How to set volume for only a specific player?

[jonafeucht]

Say I have two players:
Player player1 = Player(id: 1);
Player player2 = Player(id: 2);

If I change the volume of player1 it will also change the volume for player2, which shouldn't happen.

[DomingoMG]

@jonafeucht It really is a strange thing.

I also had this problem, according to the LibVLC developers they say they should apply how a VLC player works, a separate volume per player.

But I have noticed that the volume is applied to all the players, the solution assigns an output device without being the default and you will be able to manage the volume independently.

It is not the correct solution but it works for me. The ideal is to watch without in C ++ allows you to control the volume independently per player.

Contact the LibVLC developers for this change.
https://github.com/videolan/libvlcpp

[alexmercerind]

Currently volume control isn't very good. I have to look libVLC APIs before claiming anything. Marking as "good first issue" aswell.

[DomingoMG]

I have not been able to check it 100%.
On the VLC forums there is a post from a person who has the same problem allocating the volume.

Command line:
This allows playing audio at lower or higher speed without affecting the audio pitch
--aout=direcsound
--aout {any, mmdevice, directsound, waveout, amem, afile, adummy, none}

read more here:
https://forum.videolan.org/viewtopic.php?t=147229

I will try it if it works

[KyleKun]

@DomingoMG could you get it to work?

[DomingoMG]

@KyleKun I currently don't have a solution per player.
I just know that if you assign a different output device to the player it becomes independent without affecting the other player.

It would be necessary to see if @alexmercerind could look for some type of complement that allows to differentiate the volume of the player.

In case of finding a better solution I will post it here.

[trapeye]

@KyleKun I currently don't have a solution per player. I just know that if you assign a different output device to the player it becomes independent without affecting the other player.

It would be necessary to see if @alexmercerind could look for some type of complement that allows to differentiate the volume of the player.

In case of finding a better solution I will post it here.

found solution?

[DomingoMG]

@trapeye, @alexmercerind, @KyleKun, @jonafeucht

SOLUTION FOUND:
You will only have to instantiate the player as I indicate and you will be able to adjust the volume independently and with Alex's implementation of setVolume you will change the volume.

I must indicate that I have spent days looking for millions of solutions, it has worked for me, I would appreciate a thumbs up.

COMMAND LINE:

vlc.exe "D:\tracks\Melendi - La Chica Perfecta.mp3" --aout=directsound --directx-volume=0.35

DART:

Player _player1 = Player(id: id, commandlineArguments: ['--aout=directsound', '--directx-volume=0.35']);
_player1.open(....Media.....);
_player1.setVolume(1.0);

Player _player2 = Player(id: id, commandlineArguments: ['--aout=directsound', '--directx-volume=0.35']);
_player2.open(....Media.....);
_player2.setVolume(0.50);

REMOVE INITIAL VOLUME IN C++: DART_VLC/player.h

[DomingoMG]

Hi @alexmercerind, you could let the user decide if it's directx-Sound, the setdevice is without {0.0.0.00000000}. and if it is mmdevice it is with {0.0.0.00000000}...

By default when instantiating the player in libvlc without the command line it is type --aout=mmdevice.

mmdevice uses {0.0.0.00000000}.{D267875D-5AEE-4346-AB97-8DDF8D51E28C}
but when using
directsound is directxsound its way of assigning output devices is {D267875D-5AEE-4346-AB97-8DDF8D51E28C}
without the {0.0.0.00000000}.

In the setDevice command ( OPTIONAL )

setDevice(Device device, { bool isDirectxSound = false }){
    if( isDirectxSound ) {
        device.id = {D267875D-5AEE-4346-AB97-8DDF8D51E28C}
    } else {
        device.id = {0.0.0.00000000}.{D267875D-5AEE-4346-AB97-8DDF8D51E28C}
    }
}

It is 100% proven that it works like this.

The documentation indicates that depending on the type it corresponds in one way or another.
This closes this request, allowing the assignment of channels with independent volumes for both types.

read more here:
VLC COMMAND LINE