Crafting Eye-Catching AI Videos for Social Media
Skip generic prompts. Match models like Kling 3.0 and Veo 3.1 to platform specs, layer audio early, and measure retention at the 3-second mark for videos that perform.
TL;DR
The misconception that any prompt works leads to low retention. Use platform-specific durations, aspect ratios, and models such as Seedance 2.0 for 8-second 9:16 clips. Test one variable at a time and check viewer hold past three seconds.
The Common Mistake
Many creators assume any text prompt fed into an AI video tool will produce shareable results. This view falls short because platform algorithms reward specific formats, lengths, and pacing.
Why Generic Prompts Fall Short
A broad prompt like "fun video" yields inconsistent output across models. Seedance 2.0 expects motion descriptions under 8 seconds for TikTok clips. Kling 3.0 handles 1080p at 24 fps but clips at 6-second limits on Instagram Reels. Veo 3.1 adds camera moves when the prompt lists pan or zoom values. Sora 2 requires explicit aspect ratios like 9:16 to avoid cropping.
Pick Models by Platform Specs
Match the model to the target feed first. Shorts under 15 seconds work best with Shorts Generator paired to Nano Banana Pro for quick 720p renders. Longer narrative pieces use Text to Video with Wan 2.7 at 4K and 30 fps. Reference images improve consistency when the source file stays under 2 MB.
Model Comparison Table
| Model | Max Duration | Preferred Aspect | Credit Cost (example) | Best For |
|---|---|---|---|---|
| Seedance 2.0 | 8s | 9:16 | 12 | TikTok hooks |
| Kling 3.0 | 6s | 1:1 | 18 | Reels loops |
| Veo 3.1 | 10s | 16:9 | 22 | YouTube shorts |
| Sora 2 | 12s | 9:16 | 25 | Story arcs |
Build Prompts That Match Feed Rules
Start with the end frame in mind. Write the subject, action, and camera path in one sentence. Add timing offsets such as "cut at 3s to close-up." Run the same prompt through Image to Video to test motion. If the output drifts, add a reference frame from First to Last Frame.
Layer Audio and Captions Early
Generate music first at 15-second loops using Music Generation. Sync voice lines with Lip Sync Video at 48 kHz sample rate. Export captions via Auto Captions set to 24-point bold for mobile viewing. Test the full clip on a 6-inch screen before final export.
Measure Success with Platform Data
Track views at the 3-second mark. Clips that hold 60 percent of viewers past that point keep the same prompt structure for the next batch. Adjust only one variable per test round, such as motion speed or color grade.
How to Know the Approach Works
Output files show clean edges at platform dimensions, hold viewer attention past the first loop, and require under three prompt tweaks per video. Apply the same workflow next time at Text to Video.
FAQ
What aspect ratio works best for TikTok with AI tools? 9:16 at 1080x1920 keeps the full frame without letterboxing on mobile feeds.
How many seconds should a Reel stay under to retain attention? Keep core action inside 6 seconds when using Kling 3.0 so the loop feels instant.
Does adding music change credit use on Flixly? Music adds a flat 5 credits per 15-second clip regardless of video length.
Can I reuse the same character across multiple videos? Yes, upload a 512x512 reference image once and apply it in every generation with Reference to Video.
What file format does Flixly export for direct upload? MP4 H.264 at 30 fps matches every major platform upload spec without re-encoding.
How do I test caption readability before posting? Render at 720p and view the preview on a phone held at arm's length.
Frequently Asked Questions
What aspect ratio works best for TikTok with AI tools?▾
9:16 at 1080x1920 keeps the full frame without letterboxing on mobile feeds.
How many seconds should a Reel stay under to retain attention?▾
Keep core action inside 6 seconds when using Kling 3.0 so the loop feels instant.
Does adding music change credit use on Flixly?▾
Music adds a flat 5 credits per 15-second clip regardless of video length.
Can I reuse the same character across multiple videos?▾
Yes, upload a 512x512 reference image once and apply it in every generation with Reference to Video.
What file format does Flixly export for direct upload?▾
MP4 H.264 at 30 fps matches every major platform upload spec without re-encoding.
How do I test caption readability before posting?▾
Render at 720p and view the preview on a phone held at arm's length.
