You don't have that option available as parameter on YouTube. Take a look at the available parameters here :
https://developers.google.com/youtube/player_parameters#Parameters
سؤال
I would like to include an easter egg link to youtube, that would start the video with no sound, is it possible?
Something like
href= http://www.youtube.com/watch?v=xxxxxxxxxxxx&volume=0
to prevent sound for people who would click accidentaly
EDIT: workaround, quite to my liking - linking to:
http://www.youtube.com/video_is_aloud/watch?v=Pk-bwlLbCUU
i.e. the viewer is expected to correct the address (start playing) himself
المحلول
You don't have that option available as parameter on YouTube. Take a look at the available parameters here :
https://developers.google.com/youtube/player_parameters#Parameters
نصائح أخرى
As Hugo said already you cant find an option to mute in the known parameters website, but if you will use the mute parameter it will still work.
muted:
https://www.youtube.com/embed/xY2W1As-Plo?mute=1;autoplay=1
unmuted: