Most online video cutters force a full transcode every time you trim a 5-second clip out of a 10-minute recording—wasting minutes of CPU time and introducing generation loss. Our Video Trimmer gives you direct control over both FFmpeg cutting architectures:
| Trim Mode | FFmpeg Pipeline | Processing Speed | Visual Quality | Cut Precision |
|---|---|---|---|---|
Lossless Fast (-c copy) |
Copies raw compressed video/audio packets directly | ~0.5 – 2 seconds | 100% identical (0% generation loss) | Nearest GOP keyframe (~0.5s – 2s) |
| Frame-Exact (Re-encode) | Decodes frames and re-encodes via libx264 / libvpx |
5 – 20 seconds | Near-lossless (yuv420p) |
Exact 0.1s millisecond timestamp |
| Animated GIF Export | Two-pass palettegen + paletteuse Lanczos filter |
3 – 10 seconds | 256-color optimized GIF | Exact 0.1s timestamp at 10 fps |
If Lossless Fast encounters a container mismatch (for example, trimming an .mkv file and exporting to .mp4), the engine automatically falls back to accelerated H.264 encoding so your export always succeeds.
