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| const command = ffmpeg() | |
| const commandArray = [] | |
| command.addInput(`./best.mp4`) | |
| command.addInput(`./best2.wav`) | |
| commandArray.push(`[1]volume=0.1[a1]`) | |
| command.addInput(`./voiceover.mp3`) | |
| commandArray.push(`[2]volume=0.9[a2]`) | |
| let ffmpegKeys = '[a1][a2]amix=inputs=2[a]' | |
| commandArray.push(ffmpegKeys) |