AreaAudit

Which languages each generator says it supports, and where

Dutch marks the boundary of the deep European sets

Four of the nine vendors that declare a site language declare Dutch. Every one of them is a vendor whose set extends past the shared European core, and none of the sets built around East Asia includes it. As of 2026-09-22.

The point in a declared set where two strategies separateEvery declared set in this register contains the same European core. After it, some vendors continue in Europe and add this language beside Italian, and others turn towards East Asia and add neither. Which branch a vendor took is readable from whether this code is present.After the European core, which way did the set go?Kept going in EuropeThis language appearsFour vendors, every one of which alsodeclares Italian.Turned to East AsiaNeither appearsSets that added Japanese, Korean andChinese instead.The core itself is in every declared set here
Fig. 1 Four vendors declare this language and the same four declare Italian, which is why the two codes work as a single marker.
Every vendor declaring Dutch on the host being read, with the code it uses. Recorded 2026-09-22.
VendorCode as declaredForm of the codeThe set it sits in
CapCutnl-NLRegion-tagged27 locales, every one but English region-tagged
Kling AInlBare language code20 bare codes
SceneMixernlBare language code15 codes, one of them script-tagged
SynthesianlBare language codenine codes, one of them region-tagged

Inclusion rule. Vendors declaring this language as a same-host hreflang alternate. A vendor serving the language without declaring it cannot be seen by this method and is not listed. Order. Alphabetical by vendor.

1A language that separates two strategies

German, English, Spanish and French appear in almost every declared set here. Dutch appears in four, and those four are the sets that kept going in Europe: the 27-locale set, the 20-code set, and two mid-sized sets that added Italian beside it.

The sets that stopped at the core and expanded eastwards instead have no Dutch in them. So the presence of this code is a fairly reliable sign of which direction a vendor chose after the first four or five languages.

2A small market that gets translated early

The Netherlands is a small country with an unusually high rate of English reading, so a Dutch marketing page is not strictly necessary to reach its buyers. Four vendors translated one anyway.

That is evidence about business software buying rather than about language: a localised page converts better even where the audience reads English. It is the same reason the Nordic languages appear at all, and they appear less often than this one.

3Nothing follows about the output

Three of these four vendors publish nothing about the language of a generated script or a spoken line. A Dutch site is a Dutch site, and it says nothing about whether a finished video could be in Dutch.

Nor do the codes say which Dutch. Flemish and the Netherlands norm differ audibly, and no vendor in this register declares a regional variant of this language or publishes a voice inventory that names one.

4Sources

Each row was read from the vendor's own markup on 2026-09-22 and is kept in the register; what counts as a declaration is on how counted. The European core is described on the Europe market page.

Languages either side of this one in the index: Chinese and English. Every language any vendor declares is listed at one language at a time.

  • Site languages
    9 languages: de, en, es, fr, it, ja, nl, pt-BR, svdeclared as same-domain alternatessynthesia.io / recorded 2026-09-22
  • Site languages
    Every alternate but English is a language-region pair; Russian is declared only as ru-BY and Chinese only as zh-TWhow the codes are writtencapcut.com / recorded 2026-09-22
  • Site languages
    20 languages: ar, de, en, es, fil, fr, hi, id, it, ja, ko, ms, nl, pl, pt, ru, th, tr, uk, videclared as same-domain alternateskling.ai / since 2026-09-12 / checked 2026-09-22