Gemini Omni Flash Video Upload Failed? Video Edit Input Limits & Fixes
Gemini Omni Flash edits and extends uploaded videos of 10 seconds or less. See why longer clips, extra reference clips and some regions fail, and how to prepare your footage.
Why won't Gemini Omni Flash accept my video?
Gemini Omni Flash is Google's video model in the Gemini app and the Gemini API. Besides generating clips from text or images, it can take a video you already have and edit it with a text instruction, extend it, or use short clips as references for a new generation.
Most upload problems come from one rule: an uploaded video used for editing or extension must be 10 seconds or less. Google also lists a few restrictions that look like upload errors but are really policy limits, so it helps to know both before you export.
Gemini Omni Flash input video limits
Edit and extend: one uploaded video, 10 seconds or less. Video references: up to 3 clips, 3 seconds or less each. The edited result keeps the input's aspect ratio and length. Audio in reference clips is ignored.
The 10-second limit is strict
A clip that reads as 10 seconds in your editor is often 10.03 or 10.2 seconds after export, because of extra frames at the end or audio that runs slightly longer than the picture. That is enough to be refused. Trim to a whole number of seconds, such as 8 or 10, and check the exact duration of the exported file rather than the rounded number your editor shows.
Reference clips are only 3 seconds each
When you use videos as references for a new generation, Gemini Omni Flash accepts up to three clips, and each one must be 3 seconds or less. Pick the 3-second section that shows the motion or subject you care about. Audio in a reference clip is ignored, and Google notes that reasoning across several videos is not supported, so do not expect the model to merge actions from different clips.
Edits keep your framing and length
An edited video inherits the source's dimensions and running time. That means the source should already look the way you want the result to look: 16:9 or 9:16, stable and well lit. Google and API providers point out that motion blur and low light cause frame-to-frame drift in the edit, so stabilise and colour-grade the clip before uploading if you can.
Limits that look like upload errors
Editing or extending uploaded videos is not available in the European Economic Area, Switzerland or the UK. You also cannot extend an uploaded video of someone talking to add new dialogue, voice editing is not supported, and editing videos of certain recognisable people is blocked. Converting the file will not change any of these, so check them first if a perfectly valid file is still refused.
Extending a shot
Extension only adds footage to the end of a clip, 3 to 10 seconds at a time, up to about 40 seconds in total. You cannot add frames before the clip or in the middle. If you are working to an edit, note the original clip's exact frame count before extending so you can cut the result back into your timeline at the right point.
Common reasons Gemini Omni Flash refuses a video
AI video encoders require strict video specifications in browser and cloud AI server environments. Upload errors typically occur due to the reasons below.
Prepare your video for Gemini Omni Flash
Trim the clip to 10 seconds or less, ideally a whole number of seconds, and keep reference clips to 3 seconds. Convert to MP4 with H.264 video and a constant frame rate, in 16:9 or 9:16.
1080p is plenty: Gemini Omni Flash renders at 720p by default, so uploading 4K only makes the file bigger. FixMyVideoForAI does all of this inside your browser without uploading your video anywhere.
Convert to Compliant Video Now (Gemini Omni Flash)
Safely convert in your browser to MP4 + H.264 + CFR without software installation.
Frequently Asked Questions
Exported files are often slightly longer than 10 seconds because of extra frames or a longer audio track. Trim to exactly 10 seconds or less and check the real duration of the file.