diff --git a/content/Section 1 - Digital Infrapunctures/3-question-1.md b/content/Section 1 - Digital Infrapunctures/3-question-1.md
index a9e31c4..9d046af 100644
--- a/content/Section 1 - Digital Infrapunctures/3-question-1.md	
+++ b/content/Section 1 - Digital Infrapunctures/3-question-1.md	
@@ -4,6 +4,6 @@ Date: 2020-11-01 12:02
 Summary: A video contribution by Deb Verhoeven.
 
 
-<video controls>
+<video controls poster="images/deb-verhoeven-q1.png">
 	<source src="videos/deb-verhoeven-q1.mp4" type="video/mp4">
 </video>
diff --git a/content/Section 1 - Digital Infrapunctures/4-question-2.md b/content/Section 1 - Digital Infrapunctures/4-question-2.md
index 6a35183..273bb7d 100644
--- a/content/Section 1 - Digital Infrapunctures/4-question-2.md	
+++ b/content/Section 1 - Digital Infrapunctures/4-question-2.md	
@@ -3,6 +3,6 @@ Slug: 04-s1-question-2
 Date: 2020-11-01 12:03
 Summary: A video contribution by Deb Verhoeven.
 
-<video controls>
+<video controls poster="images/deb-verhoeven-q2.png">
 	<source src="videos/deb-verhoeven-q2.mp4" type="video/mp4">
 </video>
diff --git a/content/Section 1 - Digital Infrapunctures/5-question-3.md b/content/Section 1 - Digital Infrapunctures/5-question-3.md
index 9e4e960..86ee173 100644
--- a/content/Section 1 - Digital Infrapunctures/5-question-3.md	
+++ b/content/Section 1 - Digital Infrapunctures/5-question-3.md	
@@ -3,6 +3,6 @@ Slug: 05-s1-question-3
 Date: 2020-11-01 12:04
 Summary: A video contribution by Deb Verhoeven.
 
-<video controls>
+<video controls poster="images/deb-verhoeven-q3.png">
 	<source src="videos/deb-verhoeven-q3.mp4" type="video/mp4">
 </video>
diff --git a/content/Section 1 - Digital Infrapunctures/6-question-4.md b/content/Section 1 - Digital Infrapunctures/6-question-4.md
index 140981e..9eaec4a 100644
--- a/content/Section 1 - Digital Infrapunctures/6-question-4.md	
+++ b/content/Section 1 - Digital Infrapunctures/6-question-4.md	
@@ -3,6 +3,6 @@ Slug: 06-s1-question-4
 Date: 2020-11-01 12:05
 Summary: A video contribution by Deb Verhoeven.
 
-<video controls>
+<video controls poster="images/deb-verhoeven-q4.png">
 	<source src="videos/deb-verhoeven-q4.mp4" type="video/mp4">
 </video>
diff --git a/content/Section 1 - Digital Infrapunctures/7-question-5.md b/content/Section 1 - Digital Infrapunctures/7-question-5.md
index 6590e90..83f5455 100644
--- a/content/Section 1 - Digital Infrapunctures/7-question-5.md	
+++ b/content/Section 1 - Digital Infrapunctures/7-question-5.md	
@@ -3,6 +3,6 @@ Slug: 07-s1-question-5
 Date: 2020-11-01 12:06
 Summary: A video contribution by Deb Verhoeven.
 
-<video controls>
+<video controls poster="images/deb-verhoeven-q5.png">
 	<source src="videos/deb-verhoeven-q5.mp4" type="video/mp4">
 </video>
diff --git a/content/Section 2 - Harm in Computational Infrastructures/2-introduction-seda.md b/content/Section 2 - Harm in Computational Infrastructures/2-introduction-seda.md
index 900ebe8..94071c8 100644
--- a/content/Section 2 - Harm in Computational Infrastructures/2-introduction-seda.md	
+++ b/content/Section 2 - Harm in Computational Infrastructures/2-introduction-seda.md	
@@ -17,24 +17,6 @@ We will introduce the work of Gürses and dive with her into the following quest
 * What interventions are possible to mitigate or eliminate this harm?
 * What kind of limitations do you see in the realisation of these interventions?
 
-<!-- They effect different externalities, operate on the basis of specific embedded values and define restrictions of what can be built on top of the infrastructure and what not.  -->
-
-<!-- Through the work of Seda we can understand computational infrastructures as complex entities.  -->
-
-<!-- The introduction to a seminar on *Programmable Infrastructures* points out how infrastructural work is becoming more and more mouldable, resulting in clouds and network providers that offer all sorts of flexible forms of *infrastructures-as-a-service*. And finally, the work around the unfolding of *The Institute for Technology in the Public Interest* create space for the articulation of what technologies for a “public interest” might be when “public interest” is always in-the-making. Links to these works are included at the bottom of this page. -->
-
-<!-- Three of her works that particulary connect to the notion of *digital infrapunctures* are *POTs (Protective Optimization Technologies)*[^pots], *Programmable Infrastructures*[^progammableinfrastructures] and *The Institute for Technology in the Public Interest*[^titipi]. The work on *POTs* provides means for affected parties to address negative impacts of digital systems. It departs from a thorough consideration of multiple forms of harm caused by computational infrastructures. The work introduces a range of activistic, artistic and deployed examples of repurposed technologies that operate as (actual) optimization techniques, trying to correct, shift of expose these harms.  -->
-
-<!-- > PROGRAMMABLE INFRASTRUCTURES: Our concern is that the computational infrastructures are far more than a technological ecosystem alone. Like all infrastructure, they incentivize us to embed their values, and therewith much of their politics in the lower layers of the technology stack. Comparable to the cables and control equipment in electrical networks that determine what can and cannot be connected to it, computational infrastructures embed constraints on what can and cannot be built on top of it, as well as what is accessible to those needing to audit or validate its functionality.[^progammableinfrastructures] -->
-
-<!-- POTS: We propose Protective Optimization Technologies (POTs). POTs, provide means for affected parties to address the negative impacts of systems in the environment, expanding avenues for political contestation. POTs intervene from outside the system, do not require service providers to cooperate, and can serve to correct, shift, or expose harms that systems impose on populations and their environments. We illustrate the potential and limitations of POTs in two case studies: countering road congestion caused by traffic-beating applications, and recalibrating credit scoring for loan applicants. -->
-
-<!-- TITIPI: We want to create space for the articulation of what technologies for a “public interest” might be when “public interest” is always in-the-making. -->
-
-<!-- How can we recognize harm in these digital systems?  -->
-
-<!-- And how to possibly correct, shift or expose these harms? -->
-
 <br>
 
 # Footnotes
diff --git a/content/Section 2 - Harm in Computational Infrastructures/3-question-1.md b/content/Section 2 - Harm in Computational Infrastructures/3-question-1.md
index 16d314a..c70e1e1 100644
--- a/content/Section 2 - Harm in Computational Infrastructures/3-question-1.md	
+++ b/content/Section 2 - Harm in Computational Infrastructures/3-question-1.md	
@@ -3,6 +3,6 @@ Slug: 03-s2-question-1
 Date: 2020-11-01 12:02
 Summary: A video contribution by Seda Gürses.
 
-<video>
+<video controls poster="images/seda-gürses-q1.png">
 	<source src="https://vvvvvvaria.org/archive/2018-02-16-Extratonality/dennis-not-supercut-yet.mp4" type="video/mp4">
 </video>
diff --git a/content/Section 2 - Harm in Computational Infrastructures/4-question-2.md b/content/Section 2 - Harm in Computational Infrastructures/4-question-2.md
index 6d07b6d..81c6b25 100644
--- a/content/Section 2 - Harm in Computational Infrastructures/4-question-2.md	
+++ b/content/Section 2 - Harm in Computational Infrastructures/4-question-2.md	
@@ -3,6 +3,6 @@ Slug: 04-s2-question-2
 Date: 2020-11-01 12:03
 Summary: A video contribution by Seda Gürses.
 
-<video>
+<video controls poster="images/seda-gürses-q2.png">
 	<source src="https://vvvvvvaria.org/archive/2018-02-16-Extratonality/dennis-not-supercut-yet.mp4" type="video/mp4">
 </video>
diff --git a/content/Section 2 - Harm in Computational Infrastructures/5-question-3.md b/content/Section 2 - Harm in Computational Infrastructures/5-question-3.md
index 5a6f2b8..8b95a0b 100644
--- a/content/Section 2 - Harm in Computational Infrastructures/5-question-3.md	
+++ b/content/Section 2 - Harm in Computational Infrastructures/5-question-3.md	
@@ -1,8 +1,8 @@
-Title: Question 3: How can we understand the harm caused by computational infrastructures and the systems which deploy them?
+Title: Question 3: How can we understand the harm caused by digital infrastructures and the systems which deploy them?
 Slug: 05-s2-question-3
 Date: 2020-11-01 12:04
 Summary: A video contribution by Seda Gürses.
 
-<video>
+<video controls poster="images/seda-gürses-q3.png">
 	<source src="https://vvvvvvaria.org/archive/2018-02-16-Extratonality/dennis-not-supercut-yet.mp4" type="video/mp4">
 </video>
diff --git a/content/Section 2 - Harm in Computational Infrastructures/6-question-4.md b/content/Section 2 - Harm in Computational Infrastructures/6-question-4.md
index 9a1adc2..c0b8585 100644
--- a/content/Section 2 - Harm in Computational Infrastructures/6-question-4.md	
+++ b/content/Section 2 - Harm in Computational Infrastructures/6-question-4.md	
@@ -3,6 +3,6 @@ Slug: 06-s2-question-4
 Date: 2020-11-01 12:05
 Summary: A video contribution by Seda Gürses.
 
-<video>
+<video controls poster="images/seda-gürses-q4.png">
 	<source src="https://vvvvvvaria.org/archive/2018-02-16-Extratonality/dennis-not-supercut-yet.mp4" type="video/mp4">
 </video>
diff --git a/content/Section 2 - Harm in Computational Infrastructures/7-question-5.md b/content/Section 2 - Harm in Computational Infrastructures/7-question-5.md
index 6530d3e..1d62154 100644
--- a/content/Section 2 - Harm in Computational Infrastructures/7-question-5.md	
+++ b/content/Section 2 - Harm in Computational Infrastructures/7-question-5.md	
@@ -3,6 +3,6 @@ Slug: 07-s2-question-5
 Date: 2020-11-01 12:06
 Summary: A video contribution by Seda Gürses.
 
-<video>
+<video controls poster="images/seda-gürses-q5.png">
 	<source src="https://vvvvvvaria.org/archive/2018-02-16-Extratonality/dennis-not-supercut-yet.mp4" type="video/mp4">
 </video>
diff --git a/content/Section 3 - Introduction to Bots/2-infrastructural-embodiment.md b/content/Section 3 - Introduction to Bots/2-infrastructural-embodiment.md
index ce11a49..3c73a17 100644
--- a/content/Section 3 - Introduction to Bots/2-infrastructural-embodiment.md	
+++ b/content/Section 3 - Introduction to Bots/2-infrastructural-embodiment.md	
@@ -11,7 +11,7 @@ We will introduce the work of Andreas Hepp through the following questions:
 
 * What are communicative bots and why are they important to study now?
 * What main types of communicative bots are there?
-* How do bots relate to material infrastructures like platforms?
+* How do bots relate to digital infrastructures?
 * How does communication change in the presence of bots?
 * What role do they play in the construction of the social world and what does this say about their relation to power relations in society?
 
diff --git a/content/Section 3 - Introduction to Bots/3-andreas-question-1.md b/content/Section 3 - Introduction to Bots/3-andreas-question-1.md
index 2c632ff..cf1e11c 100644
--- a/content/Section 3 - Introduction to Bots/3-andreas-question-1.md	
+++ b/content/Section 3 - Introduction to Bots/3-andreas-question-1.md	
@@ -3,6 +3,6 @@ Slug: 03-s3-question-1
 Date: 2020-11-01 12:02
 Summary: A video contribution of Andreas Hepp.
 
-<video controls>
+<video controls poster="images/andreas-hepp-q1.png">
 	<source src="https://vvvvvvaria.org/archive/2018-02-16-Extratonality/dennis-not-supercut-yet.mp4" type="video/mp4">
 </video>
\ No newline at end of file
diff --git a/content/Section 3 - Introduction to Bots/4-andreas-question-2.md b/content/Section 3 - Introduction to Bots/4-andreas-question-2.md
index 581199f..c2d4ea0 100644
--- a/content/Section 3 - Introduction to Bots/4-andreas-question-2.md	
+++ b/content/Section 3 - Introduction to Bots/4-andreas-question-2.md	
@@ -3,6 +3,6 @@ Slug: 04-s3-question-2
 Date: 2020-11-01 12:03
 Summary: A video contribution of Andreas Hepp.
 
-<video controls>
+<video controls poster="images/andreas-hepp-q2.png">
 	<source src="https://vvvvvvaria.org/archive/2018-02-16-Extratonality/dennis-not-supercut-yet.mp4" type="video/mp4">
 </video>
\ No newline at end of file
diff --git a/content/Section 3 - Introduction to Bots/5-andreas-question-3.md b/content/Section 3 - Introduction to Bots/5-andreas-question-3.md
index 3275059..16f7bac 100644
--- a/content/Section 3 - Introduction to Bots/5-andreas-question-3.md	
+++ b/content/Section 3 - Introduction to Bots/5-andreas-question-3.md	
@@ -1,8 +1,8 @@
-Title: Question 3: How do bots relate to material infrastructures like platforms?
+Title: Question 3: How do bots relate to digital infrastructures?
 Slug: 05-s3-question-3
 Date: 2020-11-01 12:04
 Summary: A video contribution of Andreas Hepp.
 
-<video controls>
+<video controls poster="images/andreas-hepp-q3.png">
 	<source src="https://vvvvvvaria.org/archive/2018-02-16-Extratonality/dennis-not-supercut-yet.mp4" type="video/mp4">
 </video>
\ No newline at end of file
diff --git a/content/Section 3 - Introduction to Bots/6-andreas-question-4.md b/content/Section 3 - Introduction to Bots/6-andreas-question-4.md
index a557d68..4b69a65 100644
--- a/content/Section 3 - Introduction to Bots/6-andreas-question-4.md	
+++ b/content/Section 3 - Introduction to Bots/6-andreas-question-4.md	
@@ -3,6 +3,6 @@ Slug: 06-s3-question-4
 Date: 2020-11-01 12:05
 Summary: A video contribution of Andreas Hepp.
 
-<video controls>
+<video controls poster="images/andreas-hepp-q4.png">
 	<source src="https://vvvvvvaria.org/archive/2018-02-16-Extratonality/dennis-not-supercut-yet.mp4" type="video/mp4">
 </video>
\ No newline at end of file
diff --git a/content/Section 3 - Introduction to Bots/7-andreas-question-5.md b/content/Section 3 - Introduction to Bots/7-andreas-question-5.md
index a941965..b29e684 100644
--- a/content/Section 3 - Introduction to Bots/7-andreas-question-5.md	
+++ b/content/Section 3 - Introduction to Bots/7-andreas-question-5.md	
@@ -3,6 +3,6 @@ Slug: 07-s3-question-5
 Date: 2020-11-01 12:06
 Summary: A video contribution of Andreas Hepp.
 
-<video controls>
+<video controls poster="images/andreas-hepp-q5.png">
 	<source src="https://vvvvvvaria.org/archive/2018-02-16-Extratonality/dennis-not-supercut-yet.mp4" type="video/mp4">
 </video>
\ No newline at end of file
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