Video cut
Compare stream-copy and re-encode cuts. Copy is fast but keyframe-aligned.
Runs in your browserEvery computation happens in your browser — your data never leaves this device.
Video filename
Plan
ffmpeg arguments
Enter a video to plan
Stat: 0 · Stat 2: 0
What this tool does
- Check parameters before transcoding
- Convert time into samples or filters
Example
Input
clip.mp4
Output
视频剪切规划 ffmpeg -ss 2 -to 5 -i clip.mp4 -c copy output.mp4 stream copy：快速但起点可能对齐到关键帧
Computes an assertable plan or sample range. It does not touch devices or transcode files.
Frequently asked questions
Does it process the file?
No. It returns a plan, command, or sample range and never decodes media.
May numbers be strings?
Yes. Numeric strings from text controls are parsed as numbers.
Does it match ffmpeg exactly?
Times, filters, and bitrate formulas are deterministic; container overhead can still differ.
Keywords：剪切关键帧stream copy-ssvideo