Daily Archives: May 27, 2018

當多媒體檔案聲音大小需要調整時 可參考 https://trac.ffmpeg.org/wiki/AudioVolume get stats ffmpeg -i INPUT_FILE -filter:a volumedetect -f null NUL (NUL or /dev/null) [Parsed_volumedetect_0 @ 000001be4a046040] n_samples: 26064896 [Parsed_volumedetect_0 @ 000001be4a046040] mean_volume: -32.1 dB [Parsed_volumedetect_0 @ 000001be4a046040] max_volume: -5.6 dB adjust volume ffmpeg -i INPUT_FILE -af “volume=5.6dB” … Continue reading →