Extract audio by time
Extract audio between two times and emit -ss/-to with -vn.
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
按时间段提取音频 ffmpeg -ss 1 -to 5 -i clip.mp4 -vn -map 0:a:0 -c:a aac -b:a 128k output.m4a 时长 4s，估算体积 0.06 MB
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：时间段提取音频-ss-vnvideo