Initial commit

presets/ffmpeg-a2v/ffmpeg-ahistogram.yml

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+preset:
+    name:   Create histogram from audio
+    group:  ffmpeg/a2v
+    plugin: ffmpeg
+    props:
+        filter: "ahistogram=dmode=separate:slide=1:scale=log"

presets/ffmpeg-a2v/ffmpeg-aphasemeter.yml

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+preset:
+    name:   Create phase meter from audio
+    group:  ffmpeg/a2v
+    plugin: ffmpeg
+    props:
+        filter: "aphasemeter=mpc=#ff8800"

presets/ffmpeg-a2v/ffmpeg-showspectrum.yml

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+preset:
+    name:   Create spectrum from audio
+    group:  ffmpeg/a2v
+    plugin: ffmpeg
+    props:
+        filter: "showspectrum=mode=separate:color=intensity:slide=1:scale=log"
+

presets/ffmpeg-audio/ffmpeg-audio-compand.yml

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+preset:
+    name:   Compress/expand dynamic range
+    group:  ffmpeg/audio
+    plugin: ffmpeg
+    props:
+        filter: "[0:a]compand=.3|.3:1|1:-90/-60|-60/-40|-40/-30|-20/-20:6:0:-90:0.2"
+        extra: "-c:v copy"
+        type: complex

presets/ffmpeg-audio/ffmpeg-audio-dynaudionorm.yml

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+preset:
+    name:   Normalize audio level
+    group:  ffmpeg/audio
+    plugin: ffmpeg
+    props:
+        filter: "dynaudnorm=m=100:s=12"
+        #filter: "dynaudnorm=m={maxgain}:s={compress}"
+        extra: "-c:v copy"
+        type: complex
+    params:
+        compress: { label:"Compression factor", type:float, min:0.0, max:30.0, default:0.0 }
+        maxgain: { label:"Max gain factor", type:float, min:0.0, max:100.0, default:10.0 }