Subtitling Services

Subtitles look simple on screen. Producing them is not. A subtitle has to compress meaning into character-limited lines, time itself to speech and scene changes, respect reading-speed limits, and land with cultural accuracy in the target language. Automated captioning tools produce text with timestamps. Professional subtitling produces a finished, synchronized, broadcast-quality deliverable.

ITC delivers professional subtitling and captioning in 230+ languages, with native-speaker linguists who understand the content they are translating and the format it needs to ship in. Since 1969, content companies, corporate teams, and institutions have relied on ITC when subtitle quality matters. Tell us your video runtime, target languages, delivery format, and deadline. We will scope the project, confirm linguist availability, and respond with a structured quote and delivery schedule.

Subtitling for Your Content and Industry

Subtitling is a constrained writing discipline. The linguist must translate accurately while fitting each line within character limits, timing constraints, and reading-speed thresholds that vary by language, platform, and standard. The technical requirements change by distribution channel. The quality bar changes by audience. ITC matches linguists to content type first and language second, so the person handling your subtitles understands the subject matter, the terminology, and the cultural context.

Media and Entertainment

Streaming platforms, production studios, distributors, broadcasters. For content companies, subtitle quality is visible to millions of viewers and directly affects territory launches, audience retention, and brand reputation. A delayed subtitle track means a delayed release. A bad subtitle becomes a social media screenshot.

ITC delivers broadcast-quality subtitles that meet platform-specific timing and style specifications, with native-speaker linguists who handle dialogue, idioms, humor, on-screen text, and cultural adaptation for the target territory. Disney, Netflix, Fox, Viacom, Bloomberg, eOne, and Cirque du Soleil trust ITC with content where subtitle quality is the product. Learn more about ITC’s media and entertainment services.

Corporate Training and E-Learning

Learning and development teams, HR communications, corporate video producers, compliance training managers. Global workforces need training videos, onboarding modules, executive communications, and compliance courses subtitled in the languages their employees speak. Accessibility compliance is often a co-driver: Section 508 for federal context, WCAG 2.1 AA for digital content, ADA for broader coverage.

For corporate video libraries, terminology consistency matters as much as per-video accuracy. The same product name, policy term, or compliance phrase should read the same way across every video in every language. ITC applies terminology management across projects so a 200-video training library stays consistent from the first asset to the last.

Marketing and Advertising

Social video, global campaigns, product launches, explainer videos. Marketing teams need subtitles that preserve the original voice of the brand while making the content accessible and compelling in each target market. Subtitles are often the preferred localization mode for short-form social video because they keep the original audio intact: the brand voice, the performance, the music, the energy.

Turnaround is aggressive. Campaign schedules do not wait. ITC handles burned-in subtitles for platforms that do not support closed captions, and separate subtitle files for platforms that do. Cultural adaptation, not literal translation, is what makes a campaign land in a new market. See how ITC serves marketing teams.

Education

Course content, lecture captures, educational videos, MOOCs. Universities and educational platforms need subtitles that meet accessibility mandates and serve non-native speakers of the subtitle language. Reading-speed constraints matter more in educational content because the audience may need extra time to process the text. Subject-matter terminology must be accurate across STEM, medical, legal, and business content. ITC matches linguists with domain expertise to the course material, so the subtitles reflect the discipline, not just the words.

How Professional Subtitling Works

Every subtitling project follows a structured process adapted to timed-text constraints. First, a native-speaker linguist translates and adapts the dialogue into the target language, compressing meaning to fit character-per-line and reading-speed limits. Next, a technical and linguistic editor reviews timing, line breaks, reading speed, cultural accuracy, and on-screen text placement. Finally, a QA pass checks synchronization against the source video, validates the delivery format, and spot-checks translation accuracy against the original dialogue.

This is a system built for a specific discipline. Translation alone does not produce subtitles. Transcription alone does not produce subtitles. Subtitling combines linguistic accuracy, technical timing, and format-specific delivery, and the process reflects all three.

Subtitling vs. Voice-Over vs. Transcription

Subtitling adds timed text to video and preserves the original audio. Voice-over replaces the original audio with a new language track recorded by voice talent. Transcription converts same-language audio to text. Subtitling is the mode that keeps the original performance intact while making the content accessible across languages. Many buyers use subtitling and voice-over for different content tiers: subtitles for social short-form and high-volume training, voice-over for premium long-form.

Broadcast-Quality Delivery in Any Format

Subtitling buyers evaluate vendors on technical competence as much as linguistic quality. ITC delivers in the format your workflow requires:

SRT for universal web video and broad platform compatibility
VTT for HTML5 web video and modern streaming players
TTML/IMSC1 for broadcast, streaming platform specs, and accessibility-compliant delivery
STL for EBU legacy broadcast workflows
Burned-in (open-burn) subtitles embedded directly in the video file, for platforms without caption track support

Open captions (burned into the video, always visible, no viewer control) and closed captions (separate track, viewer toggles on or off) are both standard deliverables. For multilingual projects, ITC delivers per-language tracks, each produced by a native-speaker linguist with independent QA.

Technical precision behind the deliverable includes frame-accurate timing, cue duration compliance, reading-speed limits calibrated to the target language and audience, and character-per-line constraints that respect the display surface. These constraints are not optional. They are what separate professional subtitles from text on a screen.

Accessibility-Compliant Captioning (ADA, WCAG, Section 508)

Subtitles translate dialogue for viewers who do not speak the source language. Captions serve a different audience: deaf and hard-of-hearing viewers. The distinction matters, and professional buyers need both.

Captions for deaf and hard-of-hearing viewers (SDH) include non-dialogue audio cues: sound effects, speaker identification, music description, and audio context that carries meaning. ITC produces SDH captions that meet ADA, Section 508, and WCAG 2.1 AA requirements for digital content accessibility. For U.S. federal agencies and federally funded programs, Section 508 applies. For broader digital content, WCAG 2.1 AA is the prevailing standard. For broadcast and streaming platforms, ITC meets platform-specific captioning specifications.

Accessibility compliance is not a marketing claim. It is a specific technical and editorial standard, and the deliverable either meets it or does not. ITC delivers captions that meet the standard your distribution channel requires.

The Professional Subtitling Difference

Automated captioning tools are fast and cheap. They also fail consistently on accents, specialized terminology, cultural references, idioms, humor, and multilingual content. Automated output looks like subtitles but reads like a raw transcript with timestamps: timing drifts, line breaks land mid-word, reading speed exceeds what viewers can process, and culturally specific meaning gets lost or distorted.

The hidden cost of automated captions is rework. Editing ASR output to broadcast quality, fixing timing, recompressing lines to reading-speed limits, and verifying terminology across languages takes longer than producing the subtitles professionally from the start. For multilingual projects, the rework multiplies by language count. Professional subtitling from qualified linguists is not the expensive option. It is the lower-risk option.

ITC’s translator pool of 4,500 native-speaker linguists is the foundation. Not every translator is a subtitler. Subtitling requires additional skills: timing, compression, reading-speed management, format-specific delivery. ITC matches the linguist to the content type, so the person handling your subtitles has both the language expertise and the technical discipline the work demands. Subject-matter matching ensures that medical training content gets a translator with healthcare expertise, legal video content gets a translator with legal terminology fluency, and entertainment dialogue gets a translator who can adapt humor and cultural reference for a new audience.

Have questions about format requirements, turnaround, or multilingual project scoping? Call 1-888-415-1580 to talk to a specialist.

Why Content Producers Trust ITC

Since 1969, ITC has served organizations where subtitle quality is visible, consequential, and non-negotiable. Streaming platforms and studios like Disney, Netflix, Fox, Viacom, Bloomberg, and eOne. Technology leaders like Amazon, Google, HP, and Autodesk. Brands like Pepsi, Taco Bell, and Overstock.com.

These organizations trust ITC because the subtitles that ship are linguistically accurate, technically compliant, and delivered on schedule. For buyers who also need document translation, full product localization, or voice-over production, ITC delivers the full language stack under one vendor, one contract, and one point of contact. Browse the complete language services hub for related services.

Request a Quote

Tell us your video runtime, target languages, delivery format requirements, and deadline. ITC will scope the project, confirm linguist availability, and respond with a structured quote and delivery schedule.

Prefer to talk now? Call 1-888-415-1580.

Frequently Asked Questions About Subtitling Services

What is the difference between subtitles and captions?

Subtitles translate dialogue for viewers who do not speak the source language. Captions, sometimes called SDH (Subtitled for the Deaf and Hard of Hearing), serve viewers who are deaf or hard-of-hearing by including non-dialogue audio cues: sound effects, speaker identification, music description, and audio context. Subtitles focus on linguistic translation. Captions focus on accessibility. Both are standard ITC deliverables, and many projects require both for different audience segments.

What file formats do you deliver?

ITC delivers subtitles and captions in the major broadcast, streaming, and web formats: SRT for universal web video, VTT for HTML5 and modern players, TTML/IMSC1 for broadcast and streaming platform specifications, STL for EBU legacy broadcast workflows, and burned-in (open-burn) subtitles embedded directly in the video file. Open captions (always visible, no viewer toggle) and closed captions (separate track, viewer toggles on or off) are both standard deliverables. If you are unsure which format your platform requires, tell us your distribution channel and we will confirm.

Can you create subtitles in multiple languages from a single source video?

Yes. Multilingual subtitling from a single source asset is a core strength. ITC assigns a native-speaker linguist per language, each with independent editing and QA. A single video can be subtitled into 230+ languages under one project, with consistent terminology management across all language tracks. For multilingual projects of 5 or more languages, a dedicated project manager coordinates linguist scheduling, terminology alignment, and format delivery across all targets simultaneously.

Do you provide accessibility-compliant captions for ADA, WCAG, and Section 508?

Yes. ITC produces captions that meet ADA, Section 508, and WCAG 2.1 AA requirements. For digital content, WCAG 2.1 AA is the prevailing web accessibility standard. For U.S. federal agencies and federally funded programs, Section 508 applies. SDH captions include non-dialogue audio cues such as sound effects, speaker identification, and music description. For broadcast and streaming platforms, ITC meets platform-specific captioning specifications. If your distribution channel requires a specific compliance standard, tell us and we will confirm the delivery meets it.

How do you handle subtitles for content with technical or specialized terminology?

ITC matches linguists to content by subject matter. Medical training videos are handled by translators with healthcare expertise. Legal video content by translators with legal terminology fluency. Technical and engineering content by translators who know the discipline. Entertainment dialogue by translators who can adapt humor, idioms, and cultural references. This subject-matter matching is the core of the quality process, and it is where automated captioning tools consistently fail. Terminology management is applied across video libraries so that the same term reads consistently from the first asset to the last.

What is the difference between subtitling and voice-over?

Subtitling adds timed text to the video and preserves the original audio. The original voice, performance, music, and energy stay intact. Voice-over replaces the original audio with a new language track recorded by voice talent in a studio. Subtitling is lower investment, faster turnaround, and preserves authenticity. Voice-over is higher investment and delivers full audio immersion. Many organizations use both: subtitles for social short-form, training videos, and high-volume content, and voice-over for premium long-form content where full audio localization is the goal. See [voice-over services](/language-services/voice-over/) for full audio replacement.

How long does it take to subtitle a video?

Turnaround depends on video runtime, the number of target languages, content complexity (general dialogue vs. technical terminology vs. creative adaptation), delivery format requirements, and whether SDH captions are needed. For multilingual projects, ITC can assign linguists in parallel across languages to compress the delivery timeline. Standard and expedited turnaround options are available. When you request a quote, tell us your deadline and we will confirm whether we can meet it, along with a scoped delivery schedule.

Can you burn subtitles directly into the video file?

Yes. Burned-in subtitles (also called open-burn) are embedded directly in the video file and are always visible to the viewer, with no on or off toggle. This format is suitable for platforms that do not support closed caption tracks, including some social media platforms and corporate video players. Closed captions are delivered as standalone subtitle files (SRT, VTT, TTML/IMSC1, STL) that the viewer can toggle on or off. Both burned-in and closed caption delivery are standard ITC services, and many projects require both for different distribution channels. ---

Clients testimonials

"ITC is a great partner because they ask all the right questions. With ITC, they always go above and beyond in verifying the information and making sure I am happy with the product" ~Cynthia C - International Social Services Non-profit

In the world of consulting, when a client needs a document translated, the timeline is yesterday and the budget is tight to say the least. We have had several urgent translation projects and much to our fortune, ITC has been there for us each time. Being a service company and working with many others – you learn to appreciate the combination of courtesy, professionalism and precision – ITC has this and more which is why Educational Consulting Company would recommend this team to all. From contracts to brochures – they are full service translation not just by scope, but by quality as well. Thanks ITC!

“Wow - What a pleasant surprise! A company that makes working with them super! ITC’s team has our thanks for their continued efforts on our projects. They manage to translate, proofread, design and deliver our projects, ahead of schedule and within or under budget. Their quality is exceptional and their customer service is exemplary!”