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Alan_AEDScripts
Alan_AEDScripts
Inspiring
November 22, 2016
Answered

Convert Audio to Keyframes (relationship to Decibel levels)

  • November 22, 2016
  • 1 reply
  • 1044 views

Hi there I wonder does anybody know how the values of convert audio to keyframes, is calculated ?

What is the numerical relationship between "audio to keyframes" and decibel levels... ?

I am trying to figure out how to calculate LUFS, loudness average from the values. Loudness can be calculated in Media Encoder,

but for interest would like to know the relationship of "Both Channels" to decibel level...

Any ideas?

tks.

    This topic has been closed for replies.
    Correct answer Rick Gerard

    Convert audio to keyframes just takes the levels - not the loudness but the value shown on a VU meter and converts that to a number with the same range as the VU meter. The VU goes from -24 to 0, or traditionally for analogue from -12 to +12. The range range for audio keyframes goes from zero to 50 so using the digital VU meter markings a value of -10 will give you a keyframe value of 20.

    You can see the numbers in the graph editor:

    1 reply

    R
    Community Expert
    Rick GerardCommunity ExpertCorrect answer
    Community Expert
    November 22, 2016

    Convert audio to keyframes just takes the levels - not the loudness but the value shown on a VU meter and converts that to a number with the same range as the VU meter. The VU goes from -24 to 0, or traditionally for analogue from -12 to +12. The range range for audio keyframes goes from zero to 50 so using the digital VU meter markings a value of -10 will give you a keyframe value of 20.

    You can see the numbers in the graph editor:

    Alan_AEDScripts
    Alan_AEDScriptsAuthor
    Inspiring
    November 22, 2016

    Thanks a lot Rick, thats brill, can I ask how you know the range is 1-50 ? or where is there information on that . . .?

    Thank you

    Alan.

    R
    Community Expert
    Rick GerardCommunity Expert
    Community Expert
    November 22, 2016

    I know because I tested it out with some audio long time ago.

    Record a tone at 50%, record another town at 100 or zero DB and check it out for yourself.

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