windows FFMPEG来归一化视频的响度

epggiuax  于 2022-12-19  发布在  Windows
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我想知道是否有办法让我把声音从视频正常化到EBU R128标准。
目前,我正试图做2步旁路,但我不确定我哪里出错了。
以下是我的命令:
第一个月
结果是这样的:

"
[Parsed_loudnorm_0 @ 000002107bee2dc0]
Input Integrated:    -17.4 LUFS
Input True Peak:      +0.0 dBTP
Input LRA:             8.4 LU
Input Threshold:     -27.9 LUFS

Output Integrated:   -22.9 LUFS
Output True Peak:     -4.2 dBTP
Output LRA:            6.4 LU
Output Threshold:    -33.2 LUFS

Normalization Type:   Dynamic
Target Offset:        -0.1 LU
"

在那之后,我会这么做
ffmpeg -i D:\Person\Documents\Projects\IngestQC\abn.mxf -c:v copy -c:a pcm_s24le -ac 2 -af loudnorm=I=-23:TP=-2:LRA=7:measured_I=-17.4:measured_TP=0:measured_LRA=8.4:measured_thresh=-27.9:offset=-0.1:linear=true:print_format=summary -ar 48000 D:\Person\Documents\Projects\IngestQC\abn_done.mxf
然而,当针对eFF测试它是否符合EBU R128(-23)时,它说它不符合。
eFF称其价值为:

Channel Group Information
Number of Groups: 2
Channel Group Layout: Mono_Mono
Channel Group Name: MonoOne
Loudness Specification: EBU R128
Loudness Units: LUFS
Program Loudness Target: -23.0 LUFS
Program Loudness: -26.0 LUFS
Loudness Range: 6
PPM Scale: BBC
PPM Threshold: 8.00
Max PPM: 6.62
True Peak Threshold: -3.00 dBTP
Maximum True Peak: -5.00 dBTP
Attenuation required for file to meet target: 3.0
Channel Group Name: MonoTwo
Loudness Specification: EBU R128
Loudness Units: LUFS
Program Loudness Target: -23.0 LUFS
Program Loudness: -26.0 LUFS
Loudness Range: 6
PPM Scale: BBC
PPM Threshold: 8.00
Max PPM: 6.62
True Peak Threshold: -3.00 dBTP
Maximum True Peak: -5.00 dBTP
Attenuation required for file to meet target: 3.0
1

我不知道我做错了什么
我想知道是否有一种方法可以让它给予正确的音频响度,同时保持相同的格式的mxf

66bbxpm5

66bbxpm51#

找到了答案:
我得先跑一趟

ffmpeg -i 03.mxf -c:v copy -c:a pcm_s24le -af loudnorm=I=-23:TP=-2:LRA=7:print_format=json -f null -

然后,确保添加正确的信息

ffmpeg -i 03.mxf -c:v copy -c:a pcm_s24le -af loudnorm=I=-23:TP=-3:LRA=7:measured_I=-20.40:measured_LRA=8.40:measured_TP=0.02:measured_thresh=-30.86:offset=-0.12:linear=true:print_format=summary -ar 48k newTest1.mxf

最后

ffmpeg -i newTest1.mxf -map 0:0 -map 0:1 -map 0:1 -c:v copy -c:a copy ACnewTest1.mxf

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