ffmpeg混音命令
阿新 • • 發佈：2018-11-19
ffmpeg -i INPUT1 -i INPUT2 -i INPUT3 -filter_complex amix=inputs=3:duration=first:dropout_transition=3 OUTPUT
inputs The number of inputs. If unspecified, it defaults to 2.//輸入的數量，如果沒有指明，預設為2. duration How to determine the end-of-stream.//決定了流的結束 longest The duration of the longest input. (default)//最長輸入的持續時間 shortest The duration of the shortest input.//最短輸入的持續時間 first The duration of the first input.//第一個輸入的持續時間 dropout_transition The transition time, in seconds, for volume renormalization when an input stream ends. The default value is 2 seconds. //指一個輸入流結束時音量從正常到無聲漸止效果，預設為2秒