Professional Subtitling

Professional subtitling for videos, e-learning courses, social media content and multimedia productions, in multiple languages.

SERVICE

What is professional subtitling?

Subtitling is the synchronized transcription and translation of spoken dialogue into on-screen text. It extends far beyond basic audio transcription: each subtitle frame must adhere to strict technical guidelines covering timecodes, line lengths, screen placement, and reading speed metrics (Characters Per Second – CPS and Words Per Minute – WPM).

Professional subtitles allow viewers to absorb content seamlessly without losing critical narrative details, keeping text aligned with speech patterns and visual cues.

Polyline Translations manages end-to-end subtitling projects for corporate clients, production houses, training institutions, and digital platforms, delivering both standalone subtitle files and hardcoded video exports.

When You Need Subtitling

Corporate and institutional videos for multilingual distribution
E-learning courses and training content
Webinars and event recordings
Social media content for YouTube, LinkedIn, Instagram, and TikTok
Feature films, documentaries, and short films
Commercials and promotional videos
Content for streaming platforms
Videos requiring accessibility options for the deaf and hard of hearing

Types of Subtitling

Intralingual Subtitling

Spoken dialogue is transcribed within the same language as the video. Recommended for improving content accessibility or for videos where audio clarity may be compromised.

Interlingual Subtitling

Spoken dialogue is translated into one or more foreign languages. Designed for videos targeting international audiences and global markets.

SDH Subtitles (Subtitles for the Deaf and Hard of Hearing)

An accessible subtitling option that incorporates non-speech elements such as sound effects, speaker identification, and audio cues essential for understanding the audiovisual context.

Social Media Subtitles

Formatting optimized specifically for mobile viewing, where videos are frequently consumed with the sound off. Text is structured around strict character constraints, reading speeds, and maximum visual legibility.

Need subtitling for your videos or courses?

Send us your media files or links, specifying the source language and target language(s). We will evaluate your project requirements and provide a tailored quote.

How the subtitling service works

1. Media Intake

Send us your video files or hosting platform links (such as YouTube, Vimeo, Google Drive, or Dropbox). If available, providing the original transcript or script will help streamline project execution.

2. Transcription & Timing

Spoken dialogue is transcribed and synchronized with the audio and visual track. Each subtitle frame is structured in accordance with strict character limits, reading speeds, and legibility standards.

3. Translation (If Applicable)

For interlingual subtitling, the text is translated by a native-speaking linguist with domain-specific expertise tailored to your industry and content type.

4. Quality Assurance & Review

We verify synchronization, legibility, terminology consistency, and linguistic accuracy. All quality checks are conducted directly in context with the visual track.

Available Languages

We offer subtitling services in various language combinations, including English, French, German, Spanish, Portuguese, Dutch, Russian, Polish, Arabic, Chinese, Japanese, Romanian, Albanian and other languages. Contact us to verify availability of the required language combination.

Supporting businesses, professionals, and institutions since 2006.