Help: adjusting embedded music iframe volumes

[Memory]

sorry if ive been flooding this section of the forum with questions lately- i just have maany issues that popup as i work more on my site that i cant seem to find solutions to anywhere! 

this question deals with multiple types of iframes, so ill mention them here:


is there a way to adjust the default volume for:

- a webamp player? i noticed that the starting volume is always 80%, which is quite loud

- an embedded soundcloud player?

- and an embedded yt video?


also thank you very much to everyone thats helped me with my previous questions, its helped me a lot with the development of my website