Audio, loudnorm for videos
Example of use of http://k.ylo.ph/2016/04/04/loudnorm.html A way to get a video with a better relationship of loudness for speech, music and "Action-Thunder" Perhaps all ways known, perhaps not. Example of video with ac3 + h.264 ffmpeg filter, /dual-pass/ mode : 1. Measurement with results : ffmpeg -i "Desperado.ts" -c:v copy -filter:a loudnorm=I=-16:TP=-1.5:LRA=11:print_format=summary -f null - ... Input Integrated: -26.0 LUFS Input True Peak: -3.1 dBTP Input LRA: 18.1 LU Input Threshold: -37.4 LUFS Output Integrated: -17.0 LUFS Output True Peak: -1.5 dBTP Output LRA: 11.8 LU Output Threshold: -27.7 LUFS Normalization Type: Dynamic Target Offset: +1.0 LU "Desperado.ts" renamed to "Desperado .ts, 2. use of measurements : ffmpeg -i "Desperado .ts" -c:v copy -af loudnorm=I=-16:TP=-1.5:LRA=11:measured_I=-26.0:measured_TP=-3.1:measured_LRA=18.1:measured_thresh=-37.4:offset=+1.0:linear=true:print_format=summary -c:a ac3 -b:a 448k -ar 48000 "Desperado.ts" Worth to try. regards
Same can be done with ebur128 + volume, and several times faster.
participants (2)
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Paul B Mahol -
Richard Bartczak