almost looks and sounds injector related to me, id be pulling injector plugs one at a time till the noise changes, or rather doesnt, good injector noise/idle gets worse, bad injector noise/idle doesn't change.
if your close to anyone with scan software get injector correction values.
then id be cleaning all the injector connections and plug connections with electrical contact cleaner and giving them a bit of in out to ensure good contacts.
if it gets better or goes away, job done, but there is injector plug/loom issues known so keep in mind contacts on the loom side could be breaking down.
a good quality injector cleaner never goes a miss so wouldn't be a waste even if not the issue, but id use that after connections checked.
oil change again wouldn't go a miss but cant see what it would do alone, my last oil change I did top end additive to clean followers etc for tank of fuel before change, then used a flush, then refilled fresh oil.
but having had a bad injector, it sounds similar.
this was all I had video wise from tailpipe(mines a 4 cylinder )