# Batch Video Convert

> Batch convert GIF to MP4 or MP4 to GIF across entire folders. Queue processing, screen wake lock, frame rate control, all run locally with no uploads.

- URL: https://bytescope.dev/en/batch-video-convert/
- Locale: en · Also: [ja](https://bytescope.dev/ja/batch-video-convert.md) · [zh-Hant](https://bytescope.dev/zh-Hant/batch-video-convert.md)
- Runs: The folder is opened locally by your browser. Videos are converted via WebCodecs and saved to your disk — nothing is uploaded.
- Requires: Full mode needs Chrome, Edge or Opera on desktop (File System Access API) to read a folder and write results next to it. Firefox and Safari get a reduced mode: pick the folder through a file input and download the results.
- Updated: 2026-09-08

## What it does

Batch Video Converter allows you to convert multiple GIF animations and MP4 videos in a folder directly in your browser. Whether you need to compress bulky GIFs into compact MP4 videos for web sharing or convert MP4 clips into animated GIFs, the entire process runs locally using browser WebCodecs hardware acceleration.

Videos are processed sequentially in a controlled queue to keep memory usage manageable, with automatic screen wake lock to prevent interruption during lengthy conversions. You can adjust frame rate, dimensions, and quality settings before starting the run.

## Limits

Does not edit, trim or add subtitles, and does not use codecs the browser's hardware lacks; conversion speed depends on the machine.

## FAQ

### Are video files uploaded anywhere?

No. Video decoding and encoding happen locally in your browser using WebCodecs. Files never leave your device.

### Why convert GIF to MP4?

MP4 videos are typically 5 to 10 times smaller than equivalent animated GIFs while delivering smoother playback and richer colors.

### Can I convert MP4 back to GIF?

Yes. You can convert MP4 files to animated GIFs with customizable frame rate, width, and color palette settings.

### How does queue processing work for large batches?

Videos are encoded one at a time in a queue to prevent high memory spikes. An estimated completion time and live progress bar keep you informed throughout the batch.

### Will my screen sleep during a long conversion?

The tool requests a Screen Wake Lock while the batch is running to keep your computer awake until all conversions finish.

## Related tools

- [MP4 to GIF](https://bytescope.dev/en/mp4-to-gif.md)
- [Batch Image Convert](https://bytescope.dev/en/batch-image-convert.md)