Most companies translate their documents, websites, and marketing materials. Most of those same companies publish video content in one language and leave it there. A product explainer on YouTube, a training module for remote staff, a webinar recording, a podcast, all of it sits in the source language while potential customers, learners, and partners in other markets either struggle with it or skip it entirely.

Audio and video translation services exist to fix that. But the term covers four distinct approaches, subtitles, dubbing, voice over, and captions, each suited to different content types, budgets, and audience needs. Choosing the wrong one costs money and time. This guide explains what each option is, when to use it, and what it costs in 2026.

 

The Four Audio and Video Translation Approaches

Subtitles

Subtitles are a text rendition of the spoken dialogue, displayed at the bottom of the screen, translated into the target language. The viewer hears the original audio while reading the translation. Subtitles are the fastest and most cost-effective audio and video translation option for most projects.

When subtitles work best:

  • Documentary, educational, and training content where viewer attention is on the screen
  • Online video where muting is common (social media, LinkedIn, YouTube)
  • Content with a limited localization budget that needs to reach multiple language markets quickly
  • Streaming and on-demand content where viewers expect subtitles as standard

What subtitles cannot do: They cannot replicate the emotional impact of a speaker's voice in the target language. A motivational presentation subtitled in five languages still sounds like the original speaker to all five audiences. For brand voice and emotional connection, dubbing or voice over is more effective.

Polilingua delivers subtitles in SRT, VTT, and broadcast formats across 200+ languages, produced by native-speaking linguists with ISO 17100:2015 certification. See our full subtitling services for format specifications and turnaround times.

 

Dubbing

Dubbing replaces the original audio track with a translated and re-recorded version in the target language. Professional voice actors perform the translated script, synchronized to the lip movements and timing of the original recording.

When dubbing works best:

  • Children's content, where reading subtitles is not practical
  • High-production-value brand content where the viewer experience must feel native
  • Markets where dubbing is the cultural norm, Germany, France, Italy, Spain, and Latin America all have strong dubbing traditions
  • eLearning content where learners need to focus on the material, not the subtitles

What dubbing costs: Dubbing is the most expensive audio and video translation service. It requires translation, script adaptation (so the translated dialogue fits the lip movements), voice casting, studio recording, and audio mixing. For a 5-minute corporate video, dubbing in a single language typically costs 3–5x more than subtitling the same content.

AI dubbing in 2026: Automated AI dubbing platforms have reduced costs significantly for some use cases, particularly long-form content with a single speaker and clean audio. However, AI dubbing still produces noticeable artifacts in tone, naturalness, and cultural register for professional and brand-critical content. The professional standard in 2026 is a hybrid workflow, AI-generated first draft, human linguist review and correction, professional voice recording.

 

Voice Over

Voice over translates the audio track and records a new narration in the target language, but without synchronizing to lip movements. The translated audio plays over the original video, often with the original audio slightly audible underneath. This is the standard for corporate training videos, documentaries, and instructional content.

When voice over works best:

  • Corporate training and e-learning modules where the speaker is not on camera
  • Documentary content with interview-style talking heads
  • Instructional and how-to videos
  • Content that needs multiple language versions quickly and at lower cost than full dubbing

Polilingua provides multilingual voice over services in 200+ languages with native-speaking voice artists, including studio-quality recording and delivery in broadcast formats.

Voice over vs dubbing: The distinction is synchronization. Voice over does not attempt to match lip movements, it is a narration that runs parallel to the visual. Dubbing attempts to match the speaking mouth movements on screen. For most corporate and training content, voice over is the right choice. For content where the speaker's face is prominent throughout, dubbing delivers a more professional result.

 

Captions and Closed Captions

Captions are a text rendition of the full audio, spoken dialogue plus sound effects, speaker identification, and music cues, designed for viewers who are deaf or hard of hearing. Closed captions can be turned on and off by the viewer, open captions are burned into the video and always visible.

This is not the same as subtitles. Subtitles translate dialogue for hearing viewers who do not understand the language. Captions render the full audio for viewers who cannot hear it. The European Accessibility Act (EAA), which came into force across EU member states in June 2025, requires captions, not plain subtitles, for video content across a wide range of digital products and services. Briefing a provider for subtitles when captions are required is the most common and most expensive mistake in video localization.

 

Who needs captions in 2026:

  • Any company with digital products or services sold in the EU that includes video content
  • Broadcasters and streaming platforms operating in markets with accessibility legislation
  • Public sector organizations and government agencies across the UK, EU, and US
  • Corporate training content distributed to employees in accessibility-regulated environments

See our subtitling services page for EAA compliance specifications and caption format requirements.

 

The Foundation of Every Workflow

Every audio and video translation project starts with transcription, converting the spoken audio into written text. The transcript becomes the source document that translators, voice actors, and subtitle spotters work from.

Transcription quality directly affects translation quality. A transcript with missed words, incorrect terminology, or poor speaker identification produces a translation that inherits all those errors. Professional transcription services include time-coded transcripts for subtitle and dubbing projects, verbatim transcription for legal and research content, and intelligent verbatim transcription for corporate and training material.

For audio and video translation projects, transcription and translation are typically delivered as a combined workflow, the transcript is produced, reviewed, and passed directly to the translation team, reducing turnaround time and maintaining quality control across both stages.

 

Need Audio or Video Content Translated for a Global Audience? Polilingua provides subtitles, dubbing, voice over, captions, and transcription services in 200+ languages, with ISO 17100:2015 certified linguists, EAA-compliant caption formats, and delivery in all major broadcast and digital formats. Get a Quote

 

Video Translation Services by Industry

Healthcare and Medical

Video translation services in healthcare operate under stricter accuracy requirements than almost any other sector. Patient education videos, clinical trial explainers, surgical training footage, and informed consent recordings must be translated with specialist medical terminology and reviewed by subject-matter experts.

Errors in healthcare video translation carry regulatory and patient safety implications, a mistranslated dosage instruction or a mislabeled surgical step is a clinical risk, not just a quality issue. Polilingua's medical translation services extend to multimedia content, with life sciences translators who hold domain credentials in the relevant therapeutic areas.

 

Corporate and Business

Corporate training videos, onboarding modules, investor presentations, and internal communications are among the most common business video translation requests. The key requirement is terminology consistency, the same product names, process descriptions, and organizational terms must appear consistently across every language version and every video in a series.

Translation memory and CAT tools ensure consistency across large corporate video localization projects. Polilingua maintains dedicated translation memories for enterprise clients, so terminology established in a training video carries over to every subsequent module in the same series.

 

eLearning and Education

eLearning localization combines video translation with on-screen text adaptation, interactive element translation, and LMS integration. A subtitled video embedded in a learning management system needs its subtitle file formatted for that specific platform, SCORM, xAPI, or custom LMS formats, not just delivered as a generic SRT file.

 

Legal and Compliance

Legal video content, depositions, court recordings, compliance training, regulatory explainers, requires certified translation and, in some jurisdictions, sworn translation by an accredited translator. See Polilingua's certified translation services for legal video translation requirements.

 

Multimedia and Publishing

Publishing houses, media companies, and streaming platforms managing multilingual content at scale need a localization workflow that handles metadata, accessibility formats, and multiple language versions simultaneously. Polilingua's publishing and media translation services cover subtitle creation, SDH caption production, and metadata localization for digital distribution.

 

What Video Localization Services Actually Cover

Video localization goes beyond translating the spoken audio. A fully localized video may require:

  • On-screen Text Adaptation — any text that appears on screen (lower thirds, titles, graphics, slides) must be translated and formatted to fit the visual layout of the target language. German text runs 20–30% longer than English, Arabic runs right to left.
  • Audio Description — for visually impaired audiences, audio description tracks narrate visual content that is not conveyed through dialogue. Required under EAA for certain content categories.
  • Cultural Adaptation — colors, gestures, humor, and references that work in the source culture may require adaptation for specific target markets. This is localization, not translation.
  • Multilingual SEO — video content published online needs multilingual metadata, titles, descriptions, and tags, optimized for how target-language audiences search. Multilingual SEO services extend to video metadata, ensuring localized video content surfaces in the right markets.

 

How to Brief a Video Translation Provider

The quality of the brief directly determines the quality of the output. What to include:

  • The Source Files — ideally the original video plus any existing script, transcript, or subtitle file. A clean transcript reduces production time and eliminates transcription errors.
  • The Target Audience and Market — not just the language, but the regional variety (Brazilian Portuguese vs European Portuguese, Latin American Spanish vs Castilian Spanish) and the audience's level of subject-matter familiarity.
  • The Format Required — which service (subtitles, dubbing, voice over, captions), which file format (SRT, VTT, TTML, EBU-STL for broadcast), and which platform the finished content will be published on.
  • Terminology and Style Guides — any glossaries, brand voice documents, or previously translated materials that should inform the translation. For corporate clients, this is the single most important input for consistency.
  • Turnaround Requirements — standard video translation turnaround for a 10-minute video is 3–5 business days for subtitles and 7–14 business days for dubbing or voice over, depending on language availability and studio scheduling.

 

Frequently Asked Questions

  • What is the Difference Between Subtitles and Closed Captions? Subtitles translate spoken dialogue for hearing viewers who do not understand the source language. Closed captions render the full audio, dialogue, speaker identification, sound effects, and music, for viewers who are deaf or hard of hearing. The European Accessibility Act requires captions, not plain subtitles, for most commercial video content distributed in the EU.
  • How Much do Audio and Video Translation Services Cost? Subtitle translation typically starts at $0.07–$0.12 per word for the translation, plus a spotting and formatting fee per minute of video. Voice over adds studio recording costs. Dubbing is the most expensive option, typically 3–5x the cost of subtitling the same content. Contact Polilingua for a project-specific quote based on language, duration, and format requirements.
  • Can AI Translate Audio and Video Automatically? AI tools can produce a usable first draft for subtitles in major language pairs with clean, single-speaker audio. They cannot reliably handle accents, overlapping speakers, specialized terminology, or cultural adaptation. The professional standard in 2026 is a hybrid workflow, AI-assisted first draft, human linguist correction and review, quality check against the source. For brand-critical, compliance, or patient-facing content, human-led translation with AI assistance is the appropriate standard.
  • How Long Does Video Translation Take? A 10-minute corporate video typically takes 2–3 business days for subtitle translation and formatting, 5–7 business days for voice over, and 10–15 business days for full dubbing in a single language. Multiple simultaneous language versions can be delivered in parallel without extending the timeline proportionally. Rush delivery is available for urgent projects.
  • What File Formats does Polilingua Deliver Subtitles in? SRT, VTT, TTML, EBU-STL, and SCC for broadcast applications. Custom formats for specific platforms or LMS systems are available on request. Contact our team with your platform requirements before the project starts.

 

Ready to Take your Video Content Global? Polilingua provides audio and video translation services across 200+ languages, subtitles, dubbing, voice over, captions, and transcription, with ISO 17100:2015 certified linguists, EAA-compliant formats, and delivery for every major broadcast and digital platform. Get a Free Quote.