#9896: astats: add support for gated measurement
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Reporter: hsn | Type: enhancement
Status: new | Priority: normal
Component: avfilter | Version: 4.4.1
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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== Add support for gated measurement
Measurement would be more useful for anything other then music (such as
dialogs in movies) when gated measurement will be added.
I don't think something like gated measurement defined in EBU – TECH 3342
will fit this filter. Simple gate would be enough. Measure only if signal
exceeds predefined fixed level. In this kind of metering gated silence
will not be responsible for lowering integrated RMS loudness.
So I think two settings should be added
1. //gate level// in DB - when volume is bellow this level start closing
gate. Closing gate will not change output signal. Input will be still
measured and stats updated.
1. //gate close time// in sec - after gate is fully closed, stop using
input data for volume computations until gate opens again.
1. I am not sure if there is need for //gate open time// - pro VST3
measurement plugins are implementing open gate time defaulting to 4 ms.
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Ticket URL: <https://trac.ffmpeg.org/ticket/9896>
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