Video Localisation for Southeast Asia: Languages, Voiceover and Subtitles for Explainer Videos

One English explainer video can carry your message into Singapore. It carries it a much shorter distance into Jakarta, Bangkok, Ho Chi Minh City or Hong Kong. Video localisation in Southeast Asia comes down to three decisions: which markets get which language, how deep each version goes, and whether the master video was built to be localised at all.

Why one English video under-serves APAC buyers

Most B2B technology companies in Singapore make their first explainer in English, and they are right to. English is the working language of regional tech, of investors and of most procurement teams. The trouble starts when that same video is asked to open a market where the buyer reads English well enough to sign a contract and still decides in another language.

The question most teams ask is “do our buyers understand English?” The better question is: “in which language does our buyer build conviction?” Comprehension gets you through a sales call. Conviction gets the internal champion to forward your video to a finance director who has never heard of you.

That survey measured consumers, and your buyer is a business, so treat the number as a signal of instinct. A procurement lead in Surabaya is still a person who reads faster, trusts more and shares more readily in Bahasa Indonesia.

The damage from ignoring this is quiet. Nobody tells you the English video lost the deal. It simply gets watched less, forwarded less and remembered less in the markets you most need to win, and the regional team starts building its own off-brand version in a weekend.

The language picture, market by market

Southeast Asia is not one audience with one second language. Each market has its own national or official language, its own relationship with English, and in the Chinese-speaking markets, its own script. The table below sets out the legal position and what it usually means for a B2B explainer.

Three details in that table cause most of the rework.

Singapore is English-first, and multilingual underneath. The 2020 Census found English was the language most frequently spoken at home for 48.3% of residents aged five and over, up from 32.3% in 2010.[11] That is a plurality, and the same release notes that over 80% of those English-speaking households also spoke a vernacular language at home. A Singapore campaign aimed at SMEs, heartland consumers or the public sector can earn its keep in Mandarin, Malay or Tamil.

Bahasa Malaysia and Bahasa Indonesia are two markets. They share a root and a large vocabulary, and they differ in spelling, everyday business terms and accent. A listener in Kuala Lumpur knows within a sentence that the voice was recorded for Jakarta, and the reverse is also true. Plan two scripts, two reviewers and two voices.

Chinese is at least two deliverables. Singapore’s Chinese press moved to simplified characters in the 1970s,[12] and simplified characters are the mainland standard. Hong Kong’s own Education Bureau describes traditional characters and Cantonese as the forms most widely used in its schools and community.[9] A Mandarin version with simplified subtitles serves Singapore and the mainland. It does not serve Hong Kong. If Taiwan is on your list, scope it as its own market with its own native review.

Subtitles, voiceover or full re-version

“Subtitles vs dubbing” is the wrong frame, because it offers two options where there are really four. Each one changes a different layer of the video, takes a different amount of work and does a different job.

Two pieces of research sharpen the subtitle decision. A meta-analysis of captioned video for second-language learners found captions improved both listening comprehension and vocabulary learning.[13] And an overview of 29 reviews covering 1,189 studies and 78,177 participants ranked captioning second-language videos among the design choices with the largest benefits for learning.[14]

The same overview also supported the verbal redundancy principle: viewers learn better without on-screen text that duplicates the narration word for word. Read the two findings together and the rule is clear. A viewer working in their second language gains from captions. A viewer hearing their first language, with the full script printed across the screen, gets a cluttered frame. That is one more reason a new voiceover beats subtitles for your priority markets.

Subtitles help a buyer follow you. A voice in their own language helps them believe you.

Design a multilingual explainer video that localises quickly

The effort behind every future language version is set in the first storyboard. A master built with localisation in mind can take a new language in days. A master built without it can take almost as long to adapt as it did to make. Six decisions make the difference.

1. Let the animation carry the idea. Text-light motion design, where shapes, icons and movement explain the concept, localises with almost no extra work. Kinetic typography, where the words are the animation, has to be rebuilt in every language.
2. Keep on-screen text on its own layers. Every title, label and callout should be live, editable text on its own layer in the project file, kept apart from illustrations and UI artwork. Swapping a text layer takes minutes. Repainting an illustration takes days.
3. Leave room for expansion. Translated lines often run longer than the English. As a planning rule of thumb, design text boxes with roughly a third more room than the English needs, choose a typeface family that covers every script on your list, and test each font with real translated text before animation starts.
4. Deliver separate audio stems. Ask for voiceover, music and sound effects as separate tracks. A new language then means recording a new voice and remixing it over the existing music and effects, with nothing to strip out.
5. Pace the edit with slack. A script that fills every second in English will overrun in a language that needs more syllables for the same idea. Leave short pauses between scenes, so the edit can absorb a longer voiceover without re-animating. Our guide to explainer video length covers how to set the English runtime in the first place.
6. Choose culturally neutral visuals. Stylised characters, a flexible colour palette and generic settings travel further than a specific office, a specific street or a specific hand gesture. Where your product UI appears, design it as an animated, simplified interface that can take translated labels.

None of this makes the English video worse. Text-light, well-paced animation is simply good explainer design, which is why it tends to appear in the strongest 2D animation work whether or not a second language was ever planned. The only extra ask is discipline at the storyboard stage, and it pays back on the first translation.

The cultural review pass

Translation gets the words right. A cultural review checks whether everything else lands. It belongs after the script is translated and before a single frame is animated or a voice is recorded, because that is the last point at which changes are quick to make.

A useful review asks a native speaker in the market to check:

• Terminology. Is the translated product vocabulary the term your buyers actually use, or a literal rendering nobody searches for?
• Register. Is the tone right for a senior buyer, with the level of formality a local sales lead would use in a first meeting?
• Examples. Do the use cases, company types and numbers in the script make sense locally, including currency and date formats?
• Visuals. Do characters, clothing, food, colours, gestures and settings read as intended, and is anything likely to cause offence?
• Names and claims. Are legal, regulatory or compliance claims accurate for this market?
• Voice. Does the casting brief describe an accent and age that sounds credible to this buyer?

The best reviewer speaks the language and sells to your buyer. Your regional sales lead or a trusted partner is usually the person who spots that a feature name will confuse a customer in Hanoi.

What to localise first

You cannot localise everything at once, and you should not try. Rank markets by pipeline you expect in the next twelve months, then rank assets by how close they sit to a buying decision.

For most B2B software companies the first move is the core explainer in the single biggest new market. It is the asset a local champion forwards internally, and it sets the vocabulary every later video will reuse. The product demo follows once the explainer has earned the meeting.

Onboarding video comes later, and it compounds. A modular onboarding series built on one design system can take a new voice track lesson by lesson, so each new lesson is quicker to localise as the library grows.

If a Singapore grant is part of your plan for an overseas market, the rules on what counts as market-adapted content matter before you brief anything. Our guide to Singapore grants for marketing video covers the current position.

How to plan a localisation project

Localisation is planned per language and per level of change. A clear plan breaks each language into its parts: translation and native review, voice casting and recording, re-timing the edit, re-setting on-screen text, any re-designed scenes, and a final quality check in the finished file. Name an owner and a sign-off for each part before work starts.

The biggest lever on that plan is how the master was built. The same Thai voiceover is a quick job on a text-light animation with clean stems, and a slow one on a text-heavy edit with the narration baked into the mix. For where localisation sits in the wider schedule, see the explainer video production process.

Then plan the sequence. Write and approve the English script, translate it, run the cultural review, then record and animate. Localising after the English video is locked is possible. Localising while the storyboard is still open is faster and needs less rework.

The short version

An English explainer opens Singapore and part of the Philippines; it under-serves buyers in Indonesia, Thailand, Vietnam, Hong Kong and much of Malaysia, where the buyer builds conviction in another language or script. Match the depth to the market: subtitles to test and support, a new voiceover to sell, a full re-version for the market that matters most. Build the master text-light, with text on its own layers, room to expand and separate audio stems, and put a native, commercially minded reviewer between translation and production. Then localise the video closest to revenue in your biggest new market, and let the rest follow the pipeline. You can see how we approach regional work in the portfolio.

Frequently asked questions

Should I use subtitles or voiceover to localise an explainer video?

Use subtitles when the viewer is comfortable in English and needs support, or when the video plays muted in a feed. Use a new voiceover when the viewer is buying in their own language, or when the video carries a lot of narration. Subtitles are faster to produce; a localised voice is what makes the video feel made for the market.

Which languages does a Singapore B2B video need?

Most Singapore B2B videos run in English, which the 2020 Census found was the language most frequently spoken at home for 48.3% of residents. Singapore has four official languages, so add Mandarin, Malay or Tamil when your buyer is a specific community, a government audience or a consumer segment that decides in that language.

Is Bahasa Malaysia the same as Bahasa Indonesia for voiceover?

No. The two are closely related but differ in vocabulary, spelling and everyday business terms, and a listener hears the difference in the first sentence. Cast a Malaysian voice for Malaysia and an Indonesian voice for Indonesia, and have a native reviewer in each market check the script before recording.

Can one Chinese version serve Singapore, Hong Kong and mainland China?

Rarely. Singapore and mainland China write in simplified characters, while Hong Kong schools and the wider community mostly use traditional characters and Cantonese. A Mandarin voiceover with simplified subtitles suits Singapore and the mainland; Hong Kong usually needs traditional characters, and often a Cantonese voice for anything customer-facing.

Can a studio in Singapore localise video for teams in Malaysia, Indonesia, Thailand or Vietnam?

Yes. The master video, the design system and the edit stay with one studio, while scripts are translated and reviewed by native speakers in each market and voiceovers are recorded with local talent under remote direction. Your in-market team signs off the script and the cultural review before anything is animated or recorded.

Which video should I localise first?

Localise the video closest to revenue in your biggest new market first. For most B2B software companies that is the core explainer on the homepage or in the sales deck, followed by the product demo. Onboarding and support videos come next, once you have customers in that market who need them.