Index: wiki/autocrypt.md
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@@ -1,11 +1,11 @@
 # Autocrypt: Email-encryption for everyone #
 
 ## Holger Krekel ##
 
 <video width="1280" height="720" controls="controls">
-<source src="//net2o.de/33c3/autocrypt.mp4">
+<source src="//net2o.de/33c3/autocrypt.mp4" type="video/mp4">
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Index: wiki/bc-pki.md
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--- wiki/bc-pki.md
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@@ -1,11 +1,11 @@
 # Decentralized PKI system based on blockchains #
 
 ## Bogdan Kulynych ##
 
 <video width="1280" height="720" controls="controls">
-<source src="//net2o.de/33c3/bc-pki.mp4">
+<source src="//net2o.de/33c3/bc-pki.mp4" type="video/mp4">
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Index: wiki/claimchain.md
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@@ -1,11 +1,11 @@
 # Towards Distributed Online Voting #
 
 ## Robert Riemann ##
 
 <video width="1280" height="720" controls="controls">
-<source src="//net2o.de/33c3/claimchain.mp4">
+<source src="//net2o.de/33c3/claimchain.mp4" type="video/mp4">
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Index: wiki/ethos.md
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@@ -1,11 +1,11 @@
 # Clean Slate Networking in an Adversarial World: Simple, Secure, Private Communication using MinimaLT #
 
 ## Jon A. Solworth and Janosch Rux ##
 
 <video width="1280" height="720" controls="controls">
-<source src="//net2o.de/33c3/ethos.mp4">
+<source src="//net2o.de/33c3/ethos.mp4" type="video/mp4">
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Index: wiki/honeybadger.md
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--- wiki/honeybadger.md
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@@ -1,11 +1,11 @@
 # HoneyBadger: Quantum Insert Recorder #
 
 ## David Stainton ##
 
 <video width="1280" height="720" controls="controls">
-<source src="//net2o.de/33c3/honeybadger.mp4">
+<source src="//net2o.de/33c3/honeybadger.mp4" type="video/mp4">
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Index: wiki/i2p.md
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@@ -1,11 +1,11 @@
 # #i2p-dev: Anonymity as a feature #
 
 ## Jack Grigg (str4d) ##
 
 <video width="1280" height="720" controls="controls">
-<source src="//net2o.de/33c3/i2p.mp4">
+<source src="//net2o.de/33c3/i2p.mp4" type="video/mp4">
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Index: wiki/net2o.md
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--- wiki/net2o.md
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@@ -1,11 +1,11 @@
 # net2o — works for me ⇒ works for you + onion routing #
 
 ## Bernd Paysan ##
 
 <video width="1280" height="720" controls="controls">
-<source src="//net2o.de/33c3/net2o.mp4">
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Index: wiki/np1.md
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@@ -1,11 +1,11 @@
 # Permission to chat? (n+1)sec and the challenges of decentralized authorization in secure multi-party chat systems #
 
 ## Richard King ##
 
 <video width="1280" height="720" controls="controls">
-<source src="//net2o.de/33c3/np1.mp4">
+<source src="//net2o.de/33c3/np1.mp4" type="video/mp4">
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Index: wiki/panel.md
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+++ wiki/panel.md
@@ -1,11 +1,11 @@
 # Panel on opportunistic email encryption #
 
 ## Holger Krekel (Autocrypt), Volker Birk (p≡p), and Neal Walfield (GPG) ##
 
 <video width="1280" height="720" controls="controls">
-<source src="//net2o.de/33c3/panel.mp4">
+<source src="//net2o.de/33c3/panel.mp4" type="video/mp4">
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 </video>
 

Index: wiki/pep.md
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--- wiki/pep.md
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@@ -1,11 +1,11 @@
 # A walk through the inner core of p≡p #
 
 ## Krista Bennett ##
 
 <video width="1280" height="720" controls="controls">
-<source src="//net2o.de/33c3/pep.mp4">
+<source src="//net2o.de/33c3/pep.mp4" type="video/mp4">
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Index: wiki/pep2.md
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--- wiki/pep2.md
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@@ -1,11 +1,11 @@
 # p≡p short introduction #
 
 ## Volker Birk (fdik) ##
 
 <video width="1280" height="720" controls="controls">
-<source src="//net2o.de/33c3/pep2.mp4">
+<source src="//net2o.de/33c3/pep2.mp4" type="video/mp4">
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Index: wiki/pop.md
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--- wiki/pop.md
+++ wiki/pop.md
@@ -1,11 +1,11 @@
 # Advertisement for the Proof of Personhood-Party and project #
 
 ## Linus Gasser and Jovanovic Philipp ##
 
 <video width="1280" height="720" controls="controls">
-<source src="//net2o.de/33c3/pop.mp4">
+<source src="//net2o.de/33c3/pop.mp4" type="video/mp4">
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Index: wiki/sense.md
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--- wiki/sense.md
+++ wiki/sense.md
@@ -1,11 +1,11 @@
 # SENSE a privacy-preserving and secure push service #
 
 ## Linus Lotz ##
 
 <video width="1280" height="720" controls="controls">
-<source src="//net2o.de/33c3/sense.mp4">
+<source src="//net2o.de/33c3/sense.mp4" type="video/mp4">
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Index: wiki/spoof.md
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--- wiki/spoof.md
+++ wiki/spoof.md
@@ -1,11 +1,11 @@
 # Source IP spoofing for anonymization over UDP #
 
 ## Kirils Solovjovs ##
 
 <video width="1280" height="720" controls="controls">
-<source src="//net2o.de/33c3/spoof.mp4">
+<source src="//net2o.de/33c3/spoof.mp4" type="video/mp4">
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Index: wiki/template.sh
==================================================================
--- wiki/template.sh
+++ wiki/template.sh
@@ -5,11 +5,11 @@
 # $TITLE #
 
 ## $author ##
 
 <video width="1280" height="720" controls="controls">
-<source src="//net2o.de/33c3/$filename.mp4">
+<source src="//net2o.de/33c3/$filename.mp4" type="video/mp4">
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 </video>
 

Index: wiki/xolotl.md
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--- wiki/xolotl.md
+++ wiki/xolotl.md
@@ -1,11 +1,11 @@
 # Xolotl : A compact mixnet format with stronger forward secrecy and hybrid anonymity #
 
 ## Jeff Burdges ##
 
 <video width="1280" height="720" controls="controls">
-<source src="//net2o.de/33c3/xolotl.mp4">
+<source src="//net2o.de/33c3/xolotl.mp4" type="video/mp4">
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 </video>