- How do I resize a video for TikTok, Reels, or Instagram?
- Drop your video in, pick the matching preset — TikTok / Reels (1080×1920), Instagram Square (1080×1080), Instagram Portrait (1080×1350), YouTube (1920×1080) — and click Process. The resizer fits your footage to that size without stretching it.
- How do I resize a video to 1080p or 720p?
- Type the target dimensions — 1920×1080 for 1080p, 1280×720 for 720p — or pick the 720p preset, then click Process. In Fit mode (the default) the resizer scales your footage to that resolution while keeping its proportions, so downscaling 4K to 1080p stays sharp and never looks stretched.
- How is this video resizer different from Clideo or Kapwing?
- Speed and privacy. Clideo / Kapwing upload your video to their servers, queue it, re-encode it, and send it back — slow on long clips and your file briefly sits on their disk. This video resizer runs FFmpeg WebAssembly directly in your browser, so nothing leaves your device. A 100 MB MP4 resizes in seconds rather than minutes.
- Does the video resizer keep the aspect ratio?
- Yes — by default the resizer uses Fit mode, which scales your video to your chosen size while preserving its proportions, so it never looks stretched or squished. If you truly need an exact width × height regardless of shape, switch the Resize method to Stretch. To change the aspect ratio on purpose — crop to a new shape or add letterbox bars — use our stretch & aspect-ratio tool.
- Can I resize a video to a larger size (upscale)?
- Yes — you can resize up to any dimension. But naive upscaling just stretches pixels and won't add real detail; for true AI-enhanced upscaling, use our AI Upscale Video tool which reconstructs detail with our AI upscaler.
- Which formats does the video resizer support?
- Inputs: MP4, MOV, MKV, WebM, AVI, plus JPG / PNG / WebP for image resizing. Outputs: MP4 (H.264, default), MKV, MOV, WebM for video; PNG / JPG / WebP for images.
- Does the resizer preserve audio?
- Yes — the audio track passes through unchanged. Only the video stream is re-encoded to the new dimensions.
- Is there a file size limit on this video resizer?
- No hard cap below your plan limit. Free users can resize up to 10GB, which covers essentially any social-media-class video. Processing time depends on length and encoding quality.