← Back to blog · 5 min read · Published 2026-02-20 · Updated 2026-04-20 · By Flik AI
How to Add AI Sound Effects to Video with Mirelo 1.5
Generate custom foley, ambient audio, and SFX from text prompts — pair with any AI video clip for broadcast-ready audio.
AI video with native audio (Veo 3.1, Kling 3.0 Pro) sounds good. AI video with layered custom sound effects sounds cinematic. Mirelo 1.5 generates bespoke foley, ambient beds, and impact SFX from text prompts — here's how to integrate it into your Flik AI productions.
What Mirelo 1.5 generates
- Foley — footfalls, doors opening, fabric rustles, object impacts
- Ambient beds — city traffic, rainforest, café buzz, ocean waves
- Impact hits — gunshots, explosions, crashes, punches
- Cinematic stingers — risers, whooshes, title reveals, drops
- Creature sounds — animal roars, mechanical growls, alien vocalizations
- Environmental textures — wind through trees, fire crackling, machinery humming
Two generation modes
Mirelo 1.5 generation modes| Mode | Input | Output | Cost |
|---|
| Flat SFX | Text prompt only | Single audio file (typical 3–10 seconds) | ~$0.10 flat per generation |
| Video-synced SFX | Text prompt + video clip | Audio track synced to video motion | ~$0.01 per second of video |
Workflow: adding SFX to an AI-generated commercial
- Generate the video with Kling 3.0 Pro or Veo 3.1 as usual
- Identify beats that need SFX — product reveal, impact moment, transition
- Upload the video clip to Flik AI, pick Mirelo 1.5 in video-synced mode
- Write the SFX prompt: "Dramatic cinematic whoosh at 3 seconds, subtle product-reveal chime at 6 seconds, soft ambient background throughout"
- Generate — Mirelo returns an SFX track aligned to the video timeline
- Mix with the existing native audio in your NLE (keep voiceover on top, SFX layer underneath)
Prompting tips
- Specify the sound's physicality — "glass shattering on concrete" is more specific than "glass breaking"
- Add scale cues — "distant thunder" vs "close thunder" produces different output
- Describe emotional intent — "threatening low-frequency rumble" vs "warm humming"
- For ambient beds, specify duration and evolution — "30-second ambient city bed, transitions from day to night around the 15-second mark"
For the Mirelo 1.5 marketing page, see /mirelo-1-5. For music rather than SFX, see /blog/suno-5-music-generation. For voiceover narration, see /blog/elevenlabs-3-voice-cloning.
Tags: sound effects mirelo audio how-to
Frequently asked questions
What's the difference between Mirelo 1.5 and Suno 5.0?
Suno 5.0 generates music — full arrangements with melody, harmony, and rhythm. Mirelo 1.5 generates sound effects — foley, ambient beds, impact hits, stingers. Different tools for different audio needs. Use both in the same project for full sound design.
Can Mirelo 1.5 sync SFX to video timing automatically?
Yes — in video-synced mode, upload the video clip and Mirelo generates audio aligned to the video's motion and beats. Describe timing in the prompt ("impact hit at 3 seconds") for precise sync control.
Can I use Mirelo SFX commercially?
Yes on Flik AI's paid plans. Mirelo 1.5 output is cleared for commercial use subject to the underlying provider's acceptable-use policy. Keep generation receipts for any licensing audits.
How much does Mirelo 1.5 cost per SFX?
~$0.10 flat per generation for standalone SFX, or ~$0.01 per second of video for video-synced SFX. For a 30-second commercial with layered SFX throughout, budget approximately $0.30 in Mirelo costs.
Related posts
- Suno 5.0 Music Generation: The 2026 Complete Guide — Suno 5.0 generates original music in any genre, with or without vocals, at ~$0.06 per track. Here's the complete 2026 guide — prompting, scoring AI videos, and Flik AI integration.
- ElevenLabs 3.0 Voice Cloning: The 2026 Complete Guide — ElevenLabs 3.0 clones voices from short audio samples, generates narration across 40+ languages, and controls emotion via prompt direction. Here's the complete 2026 workflow.
- How to Make an AI Commercial in 10 Minutes (2026 Workflow) — Brief to finished 30-second commercial in 10 minutes using Flik AI's Agent mode. Four frontier video models, AI music, AI narration — ready to run on Meta, TikTok, YouTube, or CTV.
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