How to Brief a Multilingual Voice Over Project: A Step-by-Step Guide

Key Takeaways

• A timed script is the single most important document in a multilingual voice over project. Without it, recordings in languages like German or French will run over the video's duration.
• Specifying the target region matters as much as the target language. Spanish for Spain and Spanish for Mexico require different translators and different voice artists.
• Voice artist selection should consider tone, gender, age, and accent before recording begins, not after.
• The brief should be agreed before translation starts, not partway through the project.
• Working with one partner for translation and recording removes coordination risk between two separate suppliers.

A multilingual voice over project involves more moving parts than most clients expect. Script translation, timing, casting, studio recording, audio editing, and file delivery all need to work together. When any part of the brief is incomplete or unclear, the problems surface during recording, which is the most expensive and time-consuming stage to fix.

This guide covers what to include in a voice over brief, what to agree before the project starts, and the common mistakes that cause delays.

Why the Brief Matters More Than You Think

A monolingual voice over project has one script, one language, and one voice artist. The brief is straightforward.

A multilingual voice over project multiplies each of those. Five target languages means five translated scripts, five sets of timing checks, five casting decisions, and five separate recording sessions. An incomplete or ambiguous brief produces five sets of problems, all at different stages.

Getting the brief right before work begins is not just good practice. It is the difference between a project that delivers on time and one that requires costly re-recording.

Step 1: Define the Target Markets, Not Just the Languages

The first mistake in a multilingual voice over brief is specifying languages without specifying regions.

Spanish is spoken by over 480 million people across more than 20 countries, and the vocabulary, accent, and tone differ significantly between Spain, Mexico, Argentina, and Colombia. French for France and French for Canada (Quebec) require different translators and different voice artists. Arabic has several regional dialects, including Modern Standard Arabic, Gulf, Egyptian, and Levantine, each of which carries different connotations depending on the audience.

Your brief should specify the target market for each language, not just the language name. This determines which translator is assigned, which accent the voice artist uses, and which regional conventions are applied to the script.

Step 2: Prepare a Timed Script

The timed script is the most important document in a multilingual voice over project, and the most commonly missing one.

A timed script includes a timestamp for every sentence or section, showing when it starts and how long it runs in the video. This information serves two purposes:

First, it tells the translator how much space they have. Translating from English into European languages typically produces a longer text. According to W3C's published guidelines (sourced from IBM's translation research), Spanish and French translations of English text run approximately 20-25% longer than the source, according to Eriksen Translations. Without timing information, translators cannot sense-check whether their translation will fit within the available audio window. The result is a recording that overruns the video.

Second, it allows the voice studio to edit recordings to match the video. Without timestamps, editors are guessing, and the synchronisation between audio and video suffers.

A timed script does not need to be complicated. A simple table with sentence text, start time, and end time for each section is enough. Your video editor or production team should be able to export this from any editing software.

Step 3: Agree the Voice Artist Profile Before Casting Begins

Voice artist selection is not a detail to leave until recording day. The right brief specifies:

Tone: Is the content authoritative, friendly, instructional, or conversational? A health and safety video for a manufacturing workforce needs a different tone to a consumer marketing campaign.

Gender: Does your content suit a male or female voice, or do you need both? Some content types work better with a specific gender in the target market.

Age: A young, energetic voice works for some campaigns. A measured, experienced voice works better for medical or technical content.

Accent: For languages with significant regional variation, the specific accent matters. A Gulf Arabic accent is the right choice for some markets; Egyptian Arabic is more widely understood across the Arab world.

A reputable voice over supplier will provide sample recordings for approval before the session is booked. Build time for this into your project timeline.

Step 4: Flag Technically Complex Content

If your script contains technical terminology, regulatory language, or subject-matter-specific vocabulary, flag this in the brief before translation begins.

Technical content requires translators with relevant subject knowledge, not just language fluency. A user guide for industrial machinery, a pharmaceutical product explainer, or a financial services compliance video all need translators who understand the source material well enough to produce an accurate translation, not just a grammatically correct one.

The same applies to voice artists. A voice artist reading a medical script for the first time in a recording session will stumble on unfamiliar terminology. A specialist medical voice artist will not.

If your content is technical, specify this in the brief and ask your supplier how they select translators and voice artists for specialist subject matter.

Step 5: Confirm System or Platform Requirements

If the multilingual voice overs are destined for an e-learning platform, an IVR telephone system, or any other technical environment, confirm the platform requirements before recording begins.

IVR systems in particular can create problems if not accounted for in advance. Some languages have grammatical structures where verbs appear at the end of sentences. If an IVR system constructs prompts dynamically by combining pre-recorded phrases, a language that structures sentences differently from English can cause the prompts to break or become confusing.

E-learning platforms may have specific audio format requirements, file size limits, or metadata standards. Delivering audio in the wrong format after recording is avoidable with a five-minute check before the project starts.

Confirm with your supplier: the file formats required for delivery (WAV, MP3, or other), any bit rate or sample rate specifications, and whether the recordings need to be split into individual files by section or delivered as a single file per language.

Step 6: Set a Realistic Timeline

Multilingual voice over projects take longer than clients typically expect, particularly when multiple languages are involved simultaneously.

A realistic timeline for a standard project includes: script preparation and timing (1-2 days), translation and proofreading (3-5 working days per language, often run in parallel), voice artist selection and sample approval (2-3 days), recording (1 day per language for a standard-length script), audio editing and synchronisation (2-3 days), and final review and delivery.

For a five-language project run in parallel, a realistic end-to-end timeline is typically 3 to 4 weeks from a complete brief. Projects that start without a timed script or with an incomplete brief take longer at every stage.

What to Include in Your Brief: A Checklist

• Target markets (language and region, not language alone)
• Timed script with timestamps for every section
• Source video file (or locked cut, if applicable)
• Voice artist preferences: tone, gender, age, accent
• Subject matter or technical context, if relevant
• Delivery format and any platform-specific requirements
• Review and approval process (who signs off on translation, who signs off on samples)
• Final deadline and any intermediate milestones

Working With One Supplier for Translation and Recording

Coordinating a separate translation agency and a separate voice studio is a common approach, and a common source of problems. When a translation arrives at the studio with timing issues, the studio cannot fix them. When a recording overruns because the translator was not given timing information, both suppliers blame each other.

Working with a single supplier who handles both translation and recording removes this coordination risk. The translation is produced with awareness of the timing constraints, the translator and voice artist work from the same brief, and there is one point of accountability if something needs to be corrected.

Global LTS handles multilingual voice over end to end: script translation by subject-specialist native-speaking translators, professional studio recording with hand-picked voice artists, audio editing, and delivery in your required format. Contact us to discuss your project.

Common Mistakes to Avoid

Providing a script without timestamps. The recording will overrun. Budget time for re-recording or re-editing.

Specifying a language without specifying a region. You will receive a translation that is correct for one market and wrong for another.

Leaving voice artist selection until the recording session. Casting decisions made under time pressure produce inconsistent results. Build time for sample approval into your timeline.

Using bilingual employees instead of professional translators and voice artists. A bilingual employee can check a translation but should not produce one for professional production. Voice recording requires a trained voice artist with studio experience, not a fluent speaker.

Starting with an unlocked script. If the script changes after translation begins, the translation changes too, and timing information becomes invalid. Lock the script before briefing the project.