FIXmy Video For AI
Fix video upload errors for Runway, Kling, Seedance, and more. 100% private, runs directly inside your browser.
Why Do AI Video Uploads Fail?
Footage from iPhones or Androids often fails when uploaded to Runway, Kling, Gemini Omni Flash, Seedance, and other AI models due to codec, duration, size, or format mismatches.
Upload Failed
Unsupported Video Codec / Container
HEVC(H.265) Not Supported
Min 3-5 sec required
MP4 (H.264) Recommended
Exceeds Size Limits
Free online tool that automatically fixes AI video upload issues.
Why Do AI Video Uploads Fail?
Drag and drop or browse to select the video file you want to convert.
Our engine inspects codec, resolution, duration, and framerate in real time.
Instantly convert and download video tailored to your chosen AI platform.
Download the fully compliant, error-free video and upload to your AI tool.
Fit Your AI Shot Right Back Into the Timeline
Designed for creators who need to drop AI footage right back into their edit timeline. If you just need to fix upload errors, the converter above is all you need!
Why doesn’t an AI video fit the timeline if you upload it as is?
AI video platforms only work in whole seconds (like 4s or 5s), not exact decimals like 4.5s. If you upload a 4.5s cut, the platform decides on its own whether to cut it to 4s or stretch it to 5s—without telling you what it did.
Either way, you have to hunt down how many frames slipped out of sync by hand to fit the cut back in. If you have dozens of shots, this tedious work really piles up.
Send as Whole Seconds, Then Bring Back the Original Length
Instead of leaving the duration to the AI platform, we set it upfront so we can restore the returned clip back to its exact original length.
Pad to Whole Seconds
Extend a 4.5s cut to exactly 5.0s before sending. Just choose the duration in our converter and it adjusts automatically.
Generate in AI
Because the AI receives an exact 5.0s clip from the start, there is no guessing or rounding—the result comes back at a clean 5.0s.
Restore Original Length
Put the original video and AI result together, and it brings it back to the exact original 4.5s · 108 frames. The visual quality stays 100% untouched.
Drops right back into the original cut slot with frame-by-frame accuracy.
There Are Two Ways to Extend Your Video
Step 3 restoration will automatically reverse whichever method you chose in Step 1.
Hold Last Frame
RecommendedKeeps the original untouched and adds a 0.5s freeze of the last frame to the end. During restoration, only the frozen tail is trimmed off.
Adjust Playback Speed
Plays the whole video slightly slower to reach 5.0s. Restoration returns it right back to normal speed.
Good to know.Duration and frame count are restored with pinpoint precision, but camera framing or subject changes made by AI remain as generated. Please do a quick check in your final edit.
Official Upload Specs for Top Generative AI Video Tools
Compiled and verified with official guidelines and real-world testing data.
| AI Platform | Supported Formats | Recommended Codec | Min Duration | Max Duration | Recommended FPS | Max Size | Notes |
|---|---|---|---|---|---|---|---|
| RRunway (Edit Studio) | MP4, MOV, WebM | H.264, HEVC, AV1 (Officially supported) | 2s | 30s | 24~30 FPS (Rec.) | Unspecified | H.264, H.265(HEVC), AV1 all supported |
| KKling Omni | MP4, MOV | H.264, HEVC, AV1 (No limits) | 3s | 10s | 24~30 FPS (Rec.) | < 200MB | No codec limits (H.264, HEVC, AV1), 3~10s, <200MB |
| GGemini Omni Flash | MP4 | H.264 (Rec.) | 3s | 10s | 24~30 FPS (Rec.) | Unspecified | Edit/extend ≤10s, references ≤3s each |
| SSeedance | MP4, MOV | H.264, H.265 | 2s | 15s | 24~30 FPS (Rec.) | 50MB | H.264, H.265(HEVC), MP4/MOV supported |
| MMiniMax H3 (Hailuo) | MP4, MOV | H.264, H.265 | 2s | 15s | 24 FPS (Rec.) 23.976~60 FPS | < 50MB | 768p or 2K, whole seconds |
| WWan | MP4, MOV | H.264, H.265 | 2s | 10s | 30 FPS (Rec.) 24~30 FPS | < 100MB | H.264 & H.265(HEVC), original audio kept |
| PPixVerse | MP4, MOV | H.264 | 4s | 16s | 30 FPS (Rec.) 24~30 FPS | < 50MB | Max 1920×1080 (any orientation) |
| VVidu (Q2 Pro) | MP4 | H.264 | 1s | 8s | 24 FPS Fixed CFR | < 50MB | 1–8s (≤5s each when using 2 clips), ≤1080p, aspect ratio 1:4–4:1 |
| HHiggsfield | MP4 | H.264 | 4s | 15s | 30 FPS Fixed CFR | Unspecified | 4–15s safe for all Higgsfield tools |
| PPika | MP4 | H.264 | 3s | 10s | 30 FPS Fixed CFR | < 50MB | Output is exactly 5s or 10s — trim input to match |
| LLuma Dream Machine | MP4 | H.264 | 3s | 10s | 24 FPS Fixed CFR | < 100MB | Modify Video: ≤10s, 24 FPS, original audio kept |
Universal AI Video Safe Preset
Universal H.264 / CFR preset compatible with almost all AI video tools
When specifications are unstated or errors occur, using this universal safe preset is the most reliable choice.
Frequently Asked Questions (FAQ)
Quick answers to everything you need to know about FixMyVideoForAI.