Compress MP4 Online — Reduce File Size by Up to 40-80%
Compress MP4 files online instantly. Reduce .mp4 file size by 40-80% with no quality loss. Batch compress 100+ files. No signup, no watermarks.
Batch Settings
About MP4 Compression
MP4 is the universal video format — but file sizes vary wildly depending on the encoder settings, resolution, and bitrate used during recording. A 10-minute 1080p MP4 can range from 100 MB (well-compressed) to 2 GB (raw camera output).
CocoConvert's MP4 compressor re-encodes your video using the H.264 codec with CRF (Constant Rate Factor) mode, which allocates bits intelligently — more for complex scenes, fewer for static ones. CRF 23-28 produces excellent quality at dramatically smaller file sizes.
For social media sharing, downscaling to 720p and using CRF 28 can reduce a 1 GB video to under 100 MB with quality that looks great on phone screens. For archival, CRF 18-23 preserves near-original quality.
Audio is re-encoded to AAC at 128kbps by default — transparent quality for virtually all content. Batch compression processes up to 100 videos on Pro plans.
How to Compress MP4
- 1
Upload your MP4 file
Drag and drop your .mp4 file into the upload area, or click to browse. Batch upload is supported.
- 2
Adjust compression settings
Use the quality slider to control the compression level. Lower values produce smaller files.
- 3
Click "Compress"
CocoConvert compresses your MP4 file using optimised video encoding.
- 4
Download the compressed MP4
Your smaller .mp4 file is ready. Typical reduction: 40-80%.
Compression Tips
MP4
.mp4 file • Video
Use CRF 28-32 for social sharing. Lower resolution to 720p for mobile.
| Extension | .mp4 |
| MIME Type | video/mp4 |
| Category | Video |
Frequently Asked Questions
What are the limits for MP4 compression?
CocoConvert lets you compress MP4 files with no signup required. You get 5 files per hour (up to 250 MB each) on the starter tier. Pro users get 100 files per hour and 5 GB per file.
How much can I reduce MP4 file size?
Typical MP4 compression reduces file size by 40-80%, depending on the original file and quality settings. Tip: CRF 23 for general, CRF 28 for social media, CRF 18 for archival.
Does compression affect MP4 quality?
CocoConvert gives you full control over the quality-size trade-off. Higher quality settings preserve more detail; lower settings produce smaller files. For lossless formats, compression is always bit-for-bit identical.
Is my MP4 file secure?
Absolutely. Files are processed on isolated servers in Germany, encrypted in transit via TLS, never analysed or shared, and permanently deleted within 24 hours.
Can I batch compress multiple MP4 files?
Yes! You can compress up to 5 files per hour on the starter tier. Pro users get 100 files, Business API users get 200. All files are processed in parallel.