Some videos or images of volcanic activity
    
 Hawaii
    
 The main USGS Hawaii Volcano Observatory image index is here.
    
 It has a wealth of images and videos.
    
Kilauea East Rift Zone: the June 27th flow moving through forest
      on September 1, 2014
    
http://hvo.wr.usgs.gov/multimedia/uploads/multimediaFile-754.mov
    
Halema'uma'u crater on October 17, 2012. Note activity within
      lava lake and gas plume. 
    
http://hvo.wr.usgs.gov/multimedia/uploads/multimediaFile-419.mov
    
Spattering of lava lake at Halema'uma'u. Note sinking lava
      
      
        http://hvo.wr.usgs.gov/multimedia/uploads/multimediaFile-378.mov
      
      Lava stream on steep flank of Pu'u 'O'o
      
      
        http://hvo.wr.usgs.gov/multimedia/uploads/multimediaFile-223.mov
      
      Main lava stream on lower east flank of Pu'u 'O'o
      
      
        http://hvo.wr.usgs.gov/multimedia/uploads/multimediaFile-224.mov
      
      
      Aerial view of vents on lower flank of Pu'u 'O'o
      
      
        http://hvo.wr.usgs.gov/multimedia/uploads/multimediaFile-198.mov
      
      
      Another aerial view of vents on Pu'u 'O'o
      
      
        http://hvo.wr.usgs.gov/multimedia/uploads/multimediaFile-194.mov
    
      Video of propagating fissure eruption, March 5, 2011
      
      http://hvo.wr.usgs.gov/multimedia/uploads/multimediaFile-18.mov
      
      Filling of Pu'u 'O'o crater
      
      
        http://hvo.wr.usgs.gov/multimedia/uploads/multimediaFile-273.mov
      
      
      Lava flow and vent, east wall Pu'u 'O'o Crater
      
      
        http://hvo.wr.usgs.gov/multimedia/uploads/multimediaFile-153.mov
      
      
       Stromboli
 The main Swiss index to Stromobli is here
    
        An all too shore example of Strombolian activity
    
A longer example of Strombolian activity. Note event at 2:20:
    
https://www.youtube.com/watch?v=wJC3Eab3HBE
    
 Etna
    
 The first
        of four videos from 2002
      
      Merapi
    
Unzen Dome collapse and pyroclastic flow
      
https://www.youtube.com/watch?v=Cvjwt9nnwXY
       
https://www.youtube.com/watch?v=3WF0os9xCtI
    
        Mt St Helens 1980 Eruption USGS video
    
        http://gallery.usgs.gov/videos/234#.UA80S0axdKI
    
 Mt St Helens Dome Growth Time Lapse 2004-2008
    
Another Mt St Helens compilation
And yet another Mt St Helens video
    
https://www.youtube.com/watch?v=K5pidzTZslo
    
 Mt Ruapehu, New Zealand, 1995-1996
    
        Another sequence by Geoff Mackley
    
Three Japanese mudflows
      https://www.youtube.com/watch?v=kznwnpNTB6k
      
  Fuego Volcano, Guatamala
       small
        mudflow
Volcanian Eruption
http://www.youtube.com/watch?v=mIX43uy4Zvg
Plinian Eruption, aerial view of Chaiten volcano, Chile in
      2008
    
https://www.youtube.com/watch?v=K7LHxfNFBa4
View from surface of 2008 Chaiten eruption
    
https://www.youtube.com/watch?v=kApa82e7VT0
    
Surtseyan Eruption
http://www.youtube.com/watch?v=JwEprwMGPq4
Submarine formation of pillow basalts
http://www.youtube.com/watch?v=DdIUuUY0L9c
Syracuse students pour lava on to a bed of ice