Resolution & Ratio Tool

Video Resize / Resolution Converter

Resize video to target resolution and output format

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Upload a file and process it without reading a long guide first.

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1. Select Video File

Optional Resize Guide

If you already know the target size, just process the file. Read this only when you need help with modes.

Quick Notes

Professional video resolution adjustment tool supporting video scaling to any target resolution. Provides three scaling modes: maintain aspect ratio fit (add black bars), stretch to fill (may deform), crop to fill (crop excess footage). Supports multiple preset resolutions (1080p, 720p, 480p, etc.) and custom resolution. Suitable for platform upload requirements, device compatibility, file compression and other scenarios.

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Key Features

  • Multiple scaling modes: Maintain aspect ratio fit, stretch to fill, crop to fill - three modes available
  • Preset resolutions: Supports common resolutions like 1080p, 720p, 480p, 360p
  • Custom resolution: Supports custom width and height for flexible needs

Use Cases

Platform upload: Adjust video resolution to meet YouTube, TikTok, Bilibili and other platform requirementsDevice compatibility: Adjust videos to resolutions supported by devices to ensure normal playbackFile compression: Reduce video resolution to reduce file size and save storage space

Frequently Asked Questions

What's the difference between the three scaling modes?

Maintain aspect ratio fit: Video scales proportionally, maintains original aspect ratio, insufficient parts filled with black bars. Stretch to fill: Video stretches to fill entire frame, may deform. Crop to fill: Video scales proportionally, excess parts cropped, maintains frame without deformation.

Will adjusting resolution affect video quality?

Enlarging videos to higher resolution may slightly affect quality as interpolation is needed. Reducing videos to lower resolution usually doesn't noticeably affect quality, may even make images look clearer. It is recommended to choose appropriate resolution based on actual needs.

Can I customize resolution?

Yes. In addition to preset common resolutions, you can also choose custom mode and enter any width and height values. It is recommended to use common aspect ratios (such as 16:9, 4:3, etc.) for best results.