Who this decision is for
- A brand with a finished global hero video wondering if adding Korean subtitles will be enough for a Korean social campaign.
- A software company producing tutorials and webinars that need Korean versions on a steady cadence.
- A tourism organization with destination films featuring foreign narrators and text overlays throughout.
- A video producer given a Korean localization brief with no source files for graphics and needing to know what to request.
The decision to make
The decision is how the Korean viewer will experience the message: reading it, hearing it or watching something rebuilt for them. Subtitles are quicker and keep original voices, but reading competes with picture and mobile viewers may watch on mute. Dubbing removes reading effort but requires voice casting, script fitting and more review. A re-cut changes structure, music, pacing or scenes for Korean expectations and is closest to new production.
On-screen text is the hidden work. Titles, lower thirds, product labels and graphics may be baked into the video, so localization may require editable source files. Approvals must cover script, timing and visuals, and headquarters needs back-translations to judge them. Decide early whether Korean is a distribution version of a global asset or a purpose-made Korean asset, because that determines budget, schedule and who owns final approval.
Options compared
| Option | Best when | Watch out for |
|---|---|---|
| Korean subtitles on the original | The speaker, footage and tone already work for Korean audiences and you need fast, economical localization. | Subtitle length limits force condensing, and viewers on mute must rely on captions alone. |
| Korean dubbing or voice-over | Audiences expect spoken Korean, such as consumer explainers, tutorials or content for broader demographics. | Timing, casting and lip alignment add cost and review; poor voice choice can undermine credibility. |
| Re-cut or new Korean version | The original story, pacing or references do not translate and the campaign is important enough to justify new production. | It costs closest to a new shoot and needs creative approval, so define scope and ownership carefully. |
Risks to manage
- Baked-in text. Titles and graphics burned into the video cannot be changed without source files. Request editable project files before agreeing a localization scope.
- Subtitle overload. Literal subtitles are too long to read at speed. Adapt lines to reading speed and screen size, especially on mobile.
- Wrong voice choice. A voice that does not fit the brand or audience weakens credibility. Audition and review voice samples before recording the full script.
- Approval confusion. Approvers cannot read Korean timing files. Supply back-translated scripts and review videos with subtitles in a shared player with time-coded comments.
Evidence to gather first
- The final English script, timecodes and, if possible, the editable project files with separate audio, graphics and music tracks.
- The channels where the video will run and whether viewers commonly watch with sound, since this affects subtitle priority.
- Brand voice and speech-level decisions already made, so scripts and voice talent match your Korean identity.
- Any regulated claims or sensitive statements in the video that must go to counsel before release.
Recommended process
- Asset and channel review. SWIN reviews your video, source files and target channels, then recommends subtitles, dubbing or re-cut with reasoning.
- Script adaptation. Native writers adapt the script for reading or speaking, fitting length and rhythm, and provide a back-translation for approvers.
- On-screen text plan. We list every on-screen graphic and label, decide what is localized, and coordinate replacement in the source files.
- Recording or subtitle build. We prepare subtitle files or voice recordings, with samples reviewed first so casting or style can be adjusted early.
- Review and delivery. A native reviewer watches the final video on mobile and desktop, corrections are made, and approved versions are delivered in the required formats.
What SWIN can deliver
- A localization route recommendation with reasons for subtitles, dubbing or re-cut.
- An adapted Korean script with back-translation for headquarters approval.
- An on-screen text inventory noting each item to localize, keep or replace.
- Subtitle files or voice recordings in the formats needed for each channel.
- A final review report listing checks on timing, readability and mobile playback.