Professional Video Subtitling & Captioning Services
Time-coded open/closed captions, multilingual subtitle translation, and frame-accurate synchronization across 100+ languages for films, corporate webinars, and social media.
Comprehensive Video Captioning Solutions
From accessibility closed captioning (SDH) to multilingual subtitle translation for international cinema and streaming, our native linguistic editors ensure flawless viewer engagement.
Closed Captions (CC) & Subtitles (SDH)
Accessible, comprehensive captioning for deaf and hard-of-hearing audiences featuring speaker identification, sound effects [SFX], music cues, and full regulatory broadcast compliance.
- Speaker ID, Audio Cues & Ambient Tone Descriptions
- FCC, ADA, BBC & Netflix Delivery Compliance
- Frame-Accurate Shot Change & Scene Snapping
- Clean Separation of Dialogue & Background Audio
Multilingual Subtitle Translation
Culturally resonant subtitle translation tailored for global audience engagement on Netflix, YouTube, Vimeo, corporate LMS portals, and festival film releases.
- Native In-Country Linguists for Idiomatic Fluency
- Character-per-Second (CPS) Speed Adaptation
- Cultural Transcreation of Humor & Pop-Culture Slang
- Over 100+ Global Target Language Pairs Supported
Open Captions & Burned-In Text
Hardcoded stylised subtitles rendered directly into your video files for guaranteed high-impact playback across sound-off social media feeds (LinkedIn, Instagram, TikTok, Facebook).
- Custom Brand Typography, Colors & Bounding Boxes
- Aspect Ratio Optimization (16:9, 9:16 Reels/Shorts, 1:1)
- ProRes 422, H.264 & H.265 Master Export Delivery
- Zero Drop in Visual Quality / Bitrate Preservation
Time-Coded Transcript & Asset Delivery
Universal file export compatibility formatted for video editing suites, streaming distributors, and automated ingest pipelines.
- Standard SubRip (.SRT) & WebVTT (.VTT) Delivery
- Broadcast Standards: Scenarist (.SCC) & Cheetah (.CAP)
- NLE Timelines: Adobe Premiere XML & Final Cut Pro (FCPXML)
- Advanced SubStation Alpha (.ASS) for Dynamic Karaoke/Styling
The WritingBase Subtitling Standard
Captions must be readable, synchronized, and transparent to the viewer. We engineer our subtitles to match human cognitive processing speeds and narrative cadence.
Frame-Accurate Synchronization
Subtitles that linger or flash too quickly disorient viewers. Our subtitle engineers enforce strict timing algorithms aligned with scene changes and dialogue cadence.
- Reading Speed Limits (CPS): Strict adherence to 15-17 characters per second for adult viewing, and 12-14 CPS for educational/children content.
- Line Length & Line Breaks: Maximum 37-42 characters per line (CPL), formatted with natural grammatical breaks to prevent awkward eye jumps.
- Shot-Change Snapping: Subtitle cues snap cleanly to camera cuts preventing captions from overlapping scene boundaries.
- Minimum Duration: Guaranteed minimum 1.0 second per event so short affirmations (“Yes”, “No”) remain legible.
Native Multilingual Localization
Machine translation consistently misinterprets on-screen dialogue. Our human linguists capture humor, idiomatic expressions, cultural nuances, and pacing.
- Cultural Adaptation & Humor: Expert transcreation ensuring jokes, sarcasm, and references translate with authentic target-market impact.
- Technical & Industry Terminology: Dedicated subject-matter linguists for medical, legal, corporate, and engineering webinar localization.
- Complex & Non-Latin Scripts: Native typography support for Arabic/Hebrew (RTL), Devanagari, Japanese, Chinese, and Korean scripts.
- Dual-Review QA: Every subtitle file is spot-checked against video playback by a senior QC editor before final delivery.
Platform & Format Compatibility
We export files engineered for seamless upload to any video ecosystem.
Frequently Asked Questions
Everything you need to know about our professional video subtitling, closed captioning, and video localization services.
We accept all primary video containers including MP4, MOV, AVI, MKV, ProRes, and WebM, as well as cloud video links (YouTube, Vimeo, Google Drive, Frame.io). For subtitle delivery, we provide standard SubRip (.SRT), WebVTT (.VTT), Scenarist (.SCC), Cheetah (.CAP), EBU-STL, SubStation Alpha (.ASS), and NLE timeline sequences (Adobe Premiere XML, Final Cut Pro FCPXML). We also provide burned-in MP4/MOV exports.
Standard subtitles translate or transcribe spoken dialogue for viewers who can hear the audio but do not speak the language. Closed Captions (CC) and SDH are tailored for audiences who cannot hear the audio, providing dialogue alongside critical non-speech sound effects [SFX], background laughter, musical moods [Soft jazz playing], and speaker identification cues.
When languages expand (for instance, German, Russian, or Spanish typically expand by 20% to 30% compared to English), direct translations can flash across the screen too quickly. Our linguistic subtitlers skillfully condense and edit phrasing to respect cognitive reading speed ceilings (typically 15-17 characters per second) without omitting key narrative nuances or context.
For social media feeds (LinkedIn, Instagram Reels, TikTok, Facebook), burned-in open captions are strongly recommended because over 80% of viewers scroll with sound muted. For streaming platforms (YouTube, Vimeo, OTT, corporate intranets) and multilingual broadcasts, soft sidecar files (.SRT / .VTT) are ideal because they allow users to toggle captions on/off and select their preferred language.
We treat all client media with institutional security. All audio and video assets are handled under non-disclosure agreements (NDAs) over encrypted channels. Our linguists operate on secure, role-restricted infrastructure, and project files are permanently purged following delivery and client sign-off.