in my experience 90% of all indie bands that tour small venues do not care about filming. added to that about 98% of all hardcore acts allow filiming. btat.wagnerone.com is pretty good at documenting which bands allow video, but they do mostly focus on documenting audio policies.
in the past year. off the top of my head these bands allow video.
my chemical romance,
converge,
cave in,
the locust (they actually don't like filming, they actually hate it, but won't stop you if you decide you want to film)
your enemies friends
isis
these arms are snakes
the blood brothers
clann zu
codeseven
comeback kid
figure four
everytime i die
hank williams III (he allows pretty much anything)
local h
noise ratchet
pretty girls make graves
terror
three inches of blood
throwdown
unearth
zao
zebrahead