Trim HEVC/H.265 Video Online Free
HEVC (H.265) is the codec behind most 4K video today. It's efficient but notoriously slow to re-encode. JustTrimVideo uses stream copy mode - trim your HEVC videos instantly without the hours-long re-encoding process.
What is HEVC/H.265?
HEVC (High Efficiency Video Coding), also known as H.265, is a video compression standard that offers ~50% better compression than H.264 at the same quality. It's the standard codec for 4K content, used by iPhones (since iPhone 7), modern cameras, and streaming services.
Why HEVC is Hard to Edit
HEVC's excellent compression comes at a cost: it's computationally expensive.
- Encoding is slow: Re-encoding a 10-minute 4K HEVC video can take 30+ minutes on a fast computer
- Hardware requirements: Many older computers struggle with HEVC decoding/encoding
- Software support: Some video editors don't handle HEVC well or require plugins
The solution: Stream copy mode bypasses all of this. No decoding, no encoding - just extracting the bytes you want.
Common Sources of HEVC Video
iPhone (7 and later)
Default camera format since iOS 11 with "High Efficiency" enabled
4K Cameras
Sony, Panasonic, DJI, GoPro and others use HEVC for 4K
Screen Recordings
macOS screen recording uses HEVC by default
Video Downloads
Streaming rips and 4K content often use HEVC
How to Trim HEVC Videos
- 1 Select your HEVC video
Click "Choose File" and select your video. HEVC files are usually .mp4, .mov, or .mkv containers.
- 2 Set your trim points
Use keyboard shortcuts (I/O) or enter times manually. Modern browsers can preview HEVC.
- 3 Download instantly
Stream copy mode means no waiting for re-encoding. Output is identical quality to input.
HEVC vs H.264
| Feature | HEVC (H.265) | H.264 (AVC) |
|---|---|---|
| Compression efficiency | ~50% better | Baseline |
| 4K support | Native, efficient | Possible but large files |
| Encoding speed | Slow | Fast |
| Browser support | Most modern browsers | Universal |
| Hardware decoding | Newer devices | Universal |
Browser Compatibility
HEVC playback in browsers depends on your operating system and hardware:
- Safari on Mac: Full HEVC support
- Edge on Windows: Requires HEVC Video Extensions from Microsoft Store
- Chrome/Firefox: Limited support, varies by platform
If preview doesn't work, enter trim times manually - the trimming will still work correctly.
Ready to trim your HEVC video?
Go to the Video Trimmer →