Subtitling, dubbing and multimedia localization

Subtitling, captioning (including SDH), dubbing support, voiceover, audio description, metadata, DTP, and audio QC. For captions and media accessibility requirements: W3C, Web Content Accessibility Guidelines (WCAG) 2.2 (5 October 2023).

Fixed-window media sprint delivered through timing QC, linguistic review, metadata checks, and client delivery closure.

Service details

Multimedia Services Fixed-window media sprint delivered through timing QC, linguistic review, metadata checks, and client delivery closure.
Typical inputs
Video, audio, scripts, subtitle files, metadata sheets, DTP assets
Controls
Timing QC, linguistic QC, format validation, native review, final media check
Best fit
OTT release windows, training video localization, multilingual media backlogs

When to use it

When subtitle timing, dubbing support, metadata, and language review have to land together.

Formats we handle

VideoFootage and subtitles
AudioSpeech and voiceover
TextDocuments, UI, copy
MetadataTags and taxonomy

Subtitles, audio and delivery files

Subtitles, dubbing support, metadata and quality checks are coordinated against the release schedule and the required delivery files.

Captions that follow the spoken words

Speech timing

Let’s take a closer look.

First phraseLet’s take

Second phrasea closer look.

Each phrase has its place in the recording.

Caption timing animation. No audio playback.

  1. 01

    Confirming source and delivery formats

    Runtime, file specifications and the required delivery package are agreed before language work begins. For one platform-specific example, Netflix timed-text delivery: Netflix, Timed Text Style Guide: General Requirements (accessed 16 October 2026).

  2. 02

    Reviewing language and timing

    Subtitle, metadata and synchronization checks run alongside the language review.

  3. 03

    Managing corrections

    Late corrections remain visible and versioned so the team can keep the final delivery files together.

  • Timing requirements available to the team
  • Metadata checked alongside the language
  • Final delivery files checked before handoff

Project requirements and deliverables

What we need from you, how the work is reviewed, and what you receive.

Typical inputsVideo, audio, scripts, subtitle files, metadata sheets, DTP assets
Review pathTiming QC, linguistic QC, format validation, native review, final media check
Strongest fitOTT release windows, training video localization, multilingual media backlogs
How the work runsLanguage-specific media pods with internal QA before client QA

Media quality is controlled through timing, language, and packaging together

Subtitle wording is only one risk. Sync drift, metadata mismatch, and final-file failure can break the release window.

Format

Runtime, file specs, and handoff rules are fixed before the work opens.

Timed text

Subtitle and metadata checks move with language review, not after it.

Sync QA

Audio, timing, and reading-speed issues are checked in the live lane.

Version

Corrections stay versioned so the release package does not fragment.

Package

Final files are checked as a release set, not as isolated pieces.

Delivery

The buyer receives a package ready for launch review, not reassembly.

Proof that matches multimedia services, not generic language work

Explore the project records for scope, review method and delivered results.

OTT rare-language sprint

The challenge. A streaming team needed subtitle, dubbing, and metadata work to land for a fixed release window.

What we did. MoniSa handled subtitles, dubbing support and metadata in parallel, checking timing and language before client handoff.

The result. The release package moved through timing, language, and metadata checks before client review.

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Interpreter deployment program

Problem. An interpretation platform needed live-session interpreters who could clear sourcing, assessment, onboarding, permissions, and deployment quickly.

Action. MoniSa ran a staged interpreter pipeline with compliance checks, platform onboarding, and monitored launch sessions.

Result. The platform received interpreters assessed and prepared for live assignments.

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Connect media localization to the launch and partner path

Media work often needs a broader localization program, a release-specific workflow, or white-label support behind the scenes.

Speech transcription

Agree speaker, timestamp and orthography rules before speech becomes source text for media.

Subtitling services

Scope subtitles, closed captions, or SDH against the platform specification the file has to meet.

LSP partner capacity

Add accountable rare-language capacity behind an existing client relationship.

Translation services

Set the linguistic base for scripts, subtitles, metadata, and supporting content.

Company-wide language coverage

Availability and specialist fit are confirmed for each project.

110,000+ native linguists and AI data contributors Founder-reported combined network · 4 Oct 2026
300+ languages across active service lines
4,500+ dialects and regional variants
1,000+ organizations served since 2015

Multimedia questions

Is a recorded minute the same as a finished minute?

No, and conflating them is one of the most common causes of a disputed media invoice. A recorded minute measures the source audio going in, which is how transcription is priced. A finished minute measures the media coming out, which is how voice-over, dubbing and subtitling are priced. An hour of raw interview footage and an hour of finished programme are different quantities of work, so confirm which unit a quote is built on before comparing two of them.

What does subtitle QC actually check beyond the translation?

Timing against speech onset, reading speed, line length and line count, where the break falls in the sentence, whether the subtitle sits over on-screen text, speaker identification, encoding, and conformance to the receiving platform format. A linguistically flawless file still fails delivery on any one of those, which is why format validation runs before a file is sent rather than after it comes back.

Do you do proper SDH, or captions with a different filename?

SDH is specified and checked as its own discipline. Beyond the dialogue it carries consistent speaker identification, described sound effects and music, and positioning that does not obscure on-screen text, against recognised accessibility standards. If a brief says captions when it means SDH, the difference shows up at platform QC rather than in the translation.

Will you send a voice sample before we discuss commercials?

Yes — for voice work a sample should come before a rate conversation, because casting is most of the decision. For rare languages availability is confirmed first and samples follow, since there is no point discussing a rate for a voice that cannot be booked. Where a brief specifies a talent configuration, a gender, an age range or a match to the source performance, that is treated as part of the specification rather than a preference.

What audio do you deliver, and to what specification?

To the receiving specification rather than a house default: container format, sample rate and bit depth, channel configuration, loudness consistency, and naming convention, with recordings checked for background noise, distortion, clipping and breath artefacts. Where a programme requires studio capture rather than a home setup, that is agreed up front because it changes both scheduling and cost, and discovering it at delivery helps nobody.

How do you handle a fixed launch window?

By removing the failure that actually breaks release dates, which is version drift rather than throughput — a file approved against one cut while production ships another. Locking the reference cut, or versioning every asset against a named one, prevents more launch failures than adding capacity does. Translation parallelises; review, mix and QC do not parallelise as cleanly, so real compression comes from removing serial dependencies rather than from adding people.

Send the media package with the timing rules already visible

The useful first brief for multimedia work shows runtime, file formats, subtitle or audio requirements, and final delivery rules.

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