PixVerse Video Upload Failed? Specs for Modify, Restyle, Extend and Swap
PixVerse accepts MP4 or MOV up to 1920px per side, but each video tool has its own length and size limit. Keep clips at 16 seconds and 50MB or less and they work in every PixVerse video feature.
Why won't PixVerse accept my video?
PixVerse has several tools that start from your own video: Modify changes part of a scene, Restyle changes the whole look, Extend continues the shot, and Swap replaces a subject. They share the same upload system, but each one has its own limits, so a clip that works in one tool can be refused in another.
Two rules apply everywhere: MP4 or MOV, and no side of the frame larger than 1920 pixels. Length and file size depend on the tool. Restyle stops at 16 seconds, the others at 30 seconds, and most tools take 50MB while Modify takes up to 100MB.
PixVerse input video limits
MP4 or MOV, each side up to 1920px. Restyle: up to 16 seconds and 50MB. Extend and Swap: up to 30 seconds and 50MB. Modify: up to 30 seconds and 100MB. A clip of 16 seconds or less and 50MB or less works in every tool.
4K is refused, vertical 1080p is fine
PixVerse caps each side of the frame at 1920 pixels. UHD 4K (3840×2160) is twice that width, so it is refused no matter how small the file is. Vertical 1080p (1080×1920) is fine because its longest side is exactly 1920. If you shoot in 4K, scale it so the longest side is 1920px before uploading.
One clip for every tool: 16 seconds and 50MB
Because Restyle has the shortest limit and most tools share the 50MB size limit, a clip of 16 seconds or less and 50MB or less is accepted by Modify, Restyle, Extend and Swap. If you plan to try the same shot in several tools, prepare it once to these limits instead of re-exporting for each one.
Extend returns 5 or 8 seconds, and 8 seconds is not available at 1080p
Extend adds either 5 or 8 seconds of new footage. The 8-second option is not available at 1080p, and the fast motion mode only allows 5 seconds and does not support 1080p either. If you need 1080p, plan for 5-second extensions. If you need the longer 8-second extension, choose 720p.
Swap outputs up to 720p and needs a clear keyframe
Swap results come back at up to 720p, so there is no benefit to sending a high-resolution source for this tool. Swap works with PixVerse's own selection tool to mark the subject to replace on a chosen frame, called the keyframe, and the selection must come from that same frame. Pick a keyframe where the subject is sharp, well lit and not covered by anything, so the selection is clean.
Common reasons PixVerse rejects 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.
Preparing a video for PixVerse
Select PixVerse in FixMyVideoForAI and drop in your clip. The tool checks length, file size, resolution, frame rate and codec and shows exactly which items fail.
Converting re-encodes the clip to MP4 (H.264) at a constant frame rate, scales any side over 1920px down to fit, keeps the file under 50MB and trims it to 16 seconds or less at a whole number of seconds, so the same file works in every PixVerse video tool. Everything runs inside your browser, so your footage never leaves your computer.
Convert to Compliant Video Now (PixVerse)
Safely convert in your browser to MP4 + H.264 + CFR without software installation.
Frequently Asked Questions
Restyle accepts up to 16 seconds, while Modify accepts up to 30 seconds. Trim to 16 seconds or less to use it in both.