Are files uploaded for this tool?

This browser tool processes the selected media locally on this device. The file is not uploaded to ArtPlayer servers for this workflow.

Will the export have a watermark?

No. ArtPlayer browser tools do not add watermarks to exported files.

The work runs in your browser, so speed depends on your device, browser, memory, source size, and the export settings needed for the result.

Recent Chrome, Edge, and other modern Chromium browsers usually work best for heavier browser media processing.

Try a smaller source, close other heavy tabs, reduce resolution or duration first, and keep the tab open until the export finishes.

Yes. Choose the original aspect option to resize by height while keeping the source proportions.

No. Resize changes the output dimensions. Use Crop Video if you want to cut the frame to a different shape.

Yes. Choose a square, portrait, or landscape size that matches the platform, then export a new MP4 in the browser.

Usually yes, especially when you reduce resolution. Use Compress Video afterward if you also need a smaller upload size.

Browser video tool

Local processingMP4 outputNo upload

Change video dimensions in the browser. Pick an aspect ratio, choose a size preset, and export a resized MP4.

Source video

Drop a file here, or click to choose

Aspect ratio

Output size

720p1080p

Three steps to finish the browser workflow.

1
Choose a video file
Change video dimensions in the browser. Pick an aspect ratio, choose a size preset, and export a resized MP4.
2
Output size
Choose a video, pick the target shape and size, then ArtPlayer uses a browser-native media pipeline and exports a resized MP4.
3
Preview and Download
Check the finished result, then download the exported file.

Core details about privacy, browser support, output, and practical limits before you start.

The selected video is processed locally in this browser with the Mediabunny/WebCodecs pipeline.

Resize for original ratio, landscape, portrait, or square outputs.

Pick HD or Full HD targets without writing scale and pad filters by hand.

Check supported inputs, output formats and usage requirements before you start.

Supported input	Video files such as MP4, MOV and WebM. Container and codec support depends on the browser and processing runtime.
Output result	Export options: MP4.
Processing and privacy	Processing runs on this device. Source media is not uploaded for this workflow.
Browser requirements	A browser with the decoding and encoding capabilities needed by the selected media. Available codecs vary by device.
Usage limits	Processing capacity depends on duration, dimensions, codecs, settings and available device memory. Large inputs can fail; keep the original file.
Will resizing crop the video?	No. Resize changes the output dimensions. Use Crop Video if you want to cut the frame to a different shape.