MP4 Compressor
Reduce MP4 videos with constant-quality (CRF) or two-pass target-size H.264 encoding.
Select a file for MP4 Compressor
Drag & drop your files here, or click to browse
Videos taller than this are downscaled; smaller videos are not upscaled.
- Compression re-encodes the video (H.264 for MP4/MOV, VP9 for WEBM). Some quality loss is inherent to lossy compression.
- If the result is not smaller than the original, the report says so — the original may already be well compressed.
How to use MP4 Compressor
From upload to download in 3 steps.
- 1
Add your file
Choose or drag a MP4 and M4V file into the upload area (up to 1 GB each).
- 2
Adjust the settings
Optionally change the compression mode, max resolution and audio bitrate — the defaults work well for most files.
- 3
Compress and download
Click Compress, follow the progress, and download the result. Files are deleted from the server automatically afterwards.
Supported formats and settings
- Input formats
- MP4M4V
- Output formats
- MP4
- Limits
- Up to 1 GB per file
- One file per job
- Files are deleted automatically after processing
- Compression Mode
- Quality preset, Target file size (MB) and Target percentage of original
- Quality Preset
- High quality (light compression), Balanced (recommended), Small file and Smallest file
- Target Size
- 1–4000 MB
- Target Size
- 10–90 % of original
- Max Resolution
- Keep original, 1080p, 720p, 480p and 360p
- Audio Bitrate
- 192 kbps, 160 kbps, 128 kbps, 96 kbps, 64 kbps, 48 kbps and 1 more
Why use our MP4 Compressor?
Genuine Processing
Real conversions by proven engines — never renamed copies or fake results.
Private by Design
Files are deleted automatically after processing and never used for training.
Free to Use
No account, no subscription and no watermarks on your files.
Frequently Asked Questions
Which file formats does MP4 Compressor support?
MP4 Compressor accepts MP4 and M4V files. It produces MP4.
Is there a file size limit?
Each file can be up to 1 GB. Larger files take longer to upload and process.
What happens to my files?
Files are uploaded only when you start processing. They are stored under random names in a private temporary folder, processed, and deleted automatically shortly afterwards — the exact time is shown with your result — or immediately when you click “Delete files now”. Files are never shared or used for training.
How does MP4 Compressor work, and what are its limitations?
Compression re-encodes the video (H.264 for MP4/MOV, VP9 for WEBM). Some quality loss is inherent to lossy compression. If the result is not smaller than the original, the report says so — the original may already be well compressed.
Is MP4 Compressor free to use?
Yes. MP4 Compressor is free, needs no account, and does not add watermarks to your files.
Related Tools
Tools that work with the same formats as MP4 Compressor
Video Compressor
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MOV Compressor
Compress Apple MOV files recorded on iPhone and Mac down to shareable sizes.
Crop Video
Crop video borders to 16:9, 9:16, 1:1, or custom aspect ratio frames.
Trim Video
Cut start and end times or extract video highlights with frame accuracy.