Extract audio track
Plan extracting the first audio track with -vn and estimate size from bitrate and duration.
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
视频提取音频规划 ffmpeg -i clip.mp4 -vn -map 0:a:0 -c:a libmp3lame -b:a 128k -ar 44100 output.mp3 -vn 关闭视频；默认选择第一条音轨 估算体积：0.92 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：提取音频音轨-vnmp3video