ffmpeg -y -i sushi.mp3 -i dumiao.mp3 -filter_complex "[0:0][1:0] amix=inputs=2:duration=longest" -c:a libmp3lame -b:a 320k outputnow.mp3
pause

sushi.mp3是240秒的音频，dumiao.mp3是10秒的音频？
执行命令后长度只有10秒，我已经加了longest了啊！

================

命令运行中有下面的提示~~~

Press [q] to stop, [?] for help
[swscaler @ 06149780] deprecated pixel format used, make sure you did set range
correctly
[mp3 @ 055a30c0] Frame rate very high for a muxer not efficiently supporting it.

Please consider specifying a lower framerate, a different muxer or -vsync 2
Output #0, mp3, to 'outputnow.mp3':
--
修改:javame FROM 58.37.37.*
FROM 58.37.37.*