Stretch Video

Features

• Three distinct modes — Stretch (fill & distort), Crop to Ratio (trim edges cleanly), Fit with Bars (letterbox/pillarbox, no crop)
• Every common aspect ratio preset — 16:9 widescreen, 9:16 vertical (Stories/Reels/TikTok), 1:1 square (Instagram), 4:3 classic, 21:9 ultrawide, 3:2 photo
• Custom ratio input (e.g. 2.35:1 cinematic, 5:4 broadcast) and custom stretch factor from 1.1× to 4×
• Choose bar color for Fit mode — black, white, gray, dark blue, or any custom hex color
• 100% private — files never leave your browser, nothing uploaded to our servers
• No watermark, no sign-up, no file-size tricks
• Export as MP4, MOV, MKV, or WebM at your chosen encoding quality
• Perfect companion to our crop video, add letterbox bars, and flip video tools — chain them for compound effects

Quick Facts

• Stretching a 16:9 frame into 9:16 changes the shape by (16/9) / (9/16) = 3.16, so a circle in the source comes out roughly three times taller than it is wide. Source
• Fit with Bars pads around the original instead of scaling it, so 100% of the source pixels survive untouched; only Crop to Ratio discards picture.
• The Custom Factor path is limited to 1.1x-4x, and any custom ratio is clamped to between 0.1:1 and 10:1.

Which Tool Do I Need?

Stretch Video is the aspect-ratio tool: pick a target shape and a mode (stretch, crop, or bars). Resize Video changes the pixel dimensions - use it to go from 4K to 1080p, or to get an exact platform size like 1080x1920 with a blurred background instead of a stretch. Crop Video is for picking an exact region by width, height and offset rather than by ratio, and Add Letterbox does bars only. If you just want the frame wider by a set amount, Stretch Video Horizontally takes a factor instead of a ratio.

Frequently Asked Questions

What's the difference between Stretch, Crop, and Pad?

Stretch distorts the video to fill the new ratio — keeps all content but people/objects look wider or taller. Crop trims the edges to fit — no distortion but some content is lost at the edges. Pad (Fit with Bars) adds letterbox/pillarbox bars to preserve all content without any distortion or cropping.

How do I convert 4:3 video to 16:9 widescreen?

Upload your 4:3 video, select 'Crop to Ratio' mode and '16:9 Widescreen' as the target. The top and bottom are trimmed to fill the widescreen frame. Or use 'Fit with Bars' to add black pillarbox bars on the sides if you want to keep every pixel.

How do I make a vertical (9:16) video horizontal (16:9)?

Upload your 9:16 vertical video, choose 'Crop to Ratio' and '16:9 Widescreen'. The sides are cropped to create a horizontal video. If you don't want any cropping, use 'Fit with Bars' to add side bars — common for reposting vertical phone footage to YouTube.

How do I stretch a video for TikTok or Instagram Reels (9:16)?

Upload any horizontal video, pick 'Stretch' mode and '9:16 Vertical' — the video is stretched to fill the vertical frame. For no distortion, use 'Crop to Ratio' instead. Vertical formats work best for mobile-first platforms like TikTok, Instagram Reels, YouTube Shorts, and Snapchat.

Can I use custom aspect ratios like cinema 2.35:1?

Yes. Select 'Custom Ratio' in the Target Ratio dropdown and type your ratio in width:height form — e.g. '2.35:1' for CinemaScope, '21:9' for ultrawide cinema, '5:4' for classic broadcast, or '3:2' for photography. The tool handles any custom ratio.

How do I stretch video horizontally by an exact factor?

Select 'Custom Factor' in the Target Ratio dropdown and set the Stretch Factor slider. 1.5× makes the video 50% wider; 2× doubles the width; 4× is the maximum. The height stays the same while the width expands — good for creative stretched effects.

Will stretching lose quality?

We use high-quality scaling (bicubic) to minimize artifacts. Stretch and Crop modes re-encode the video, which has some loss but is imperceptible at Best encoding quality. Fit with Bars doesn't touch the original pixels — it just adds bars around them — so there's no generation loss.

Is this video stretcher free to use?

Yes — the video stretcher is completely free for standard use: no sign-up, no watermark, and files are processed in your browser so nothing is uploaded. It handles MP4, MKV, MOV, and WebM, and works as a horizontal or vertical stretcher depending on the ratio you pick.

How do I stretch a video without cropping it?

Choose Stretch mode to fill the new shape by distorting the picture, or Fit with Bars to keep every pixel untouched and pad the remaining space with bars. Both avoid cropping — only Crop to Ratio trims the frame.

What's the maximum video length or size?

Up to 10 GB on paid plans. Free users can process videos up to our standard free-tier limit. Processing time depends on video length and the encoding quality you choose.

Is this video stretcher really free?

Yes — no watermarks, no sign-up, no trial-length trickery. All processing happens in your browser so your file never leaves your device. We earn via optional AI tools (upscaling, background removal, 60 fps smoothing) which work on a pay-per-download basis.

How does this compare to a video cropper?

A cropper lets you pick the exact region to keep (freehand or by aspect ratio). This stretch-video tool is optimized for aspect-ratio conversions — choose a target ratio and pick a mode, done. For fine-grained region selection, use the crop video tool instead.

How do I stretch a video vertically?

Pick Stretch mode and 9:16 Vertical - the frame is pulled taller to fill the vertical shape. Expect visible distortion on faces; Crop to Ratio gives a vertical frame with correct proportions instead, at the cost of the left and right edges.

How much does stretching distort the picture?

It depends on how far apart the two ratios are. Going 16:9 to 9:16 is a 3.16x shape change, so everything looks about three times taller than wide. Going 16:9 to 4:3 is only a 1.33x change and is often unnoticeable on graphics.