written without spaces between words, so software wrapping text on character count has nothing to guide it and splits wherever the line runs out. Knowing where a break is acceptable requires knowing where the words are, which is why Thai line breaking is done by a native subtitler rather than left to the tool.
Can automatic tools generate Thai subtitles?
Not reliably. Word segmentation is the core difficulty, and it affects both recognition and line breaking, so errors compound at two separate stages. Add the rendering issues with stacked marks and the output usually needs rebuilding rather than correcting. Every file we deliver is produced and checked by a native Thai subtitler.
How quickly can a Thai subtitling project be delivered?
Expect 24 to 48 hours on a short video. What changes it is whether we transcribe the Thai audio before we translate, how many output formats you need, and running time. Your project manager confirms the date before we start.
How much does Thai subtitling cost?
Thai subtitling is billed per minute of finished video. Thai runs without spaces between words, so line-breaking has to follow the language's own segmentation rather than a character count — that expertise, plus running time, transcription, SDH or burned-in output and formats, shapes the cost. Every project is priced individually, backed by the Price Match Promise.
Do you also add same-language Thai captions, not just translated subtitles?
Yes. As well as translating into Thai, we produce same-language Thai captions and SDH — the closed captioning teams need for accessibility and muted social. If your video is already in Thai and you just want accurate on-screen captions, that is core to our Thai captioning service.
Can you start from a Thai SRT file we already have?
Certainly. With a transcript or SRT in hand we spot and time from it, breaking Thai lines at natural word boundaries rather than mid-word. Otherwise we transcribe the Thai audio first. Every file goes through the same linguistic and technical QA.
Which editing software do your Thai subtitle files import into?
The standard set, and the awkward ones: SRT, VTT, STL and TTML that carry Thai script and correct line-breaking into Adobe Premiere Pro, Final Cut Pro, DaVinci Resolve and the major online players — or burnt into the picture as a finished MP4/MOV so the text always displays correctly.
Can you burn Thai subtitles into the video or deliver them as a separate file?
Both. We can hardcode open captions into the video with the Thai font rendered correctly, or deliver a separate SRT/VTT sidecar you can toggle — tell us which your platform needs.
What do you need from us to quote Thai subtitling?
Less than people expect: the video, or a link to it, its running time, which platform or broadcaster it is going to, and the date you need it by. A rough cut is fine — we would rather quote on what exists than wait for picture lock and lose a week of your schedule. A named project manager comes back with an itemised quote, normally within four working hours.
How quickly will we hear back, and who will we be dealing with?
More than half of enquiries get a reply within thirty minutes during office hours (Monday to Friday, 9am to 6pm UK time), and the itemised quote normally follows within four working hours. After that you have one dedicated project manager who owns the job from brief to final file — not a ticket queue, and not a different name on every email. If it is easier, call +44 207 095 5730 and ask for them by name.
We are still pitching and the budget is not signed off. Can we still get a Thai quote?
Yes, and it is one of the commonest reasons people get in touch. Tell us it is for a pitch and you get a figure you can put in front of your own client, itemised so it stands up to being picked apart, with no obligation and no follow-up sales calls if the pitch goes elsewhere. If it lands, the quote still holds and we already know the project.
What if we find a cheaper Thai quote somewhere else?
Send it over. Our Price Match Promise covers like-for-like work, and because our quotes are itemised you can see exactly what is being compared — which is usually where the gap turns out to be, in a revision pass, a licence or a delivery format that the cheaper figure quietly left out. If it really is the same work for less, we match it.
Ready to subtitle your video in Thai?
Send us your video and we'll come back with an exact, itemised quote.
The complete solution to localise your content
Voice over
- State-of-the-art studios
- Neumann microphones
- On-hand sound engineers
- 1,000+ voice actors
Translation
- 100+ languages covered
- Tailored to your needs
- Stringent quality control
- Dedicated project managers
Subtitling
- Experienced subtitlers
- Industry-standard software
- Burn-in and graphic editing
- Open and closed captions
Transcription
- Improve accessibility
- Reach a wider audience
- Boost SEO and video views
- Maximise video engagement



