I don't comment on all videos! I did say yours was nice... What are your thoughts about your system and how it sounds on the video ?
My thoughts on my system? It brings me much pleasure with most any piece and/or genre I might listen to and in the process has also provided me a nice general education as I've learned much from it. But of course the real pleasure part actually occurs when listening volume levels approach intended live performance volume levels. As with this piece below. IOW, give it some juice. After all, one can make most any piece seem somewhat musical (less challenging) at lesser volumes.
What do I think of the sound of my Danny Boy video? Well, you said you heard a tad of a metallic-like sound but I don't hear that. I think I hear a rather balanced musical presentation with perhaps a slight tilt toward bright at times due to a deficiency.
I can think of several potential reasons for this deficiency including but it's probably mostly due to my system being a bit crippled. I've no tone or balance controls except for the not-too-uncommon HF L-pad and MR L-pad at the back of each speaker. These are essentially speaker tone controls that I don't prefer as I suspect such controls always have the potential to introduce more distortions. Anyway, I always run everything flat or neutral if any such tone controls exist but a few years ago I blew a few resistors in the right channel's mid-range L-pad. Hence, until the L-pad is fixed, I'm forced to dial the mid-range L-pad up to 1:30 p.m. for both L&R channels (to maintain balance) when this mid-range L-pad setting would normally be set to supposed flat or 12 pm. So I'm aware that it can be a bit bright at times but even so hopefully the presentation still seems relatively balanced.
Regardless, I'd venture that with the Danny Boy video or perhaps any of my videos, in most every case should be well within the musical ballpark of a supposedly "official" youtube video - which is perhaps our best reference for direct comparison to an unadulterated "official" youtube video. Not to mention that one ought never hear that seemingly common empty-coffee-can-like sound from any of my videos, nor from any supposed official youtube video, nor from any live performance.