Best Video Translation API: Features That Matter & Why Dubly Stands Out

Why Use a Video Translation API?

Modern content teams deal with:

• Large libraries of videos across platforms
  
• Ongoing content creation cycles
  
• Multilingual audiences
  
• Custom tech stacks (CMS, DAM, LMS, etc.)
  

Manual uploads are not sustainable.
You need translation that’s fast, repeatable, and deeply integrated.
That’s where the API comes in.

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Key Features to Look for in a Video Translation API

1. Easy Integration

• REST API with full documentation
  
• Token-based authentication
  
• Webhooks for real-time status updates
  
• Sandbox environment for testing
  

Dubly offers a modern, well-documented REST API built for developers.

2. Flexible File Handling

• Accepts formats like MP4, MOV, ProRes
  
• Outputs available as MP4, WAV, SRT, and JSON
  
• Preserves original resolution and frame rate
  

Dubly delivers in full resolution, with optional ProRes exports on request.

3. Deep Translation Control

• Choose target languages
  
• Set number of speakers
  
• Enable or disable lip sync
  
• Apply custom glossaries for brand and product terms
  
• Inject tone/style instructions via custom prompts
  

Dubly’s API allows full editorial control – even programmatically.

4. Status Tracking & Delivery

• Track jobs by status (“queued”, “processing”, “done”)
  
• Get notified via webhook when files are ready
  
• Retrieve metadata: speaker mapping, timecodes, transcripts
  

Dubly supports polling and push workflows for full automation.

5. Built for Scale & Reliability

• Parallel processing for high throughput
  
• Batch/bulk processing support
  
• Monitoring tools available for high-volume clients
  

Whether you process 10 videos a week or 1,000, Dubly scales effortlessly.

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Why Dubly Is the Best Video Translation API

Dubly isn’t just another AI tool — it’s a full platform for scalable, high-quality video localization.

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✅ Studio-level voice & audio quality

✅ High-resolution lip sync that looks natural, even close-up

✅ API-based control over tone, glossary, speaker count, and output format

✅ Separate audio and video delivery for editing workflows

✅ GDPR-compliant data handling

✅ EU server storage, with US subprocessors only under Standard Contractual Clauses

✅ Developer support & enterprise onboarding available

Real-World Use Case: How a Global Agency Uses Dubly’s API

A leading European agency group handles campaign videos for an international retailer.

Before Dubly:

• Manual translation of 3–4 languages per video
  
• Voiceovers only, no lip sync
  
• Weeks of delay per rollout
  

With Dubly’s API:

• 20+ videos per week translated into 15 languages
  
• Fully automated via API: upload → translation → lip sync → download
  
• All brand language is enforced via custom glossaries
  
• Translated clips are delivered back in ProRes HQ + WAV
  
• QA team reviews final videos in Dubly’s UI before publishing
  

Results:

• Cut turnaround time by 70%
  
• Scaled multilingual content x5
  
• Dramatically improved localization quality

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