AI Video Resizer - Change Video Dimensions & Aspect Ratio Online
Professional video resizer for Instagram, TikTok, and YouTube. AI-powered smart cropping keeps subjects perfectly centered. No watermark, instant processing.
Reframe Video
Instantly reframe any video for TikTok, YouTube Shorts, and Instagram Reels. Our AI intelligently converts aspect ratios and expands frames to keep your content perfectly centered. Maximum video length: 30 seconds.
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What is Video Resizing?
Video resizing is the process of changing video dimensions and aspect ratios to fit different platforms and screens. Our AI video resizer uses advanced algorithms to intelligently resize video content, automatically detecting important subjects and keeping them centered. Whether you need to resize video for Instagram Stories (9:16), YouTube videos (16:9), or square posts (1:1), our online video resizer handles it seamlessly.
"Transform horizontal videos into vertical format for TikTok and Instagram Reels. Our video resizer online free tool uses AI to track subjects and maintain perfect framing throughout your video, ensuring professional results every time."
Unlike basic cropping tools, our smart video resizer analyzes your content frame by frame, identifying key subjects and action areas. This intelligent approach ensures that when you resize video online, important content stays in frame. Our tool preserves video quality while intelligently reframing your content for any social media platform.
Why Choose Our Video Resizer Online
Resize for Social Media
Instantly resize video for Instagram, TikTok, YouTube Shorts. Our video resizer supports all social media aspect ratios and dimensions.
Change Aspect Ratio
Convert between 16:9, 9:16, 1:1, 4:3, and more. Our aspect ratio converter maintains video quality while resizing.
Fast & Efficient
Instant video processing with AI acceleration. Our cloud-based resizer works directly in your browser.
No Watermark
Resize video online free without watermark. Download clean, professional videos ready for sharing.
How to Resize Videos Online - Simple 3-Step Process
Upload Your Video
Upload any video file or paste a video URL to our video resizer. We support MP4, MOV, WebM, and all major formats. Maximum video length is 30 seconds.
Select Target Aspect Ratio
Choose your desired aspect ratio - 9:16 for TikTok/Instagram Reels, 16:9 for YouTube, 1:1 for Instagram posts. Our video resizer AI automatically frames your content.
Download Resized Video
Click resize and our AI processes your video instantly. Download your perfectly resized video with no watermark, ready for upload to any platform.
Video Resizing Use Cases
Discover how creators use our online video resizer to optimize content for every platform
Instagram & TikTok Videos
Resize video for Instagram Reels and TikTok with perfect 9:16 vertical format. Our video resizer ensures your content fills the entire screen for maximum engagement.
YouTube Content
Convert vertical videos to 16:9 widescreen for YouTube. Resize video online to create YouTube Shorts from regular videos or adapt content across formats.
Professional Production
Use our video resizer for professional projects. Change video dimensions for presentations, websites, digital signage, and broadcast requirements.
E-commerce Videos
Resize product videos for different marketplace requirements. Our video resizer online free tool helps optimize videos for Amazon, Shopify, and social commerce.
Advanced Video Resizing Technology
AI-Powered Smart Cropping
Our video resizer uses artificial intelligence to detect and track subjects automatically. When you resize video online, the AI ensures important content stays centered and in frame throughout the entire video. Perfect for converting landscape videos to portrait format.
Multiple Format Support
Resize MP4 videos and other formats including MOV, WebM, AVI, and MKV. Our online video resizer handles codec conversion automatically, ensuring compatibility across all devices and platforms. Export in the format you need.
Fast Processing Speed
Experience quick video resizing with our cloud-powered infrastructure. Most videos are processed in just 2-5 minutes, allowing you to resize and share your content quickly across all your social media channels.
Frequently Asked Questions About Video Resizing
How does the video resizer pricing work?
New users receive free credits to try our video resizer. You can resize videos up to 30 seconds using credits. Our professional plans offer more credits for regular use, with all videos produced without watermarks.
What aspect ratios can I resize videos to?
Our video resizer supports all popular aspect ratios: 16:9 (YouTube), 9:16 (TikTok/Reels), 1:1 (Instagram Square), 4:3 (Standard), 3:4 (Portrait), 21:9 (Cinematic), and 9:21 (Vertical Ultra-wide). Perfect for any social media platform.
How long does video resizing take?
Our online video resizer processes most videos in 2-5 minutes. Processing time depends on video length and server load. The AI-powered resizing ensures optimal quality while maintaining fast processing speeds.
Can I resize MP4 videos specifically?
Absolutely! Our tool specializes in MP4 resizing along with other formats. Simply upload your MP4 file, select your target aspect ratio, and download the resized MP4 video. The video resizer maintains quality during conversion.
Does resizing reduce video quality?
Our AI video resizer maintains maximum quality during resizing. While changing aspect ratios may crop some content, the AI intelligently selects the most important parts to keep in frame. Video resolution and clarity remain unchanged.
What's the difference between resizing and upscaling?
Video resizing changes dimensions and aspect ratios (like 16:9 to 9:16), while upscaling increases resolution (like 720p to 1080p). Our video resizer focuses on dimension changes for different platforms, maintaining your original resolution quality.
Start Resizing Videos with AI Today
Join thousands of content creators using our professional AI video resizer to optimize videos for every platform. No watermark, instant results.