Japanese and Korean, as declared
Japanese is in eight of the nine declared site lists and Korean in seven, which makes this the region the register agrees about most. Chinese is the exception: four vendors declare it on their own host, and two more declare it on a domain the counting rule discards. As of 2026-09-22.
| Vendor | Codes declared | Note |
|---|---|---|
| CapCut | ja-JP, ko-KR, zh-TW | 27 alternates declared in all |
| Higgsfield | ja, ko | 5 alternates declared in all |
| Kling AI | ja, ko | 20 alternates declared in all |
| PixVerse | ja, ko, zh | 13 alternates declared in all |
| Runway | ja, ko | 5 alternates declared in all |
| SceneMixer | ja, ko, zh-Hant | 15 alternates declared in all |
| Synthesia | ja | 9 alternates declared in all |
| Vidu | ja, ko, zh | 9 alternates declared in all |
Inclusion rule. Only languages declared as hreflang alternates on the host being read are listed. Coverage is not shown per language for the voice column, because the vendors that publish a list there are not the vendors that declare a site language here. Order. Vendors that declare any of these codes, in register order; then the codes no vendor declares.
1A dialogue-only language is a useful shape
Cantonese being published for dialogue and not for the interface says something specific: somebody decided the product should speak it without deciding a settings menu needed translating into it. For a market where viewers and operators may want different languages, that separation is the correct one and it is rare enough to be worth pointing at.
It is also a reminder that these columns are not a ladder. A language can matter in one and not in the other, and a vendor that treats them as one number cannot express that.
2Chinese is where the counting rule shows itself
CapCut declares Chinese only as zh-TW, PixVerse and Vidu declare a bare zh, and SceneMixer declares zh-Hant. Kling AI and SceneMixer each declare a further Chinese alternate that points at a different domain, and both are skipped here for the same reason: a separate domain is a separate property with its own prices and its own sign-in.
The upshot is that the Chinese column in this region reads lower than a flag count in a language switcher would. That is the rule doing its job rather than an omission, and the raw declarations are printed on the vendor pages so a reader can apply a different rule if they want one.
3Agreement on the site does not settle the voice
Eight vendors declare a Japanese site and only two of those eight also publish a named voice list: SceneMixer and Synthesia. Kling AI declares one and publishes a count of five instead, which answers nothing about this region in particular. The remaining five declare a Japanese site and say nothing at all about what their output speaks.
Several long named voice lists here come from Fliki, HeyGen and VEED, none of which declares a site alternate in any language. So a producer working in Japanese or Korean should read this page for where support will exist and then leave it, because the shortlist that decides whether a series can be made is a different set of vendors entirely.
- Site languages15 languages: ar, de, en, es, fr, id, it, ja, ko, nl, pt, ru, tr, uk, zh-Hantdeclared as same-domain alternates
- Site languages20 languages: ar, de, en, es, fil, fr, hi, id, it, ja, ko, ms, nl, pl, pt, ru, th, tr, uk, videclared as same-domain alternates
4Sources
Every declared list is read from the vendor's own host and recorded in full on the register, checked 2026-09-22. The counting rule is on how counted; the spoken side is on dialogue languages. Nearby markets: Southeast Asia, Europe.