GoLocalise
Subtitler timing Thai subtitles against video in GoLocalise's London studio

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.

Native-speaking subtitlers
SDH & closed captions
ISO 9001 & ISO 14001
Burnt-in or separate files
In-house subtitling team
Native-speaking subtitlers
SDH & closed captions
ISO 9001 & ISO 14001
Burnt-in or separate files
In-house subtitling team

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.

Get my subtitling quote
Our in-house subtitlers working on Thai files
GoLocalise subtitling and localisation team at work in the London studio
Inside our London studio — where our in-house subtitling team times, spots and quality-checks every file.

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 in

Subtitles 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

Switchable

A 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

Accessibility

Subtitling 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.

1

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.

2

Template and translation

Where needed we create an English subtitle template first, then send it to a native Thai subtitler.

3

Timing and quality checks

Subtitles are timed against the video and checked for reading speed, word segmentation, character rendering, and format compliance.

4

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.

35characters

Maximum per line

Tone marks and stacked vowels not counted

2lines

Maximum on screen

One line preferred where it fits

17chars/sec

Reading speed

Thirteen for children’s content

1second

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.

Try our free subtitle reading-speed (CPS) checker →

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

SRTVTTSSAASSSUB

Compatible with most platforms and players.

Broadcast & professional

STLTTMLDFXPCAPPAC

For broadcasters, post houses and streaming delivery specs.

Burnt-in video

MP4MOVProRes

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 goingWhat we deliver
YouTube, Vimeo & LMS platformsSRT or VTT closed captions
Netflix, Amazon & broadcastIMSC, TTML or EBU-STL to platform spec
Instagram, TikTok & paid socialBurned-in captions in MP4 (open captions)
Premiere, Final Cut & DaVinci ResolveSRT / 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

from £20 per minuteSee full subtitling rates →
Standard

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
Get a quote
Full production

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
Get a quote

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

We have used GoLocalise on a regular basis for projects in a number of languages. The service we receive is great. The team is always friendly and professional. The voiceovers we receive are of a very high quality and the turnaround is extremely quick. We are very happy to recommend GoLocalise to other businesses.
Jo SamuelAnimator at Pixel Circus
It was a pleasure to work with David and the team at GoLocalise. David gave me lots of help and advice, guiding me through my first subtitling project. He really knows his stuff! The experience was completely pain-free. I would not hesitate to recommend GoLocalise – outstanding work at a good price.
Kerry GilliesDirector at Synergy Language Services
They're reliable, adaptive and obsessed with quality. And while you can never be 100% guaranteed of perfection, you can be sure GoLocalise will go the extra mile to get it right every time. We've worked with them now for over 5 years and we are truly thankful to have such a strong localisation partner for our business.
Lucas ColeSales and Marketing Director at Epipheo

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

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
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Translation

  • 100+ languages covered
  • Tailored to your needs
  • Stringent quality control
  • Dedicated project managers
Learn more

Subtitling

  • Experienced subtitlers
  • Industry-standard software
  • Burn-in and graphic editing
  • Open and closed captions
Learn more

Transcription

  • Improve accessibility
  • Reach a wider audience
  • Boost SEO and video views
  • Maximise video engagement
Learn more
★★★★★5.0 · from 149 reviews · 24–48h