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

Subtitling · Khmer

Khmer subtitling services

Native Khmer linguists subtitling training film, eLearning, factual and campaign video for Cambodia. We size the caption box for a script that builds downwards before a single cue is spotted. Khmer subtitles, voice over scripts and translation all sit inside one project.

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 Khmer subtitling

The script in our catalogue that needs the tallest line

Khmer assembles a syllable in layers. A base consonant can carry one or two more written underneath it, attached by an invisible character called coeng, and a vowel sign can sit in front of the base, after it, above it or below it. One written unit can therefore occupy four or five vertical levels where a Latin letter occupies one.

Nothing about that changes the character count, which is why it gets missed. It changes the height of the box. Give two Khmer lines the leading a player applies to Latin text and the subscripts of the upper line arrive in the vowel signs of the lower one, and a font that squeezes the whole stack into Latin vertical metrics renders it too small to read at subtitle size.

At GoLocalise, we work with native Khmer subtitlers, set the line spacing before anything is timed rather than after somebody complains, and look at both lines at the size the platform will draw them. Khmer runs its words together without spaces, so breaks are placed by a reader rather than a counter.

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Our in-house subtitlers working on Khmer 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 in Khmer it fixes the line spacing at delivery, with nothing left for the player to decide.

  • Always visible
  • Line spacing 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 Khmer subtitles or same-language Khmer captions and SDH — in whichever form your platform and audience require.

What we subtitle

Khmer subtitling for every kind of content

Development and public health programmes, manufacturers running plants outside Phnom Penh, and streamers building a local catalogue: that is where most Khmer briefs come from. The formats below are the ones we see repeatedly.

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

Video, audience and playback environment, starting with how much vertical room the caption area gives a line and whether that room can be changed at all.

2

Template and translation

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

3

Timing and quality checks

Cues spotted to picture, then read for pace and length, with every coeng stack confirmed to clear the line beneath it and the output checked against your spec.

4

Delivery and display check

Your formats, handed over after both lines have been read back at the spacing the platform actually applies.

Our standards

The specs we work to

Readable subtitles are a matter of measurable limits, not opinion. These are the defaults we apply to Khmer unless your style guide says otherwise.

42characters

Maximum per line

House figure, pending Khmer validation

2lines

Maximum on screen

Leading raised for stacked clusters

17chars/sec

Reading speed

13 for children's programming

1second

Minimum duration

Seven seconds at the far end

Treat all four as house defaults still waiting to be validated against Khmer: nobody has published a Khmer subtitling guide, so if your own spec sets different limits, follow yours. And note what is missing from the table. The measurement that decides a Khmer cue is line spacing, which no style sheet prints, and a Latin-derived value for it is too small here.

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 Khmer, 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, spacing included.

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.

Khmer specifics

Why one Khmer line often beats two

Around 19 million people speak Khmer as a first language. It is the national language of Cambodia and a recognised minority language in eastern Thailand and in the Mekong provinces of Vietnam, so a single file frequently has to serve viewers on three sides of a border who share the script and the standard written form.

The vertical cost has a practical consequence that shapes how we write. Because a second line is expensive in a way it is not in Latin script, a Khmer subtitle earns its second line rather than taking it by default — we condense into one where the dialogue allows it, and reserve the pair for cues that genuinely carry two beats.

The other half is the font. The Khmer range is widely covered now, but coverage and vertical metrics are separate questions: a face can contain every character and still declare an ascent and descent borrowed from Latin design, which clips the top of a pre-base vowel or the foot of a second subscript. We pick output that leaves the stack room and confirm it in the destination, not in the editor.

Since 2008

Subtitling & captioning

100+

Languages covered

ISO 9001 & 14001

Certified processes

24–48h

Typical turnaround

Subtitling rates

Professional Khmer 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 Khmer subtitler
  • Line spacing set per platform
  • Frame-accurate timing
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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 Khmer 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

Most common questions

Why do the two lines of my Khmer subtitle touch each other?

Because the line spacing was set for Latin text. A Khmer syllable can stack a vowel sign above the base and one or two subscript consonants below it, so the written unit reaches further up and further down than any letter the spacing was designed around. Raise the leading and the collision disappears. Where a platform will not let you raise it, burnt-in captions settle the spacing at delivery instead.

Why is the Khmer so much smaller than the English in the same file?

The font is compensating. To fit a four or five level stack inside the vertical space a Latin face reserves for one letter, some Khmer fonts shrink the whole cluster, and at subtitle size the result stops being readable even though every character is present and correct. The fix is a face designed for Khmer metrics plus room in the box, which we agree before the first cue is timed.

Do you prefer one line or two in Khmer?

One, wherever the dialogue allows it. In Latin script a second line costs you a strip of picture; in Khmer it costs more, because each line is taller to begin with and the gap between them has to be wider. So our subtitlers condense into a single line as the default and use the pair when a cue genuinely carries two beats rather than because the text happened to run over.

What do you need to know about our player before you start on Khmer?

Three things: which font it uses or substitutes, what line height it applies, and whether either can be overridden. Those answers decide whether we deliver a sidecar file or burn the captions into the picture, and they are worth a five-minute check at the brief. Send a link or a test clip and we will look at the Khmer on it ourselves.

What does a minute of Khmer subtitling cost?

Rates open at £20 a minute of running video. Four things move that figure: the length of the piece, whether the Khmer audio has to be typed up before anyone spots it, whether an accessibility version or a burnt-in master is part of the order, and how long the format list runs. Working out the line spacing and proving it is inside the rate. Quotes are itemised and the Price Match Promise stands behind them.

Our footage is already in Khmer. Do you caption it rather than translate it?

Yes, and a good share of our Khmer work is exactly that. Same-language captions and SDH carry the dialogue plus speaker labels and the sounds that carry meaning, which is what an accessibility review checks for. One thing to plan for: SDH lines are denser, so the spacing question on this page gets sharper rather than easier when the content is Khmer to begin with.

We have a Khmer SRT already. Is it any use?

Usually a great deal of use, and it shortens the job. Our subtitlers spot your file to picture and rebuild the lines, and the opening check is whether the coeng sequences are still intact — an invisible character is the first casualty of a careless save, and the text looks nearly right without it. If nothing exists yet, we type the Khmer audio up in house.

Does the file work in Premiere, Resolve or Final Cut?

It does, in all three, along with Avid and the caption editors built into the streaming platforms. SRT, VTT, STL and TTML all carry Khmer without trouble. Be careful about one thing: an editing timeline previews at whatever line height it likes, so approval there proves nothing about the viewer's screen. A burnt-in master avoids the question if you would rather not test it.

Ready to subtitle your video in Khmer?

Send us your video and we'll come back with an exact, itemised quote.

Professional voice over services for your audio and video productions

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
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Subtitling

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

  • Improve accessibility
  • Reach a wider audience
  • Boost SEO and video views
  • Maximise video engagement
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