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Documentation Index

Fetch the complete documentation index at: https://nexrender.com/docs/llms.txt

Use this file to discover all available pages before exploring further.

This section showcases technical patterns and workflows that help you scale Nexrender Cloud for real-world automation tasks — from batch rendering to personalized voiceovers.

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1. Batch Rendering at Scale

If you need to render hundreds or thousands of video variants (e.g. for product catalogs, event invites, or localized ads), use this workflow.

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Step-by-Step

  1. Prepare a .aep or .mogrt template with dynamic layers (text, images, audio)
  2. Create a CSV, JSON, or database table with per-job data:
[
  { "name": "Alice", "city": "Berlin" },
  { "name": "Bob", "city": "London" }
]
  1. Write a script (Node.js or Python) to loop through records and:
    • POST a new job using the API
    • Replace layer values using the assets array

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Example Job Payload

{
  "template": {
    "id": "TEMPLATE_ID",
    "composition": "main"
  },
  "assets": [
    {
      "type": "data",
      "layerName": "title",
      "property": "Source Text",
      "value": "Welcome Alice from Berlin!"
    }
  ],
  "webhook": { "url": "https://yourapi.com/status", "method": "POST" }
}

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Tips

  • Throttle job creation (60/min max)
  • Use tags or metadata to group related jobs
  • Poll status or use webhooks to track completion

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2. Adding TTS Voiceovers

You can dynamically synthesize speech and inject audio into a composition layer.

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Steps

  1. Generate speech using an API like ElevenLabs or Google Cloud TTS
  2. Store the audio file on a public or whitelisted URL
  3. Add it as an audio asset in the job payload
{
  "type": "audio",
  "src": "https://yourcdn.com/tts/voice1.mp3",
  "layerName": "Voiceover"
}

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Tips

  • Sync duration and placement inside AE composition
  • Use TTS engine options to vary pitch/speed
  • Pre-generate and cache audio where possible

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3. Personalized Titles and Text

Use asset injection to modify text dynamically per job.

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Example Asset

{
  "type": "data",
  "layerName": "subtitle",
  "property": "Source Text",
  "value": "Your 2024 Recap is Ready!"
}

​
Tips

  • Use clear layerNames in your AE project
  • Wrap expressions in AE to handle empty values:
value !== "" ? value : "Default Text"
  • Use preview mode during development
  • Fonts must be preloaded via Fonts API

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Combine Them

You can combine all three patterns — injecting TTS, custom images, and batch metadata — to create:
  • Automated onboarding videos
  • Personalized wrap-ups or recaps
  • Multilingual social content
Next: ➡️ Creating Jobs →
➡️ Uploading Fonts →
➡️ Handle Webhooks →