Video Resizer

A lightweight tool that resizes videos to target dimensions with aspect options, designed for creators, editors, and developers needing quick multimedia adjustments.

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1,704+
Total Calculations Run
< 15ms
Browser Execution Speed
100%
Client-Side Privacy
4.9 / 5.0
User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how Video Resizer processes input data instantly inside your browser.

Sample Input Image dimensions: 4000 x 3000 pixels (File size: 5MB PNG)
Computed Result Output WebP Image: 1920 x 1440 pixels (File size: 350KB, 88% reduction)
Execution Mode Client-Side In-Browser JS
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About This Tool

The Video Resizer accepts a source video and target dimensions to produce a single, encoded clip whose size matches the requested width and height. It preserves or deliberately alters aspect depending on user choice. Conceptually, the tool computes a scaling factor, then applies either padding, cropping, or direct stretching to achieve the target frame. Users benefit from predictable outputs suitable for social, web, or broadcast workflows. Core differentiators include explicit aspect handling options, codec and bitrate controls, and a straightforward API-friendly interface. Core features include input validation, support for common containers, and clear output metadata.
The tool is designed for teams and individuals who need repeatable results in automated pipelines. It supports presets for platform standards, batch-ready input lists for bulk operations, and detailed encoding summaries for integration with asset management systems. It focuses on practical, standards-aligned resizing rather than marketing gloss, providing concrete controls that map to real-world delivery requirements.
In practice, users supply source video, target resolution, and optional encoding settings; the system returns a resized file along with a brief encoding summary and final dimensions. This enables downstream editors, producers, and developers to maintain consistent media quality across projects with minimal manual intervention.

How to Use

  1. Provide inputs: Upload the source video file and enter target_width and target_height (px). Set maintain_aspect to true to preserve proportions.
  2. Choose method: select crop_mode (none, crop, or pad) to control how the aspect fit is achieved.
  3. Configure encoding: pick output_format and optional video_bitrate_kbps, audio_bitrate_kbps, and frame_rate.
  4. Run processing: initiate the resize task.
  5. Retrieve results: download output_file and verify final dimensions and bitrate.
How to use video resizer free

Frequently Asked Questions

Find Quick Answers

What formats are supported for input and output?
The tool accepts common container formats such as MP4, MKV, and WebM as input. Outputs default to MP4 with a compatible codec (e.g., H.264) and can be configured to WebM or MKV if supported by the pipeline.
Can I resize multiple videos in one operation?
Batch processing is available as an advanced workflow. It requires preparing a list of inputs and may involve sequential processing steps; performance depends on resource availability.
How are aspect ratio, cropping, and padding handled?
If maintain_aspect is true, the tool scales to fit within target dims and uses crop or pad based on crop_mode. Crop trims excess; pad adds letterboxing. If maintain_aspect is false, the output is stretched to exactly target_width x target_height.

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