About Compress Video
Shrink large video files for email, the web, or social platforms without the visible quality loss you get from screen-recording or re-uploading.
How compress video works
Video compression works by re-encoding your file with a more efficient codec configuration: lower bitrate, smarter keyframe placement, tighter quantization. The goal is to throw away data the human eye is least likely to notice, like fine noise, redundancy between similar frames, and imperceptible color detail, while keeping motion smooth and edges clean.
NextConvert uses FFmpeg under the hood with presets tuned per format. For MP4 we default to H.264 in CRF mode (constant quality), which produces visually equivalent results across scenes instead of pinning a single bitrate. For WebM we use VP9 with row-based threading. Both produce files that play natively in every modern browser and on iOS / Android without re-encoding.
Most users see file-size reductions of 40 to 80% depending on the source. Phone recordings and screen captures tend to compress hardest because they contain large flat regions. Cinema footage with film grain compresses less aggressively because the grain is real information the encoder has to preserve.
When to use it
Email attachments
Get a 250 MB phone recording under Gmail’s 25 MB attachment cap without uploading to a third-party service.
Discord & Slack
Fit clips inside the 25 MB free-tier upload limit without paying for Nitro or a workspace upgrade.
Web hosting
Reduce bandwidth and storage costs on Cloudflare, Vercel, or S3 by serving smaller media.
WhatsApp & Telegram
Send full-resolution clips that would otherwise be re-compressed (and degraded) by the messaging app itself.
Supported formats
Input
Output
We default to MP4/H.264 because it is the most universally compatible. It plays everywhere from old smart TVs to iMessage previews.
Step-by-step guide
- 1
Upload your video
Drag a file onto the drop zone or click to browse. Files up to 500 MB are supported on the free tier, and paid tiers raise this to 5 GB.
- 2
Pick a target
Choose a quality preset (High, Balanced, Small) or set a target file size in megabytes. We estimate the output size before the encode starts so you know what you’re getting.
- 3
Process and download
Click Compress. We’ll re-encode on our servers and stream the result back to your browser. The original file is deleted immediately after the job finishes.
Tips for the best result
- If a video is mostly static (a slideshow, a screen recording, a webinar), drop quality more aggressively. You’ll save a lot of size with almost no visible difference.
- Avoid compressing an already-compressed file twice. Each re-encode degrades quality. Compress once from the original source if possible.
- For social uploads, match the target platform’s recommended bitrate (Instagram around 3.5 Mbps for 1080p, YouTube around 8 Mbps for 1080p). Compressing well below their threshold doesn’t save you anything because they re-encode anyway.
Privacy and security
Files are uploaded to our processing servers over an encrypted connection and removed automatically after the job completes (usually within a few hours). We never share your media or train models on it. You can also delete a job manually at any time from your dashboard.
Read our full privacy policy for retention timelines and our list of subprocessors.