Video Reframer - Upscale to 4K, Portrait to Landscape Converter
Reframe videos for social platforms. Upscale to 4K for better YouTube quality, or convert between portrait and landscape with blurred background fill.
Runs in your browser. No data leaves your device.
Frequently Asked Questions
Why upscale a video to 4K for YouTube?
YouTube assigns higher-quality codecs (VP9 or AV1) to 4K uploads. By upscaling a 1080p or 1440p video to 4K resolution, YouTube will encode it with a better codec, resulting in noticeably sharper playback even though the source material is lower resolution.
How does the blurred background mode work?
The tool creates a blurred, zoomed-in copy of your video as the background layer, then overlays your original video centered on top. This converts vertical phone videos to landscape format (or vice versa) without black bars, using a visually appealing blurred fill instead.
Does this tool upload my video anywhere?
No. All processing happens entirely in your browser using FFmpeg WebAssembly. Your video never leaves your device.