You haven't mentioned the Spark plugs.Try a new set maybe and also with a Multimeter check the resistance of both plug caps.They start off @ 5k ohms but once they get north of 8K ohms they can cause similar problems to the sounds in your video.
The OEM caps are way too expensive in my IMHO so I replaced mine with NGK Straight racing ones,
SD05FMR Red ones
https://www.ebay.co.uk/itm/Suzuki-SV...rk:13:razz:f:0
or,
SD05FMB Black.
I made around debris protector out of some old inner tube to replace the OEM rubber one as it didn't fit right on the Straight Caps.If I were going to use the bike commuting I would make a 2nd slightly larger piece to go over the circle as added moisture/debris protection.