🧠 Guidelines for Creating Effective Dynamic Videos (and How Minute Usage Works)
When creating dynamic videos in Sendspark using AI voice cloning, it’s important to provide enough input for the AI to work with.
If the video is too short (under 5 seconds), the AI will likely fail to generate a natural-sounding voice because there simply isn’t enough voice input.
🎯 Why We Recommend a Minimum of 10 Seconds
To ensure the best possible result, we recommend that dynamic videos be at least 10 seconds long.
This gives the AI enough audio to generate a natural-sounding voice and keeps the video from sounding abrupt or “robotic.”
Videos shorter than 10 seconds are prone to quality issues, and videos under 5 seconds often fail completely.
🧩 Want to Save Minutes? Use Combined Videos
If you’re trying to save DVM minutes, here’s the recommended approach:
Feature | Uses Dynamic Video Minutes | Recommendation |
Dynamic Video | ✅ Yes | Minimum suggested length: 10 seconds |
Combined Video | ❌ No | Use this for the rest of the message |
Suggested Workflow
Record the dynamic, personalized portion of the video (≥ 10 seconds).
Add a combined video (regular/static video) to extend the total playback time — this does not consume DVM minutes.
FAQ: “If the variable is just a one-second greeting (‘Hey {{First Name}}’), am I only charged one second?”
No — the entire length of the dynamic video counts toward your DVM usage.
So if your dynamic video is 12 seconds long and the personalized variable is only 1 second of that, you will still be charged 12 seconds.