Effect Channel Map - video editor

the Effect Channel Map for Audio Mixer
function for
- control for how to mixer with multi-sources multi-channels audio
the dialog
examples
- at projectwe set the audio channels is 2, so is the stereo on client's side.
- we have two audio file for same track, Music1.ogg at layer6 and Wind1.ogg at layer7 but same track number(the second layer), so we got two audio file do output at same time.
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- see the image above, the Music1.ogg are 6 Channels, Wind1.ogg are 2 Channels
- v2mixer channels base on Default Channel Ordering
- now we must join as one, like this:
- let Music1.ogg and Wind1.ogg Front Left(CH1) to Left, Front Right(CH2) to Right
- then output Front Center(CH3) to Left and Right both.
- then output Low Frequency(CH4) also to Left and Right both.
- at last, output the Back Left(CH5) to Left
- output the Back Right(CH6) to Right.
- so we got the image, like that
- now, see what the client's speakers, here's Left(the target CH1)
  - 100% from Music1.ogg CH1
  - 100% from Music1.ogg CH3
  - 100% from Music1.ogg CH4
  - 100% from Music1.ogg CH5
  - 100% from Wind1.ogg CH1
- here's Right(the target CH2)
  - 100% from Music1.ogg CH2
  - 100% from Music1.ogg CH3
  - 100% from Music1.ogg CH4
  - 100% from Music1.ogg CH6
  - 100% from Wind1.ogg CH2
- just like the dialog
improve
- as example above, we target CH1, CH2both got the audio
- now we have the problem:
  - how do I increase the sound of the Wind and lower the sound of the Music?
  - how do I increase the sound of the Front Left and Right of Music and lower the other channels?
- look the value at dialog, many value of 0 and 100, that mean the percent for output(where to get the sound).
- such Left channel, as dialog say, CH1,CH3,CH4,CH5both 100%, we have to change as 100, 60,60, 60
  - at dialog, the first line of To is the target front Left, change CH1is 100, CH2is 0, CH3CH4CH5both 60, CH60
  - now the target front Left get 100% from CH1, 0% from CH2, 60% from CH3, 60% from CH4, 60% from CH5, 0% from CH6
    also mean CH1 output 100% to front Left, CH3, CH4, CH5 both 60%, so the target front Left total got 100+0+60+60+60+0=280% audio
  - the next line of To is the target next channel(so is target CH2,the front Right), we change to CH1is 0, CH2is 100, CH3CH4both 60, CH50, CH6to 60
- the Musicok, next is the Wind, where i can control the percent of Wind and Music?
- back to dialog, in Musicdialog target value is 280%
- then we have to let Winddialog output double than Music.
- so in Windthis effect dialog, target value we set to 560%, y, 560, so Windwill double of the the Music.
- now what's happen at mixer? the mixer will get the samples from all media, then output scale by total value.
- so the target(final outout) Left is 560+280 = 840, this's the 100%
  - so MusicCH1 value 100 as percent is 11.9%
  - MusicCH3 60 as percent is 7.14%, CH4 also 60 so 7.14%, and CH5 7.14% again
  - the WindCH1 value 560 as percent is 66.66%
  - so the target CH1(the front Left) will get the CH1 of Music11.9%, get 7.14% from CH3,4 and 5 of Music, then get 66% from Wind.
- is this you want? No, then change the value as you want.
- in short, where you want to increase just change to high value. v2mixer will count that for you.
the parameters
- Form, is the Channels list by current audio chapter.
- To, is the list for value you want to map.
  - first line is the target CH1
  - next line is CH2, the next of next is CH3...
- relation, when you change the value, here will paint as arrow for you.
- Target, here is the final result, before the mixer.
note
- if you are do in 2 channels to 2 chanenls, that would be much simpler, just 100 each..
- here is 2 to 6 (just example, you may want to adjust the volume of each channel)
- and 6 to 6