4K (3840x2160) Test Video
A genuine 4K UHD video, not a relabeled 1080p file, for testing anything that claims to support 4K uploads, playback, or transcoding.
What these files actually are
This is a real, valid 3840x2160 video, ffmpeg testsrc pattern encoded at genuine 4K resolution, not a 1080p file with a misleading filename.
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Download4K UHD (3840x2160) MP4MP4 · 987 KB VirusTotal report
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Download1080p MP4 (for comparison)MP4 · 380 KB VirusTotal report
Are these files safe to download?
Every sample file is generated by us — no executable code, no macros. Files are served over HTTPS from our CDN, each with a SHA-256 checksum so you can verify your download and a link to an independent VirusTotal scan report.
Check this site independently:
Specs
- Resolution
- 3840x2160 (4K UHD)
- Codec
- H.264 (yuv420p), AAC audio
- Container
- MP4
- Duration
- 4 seconds
Common use cases
Upload limit testing
Confirm your app accepts genuine 4K resolution, not just a large file size.
Player capability checks
Verify your video element or player actually decodes and displays 4K without downscaling artifacts.
Transcoding pipeline testing
Feed a real UHD source into your encoding pipeline and confirm output quality and timing at the top of your resolution ladder.
Frequently asked questions
- Is this actually 4K, or just a big file?
- It is genuinely encoded at 3840x2160. You can confirm this with ffprobe or your player’s video-info panel.
- Why include a 1080p file too?
- So you can compare behavior (upload time, playback, transcoding) between the two resolutions side by side.