diff --git a/_includes/metaog.html b/_includes/metaog.html
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/_includes/site-feature.html b/_includes/site-feature.html
index 4775fa14a15b835e4c1cf3a2464b981d69db6661..ed494558276f760abf739815938a1dbf04ac3215 100644
--- a/_includes/site-feature.html
+++ b/_includes/site-feature.html
@@ -25,25 +25,35 @@
   {% assign feature_image = collectiondata.feature_image -%}
 {% endif -%}
 
-{% if feature_text or feature_image -%}
-  {% if feature_image contains 'http' -%}
-    <div class="feature"{% if feature_image %} style="background-image: url({{ feature_image }})"{% endif %}>
-        <div class="container  typeset">
-          {{ feature_text | markdownify }}
-        </div>
-    </div>
+{% if page.layout == "video" -%}
+  {%- assign realslug = page.url | split:'/' | last -%}
+  {% capture feature_image %}https://video.chaotikum.net/thumbnails/{{realslug}}_play.png{% endcapture -%}
+  {% capture image %}https://video.chaotikum.net/thumbnails/{{realslug}}_play.png{% endcapture -%}
+{% endif -%}
+
+{% if nofeature %}
+
+{% else %}
+  {% if feature_text or feature_image -%}
+    {% if feature_image contains 'http' -%}
+      <div class="feature"{% if feature_image %} style="background-image: url({{ feature_image }})"{% endif %}>
+          <div class="container  typeset">
+            {{ feature_text | markdownify }}
+          </div>
+      </div>
+    {% else -%}
+      <div class="feature"{% if feature_image %} style="background-image: url({{site.baseurl}}{{ feature_image }})"{% endif %}>
+          <div class="container  typeset">
+            {{ feature_text | markdownify }}
+          </div>
+      </div>
+    {% endif -%}
   {% else -%}
-    <div class="feature"{% if feature_image %} style="background-image: url({{site.baseurl}}{{ feature_image }})"{% endif %}>
-        <div class="container  typeset">
-          {{ feature_text | markdownify }}
-        </div>
+  {% assign feature_image = site.default-feature -%}
+  <div class="feature"{% if feature_image %} style="background-image: url({{site.baseurl}}{{ feature_image }})"{% endif %}>
+    <div class="container  typeset">
+      {{ feature_text | markdownify }}
     </div>
-  {% endif -%}
-{% else -%}
-{% assign feature_image = site.default-feature -%}
-<div class="feature"{% if feature_image %} style="background-image: url({{site.baseurl}}{{ feature_image }})"{% endif %}>
-  <div class="container  typeset">
-    {{ feature_text | markdownify }}
   </div>
-</div>
+  {% endif -%}
 {% endif -%}
diff --git a/_includes/site-header.html b/_includes/site-header.html
index 5d4f0f0e06d60c49ea13dafce12698e2b35685fb..1eca858f7d59617afe40770682ac05811b59d7f7 100644
--- a/_includes/site-header.html
+++ b/_includes/site-header.html
@@ -16,13 +16,13 @@
   </div>
 
 
-   {% if nofeature %}
-    <!-- no feature -->
+  {% include site-feature.html %}
+  {% if nofeature %}
+
   {% else %}
-    {% include site-feature.html %}
     <div class="statusmobile" style="width: 80%; margin:0 auto; margin-top: -45px; background-color: #FAFAFA;">
-  {% include space-status-mobile.html %}
-</div>
+      {% include space-status-mobile.html %}
+    </div>
   {% endif %}
 
   {% if page.layout == "video" -%}
diff --git a/_includes/twittercard.html b/_includes/twittercard.html
index 42a33b36193cc356419e8db1d000258843b2f1b5..3edc5b47f6f58781413a36872d5d281b444c4db4 100644
--- a/_includes/twittercard.html
+++ b/_includes/twittercard.html
@@ -12,17 +12,15 @@
   {% assign feature_image = page.image %}
 {% endif %}
 
-  {% if page.layout == "video" -%}
-    {%- assign realslug = page.url | split:'/' | last -%}
-    {% capture feature_image %}https://video.chaotikum.net/thumbnails/{{realslug}}.jpg{% endcapture -%}
-  {% endif -%}
-
 {% if feature_image %}
   {% if feature_image contains '://' %}
+  <p>a</p>
     <meta name="twitter:image" content="{{feature_image}}">
   {% else %}
+  <p>b</p>
     <meta name="twitter:image" content="{{site.url}}{{site.baseurl}}{{feature_image}}">
   {% endif %}
 {% else %}
+<p>c</p>
   <meta name="twitter:image" content="{{site.url}}/{{site.baseurl}}{{ site.default-feature }}">
 {% endif %}
diff --git a/_layouts/video.html b/_layouts/video.html
index c527eb7e93741d8946a2f4758f6fc3f63a20455d..154c46585a80bb8a698dd286e17bcb107ef86726 100644
--- a/_layouts/video.html
+++ b/_layouts/video.html
@@ -4,8 +4,6 @@ layout: default
 
 {% include site-header.html %}
 
-{% include twittercard.html %}
-
 {% capture nowunix %}{{'now' | date: '%s'}}{% endcapture %}
 
 {% capture title %}
diff --git a/_media/2022-05-18-10-jahre.md b/_media/2022-05-18-10-jahre.md
index 74c3d1dc20d02824d0fab25f7ae1f47619e70244..2b6308f76c967424eba2e43e5ea8c71b8a94a3cb 100644
--- a/_media/2022-05-18-10-jahre.md
+++ b/_media/2022-05-18-10-jahre.md
@@ -7,6 +7,7 @@ room: Parkplatz
 title:  "10 Jahre Chaotikum e.V. - Grillparty"
 license: "CC-BY-NC"
 uid: 5e6b423d-9315-4df5-aa9f-66ae0969952c
+image: "https://video.chaotikum.net/thumbnails/2022-05-18-10-jahre_play.png"
 ticket_id: 1173
 yt: "https://www.youtube.com/watch?v=5vmi21ztI8k"
 mccc: "https://media.ccc.de/v/2022-05-18-10-jahre-chaotikum-e-v-grillparty"
diff --git a/_media/2022-11-11-digitaler-minimalismus-fuer-kreativitaet.md b/_media/2022-11-11-digitaler-minimalismus-fuer-kreativitaet.md
index 9fb4b2d4599224cb04248a27b86c7960c58bb96b..b60e23c11b0df04cb7c34999d4a9113f72bce3a4 100644
--- a/_media/2022-11-11-digitaler-minimalismus-fuer-kreativitaet.md
+++ b/_media/2022-11-11-digitaler-minimalismus-fuer-kreativitaet.md
@@ -11,6 +11,7 @@ fahrplan_url: https://2022.nook-luebeck.de/talks/digitaler-minimalismus-fuer-kre
 image: "https://video.chaotikum.net/nook22/digitaler-minimalismus-fuer-kreativitaet.jpeg"
 #https://www.uuidgenerator.net/
 uid: a5eb5a79-7ea9-4e14-b21b-a66b05dee110
+image: ""
 yt: ""
 mccc: ""
 file: ""
diff --git a/_media/2022-11-11-funktionelle-neurologische-stoerungen.md b/_media/2022-11-11-funktionelle-neurologische-stoerungen.md
index f79d177cd141c838fd057098a94bc8491aaa5398..13e99e4eed1b16ccc4f9930ef6deef09b2e7c339 100644
--- a/_media/2022-11-11-funktionelle-neurologische-stoerungen.md
+++ b/_media/2022-11-11-funktionelle-neurologische-stoerungen.md
@@ -10,6 +10,7 @@ persons:
 fahrplan_url: https://2022.nook-luebeck.de/talks/funktionelle-neurologische-stoerungen/
 #https://www.uuidgenerator.net/
 uid: 3b44c586-c66c-495d-beaf-725d07b9cc18
+image: ""
 yt: ""
 mccc: ""
 file: ""
diff --git a/_media/2022-11-11-musikvideos-durch-ki.md b/_media/2022-11-11-musikvideos-durch-ki.md
index 66ff0c5c227a47f7ee8dd546a536800dcac2cc95..c175dd4fcd29dd031fb6dbe1464b66781f31a3e8 100644
--- a/_media/2022-11-11-musikvideos-durch-ki.md
+++ b/_media/2022-11-11-musikvideos-durch-ki.md
@@ -12,6 +12,7 @@ fahrplan_url: https://2022.nook-luebeck.de/talks/musikvideos-durch-ki/
 image: "https://video.chaotikum.net/nook22/musikvideos-durch-ki.jpeg"
 #https://www.uuidgenerator.net/
 uid: c1af1236-2609-4201-b51f-274108bcc636
+image: ""
 yt: ""
 mccc: ""
 file: ""
diff --git a/_media/2022-11-11-nicht-invasive-hirnstimulation.md b/_media/2022-11-11-nicht-invasive-hirnstimulation.md
index 9193641a7a42fe721090335f0b37716b0844eb7f..bbfb31cdd728c86a8e6e3abd8dba8792f0a83d50 100644
--- a/_media/2022-11-11-nicht-invasive-hirnstimulation.md
+++ b/_media/2022-11-11-nicht-invasive-hirnstimulation.md
@@ -10,6 +10,7 @@ persons:
 fahrplan_url: https://2022.nook-luebeck.de/talks/nicht-invasive-hirnstimulation/
 #https://www.uuidgenerator.net/
 uid: e651ba3b-2e08-4887-9232-e2531e703d3f
+image: ""
 yt: ""
 mccc: ""
 file: ""
diff --git a/_media/2022-11-12-aleksis-das-schul-informations-system.md b/_media/2022-11-12-aleksis-das-schul-informations-system.md
index 120788033c4397f4118ddc6debf7278d7989bec1..09fa65f509e3bf18447ab49eda4d7c76804ff83f 100644
--- a/_media/2022-11-12-aleksis-das-schul-informations-system.md
+++ b/_media/2022-11-12-aleksis-das-schul-informations-system.md
@@ -12,6 +12,7 @@ persons:
 fahrplan_url: https://nook-luebeck.de/talks/aleksis-das-schul-informations-system/
 #https://www.uuidgenerator.net/
 uid: 3d420d08-60eb-47c0-ab6a-11fd453ae699
+image: ""
 yt: "https://www.youtube.com/watch?v=xMZwADwdSuY"
 mccc: "https://media.ccc.de/v/aleksis-das-schul-informations-system"
 file: "https://video.chaotikum.net/nook22/aleksis-das-schul-informations-system.mov"
diff --git a/_media/2022-11-12-capture-the-flag.md b/_media/2022-11-12-capture-the-flag.md
index cdd9f4e6bba941dca2fce0d25e2f5ce61bdac542..ab74cfc3cae9ecd79edc74e25a5c081c19d8fac0 100644
--- a/_media/2022-11-12-capture-the-flag.md
+++ b/_media/2022-11-12-capture-the-flag.md
@@ -11,6 +11,7 @@ persons:
 fahrplan_url: https://nook-luebeck.de/talks/how-to-capture-the-flag/
 #https://www.uuidgenerator.net/
 uid: 707df1f4-1d28-45ca-bf57-0578bcc009c9
+image: ""
 yt: "https://www.youtube.com/watch?v=IO4AewizLVI"
 mccc: "https://media.ccc.de/v/how-to-capture-the-flag"
 file: "https://video.chaotikum.net/nook22/how-to-capture-the-flag.mov"
diff --git a/_media/2022-11-12-detektion-von-plaque-in-gefaessen-mit-ki.md b/_media/2022-11-12-detektion-von-plaque-in-gefaessen-mit-ki.md
index da1d3c40f5492684366da72443700c34da5e4cc6..8b5bda9a8e14347ef91b59718f2c6411b93f0292 100644
--- a/_media/2022-11-12-detektion-von-plaque-in-gefaessen-mit-ki.md
+++ b/_media/2022-11-12-detektion-von-plaque-in-gefaessen-mit-ki.md
@@ -10,6 +10,7 @@ persons:
 fahrplan_url: https://2022.nook-luebeck.de/talks/detektion-von-plaque-in-gefaessen-mit-ki/
 #https://www.uuidgenerator.net/
 uid: c4434d9c-81f9-4942-9baf-88f2e5fd9fdc
+image: ""
 yt: ""
 mccc: ""
 file: ""
diff --git a/_media/2022-11-12-kinder-machen-ein-howto.md b/_media/2022-11-12-kinder-machen-ein-howto.md
index 9dbd7d33d1d1e67745cab3b44467c4917c7c5292..f82fcceb69840d39093082837c4e55f9f8e15359 100644
--- a/_media/2022-11-12-kinder-machen-ein-howto.md
+++ b/_media/2022-11-12-kinder-machen-ein-howto.md
@@ -10,6 +10,7 @@ persons:
 fahrplan_url: https://2022.nook-luebeck.de/talks/kinder-machen-ein-howto/
 #https://www.uuidgenerator.net/
 uid: 909b7e64-0092-434c-8219-9c126d5503e1
+image: ""
 yt: ""
 mccc: ""
 file: ""
diff --git a/_media/2022-11-12-openbikesensor.md b/_media/2022-11-12-openbikesensor.md
index e46fb83794b3fe99eeb647e5e9f159be096f2d50..2b723a6d511056e173cce01f281e235796917310 100644
--- a/_media/2022-11-12-openbikesensor.md
+++ b/_media/2022-11-12-openbikesensor.md
@@ -11,6 +11,7 @@ persons:
 fahrplan_url: https://2022.nook-luebeck.de/talks/openbikesensor/
 #https://www.uuidgenerator.net/
 uid: 50f211c1-8765-47b6-a4a2-c69a274eecea
+image: ""
 yt: ""
 mccc: ""
 file: ""
diff --git a/_media/2022-11-12-thw-lasst-uns-uebers-machen-sprechen.md b/_media/2022-11-12-thw-lasst-uns-uebers-machen-sprechen.md
index febc5ae2bfeca4d19d7b49bc2c31906ffd0956f0..f1a6b201154700ed7d6ff9ac5dcf26809aa121d4 100644
--- a/_media/2022-11-12-thw-lasst-uns-uebers-machen-sprechen.md
+++ b/_media/2022-11-12-thw-lasst-uns-uebers-machen-sprechen.md
@@ -9,6 +9,7 @@ persons:
 - "Juljan Bouchagiar"
 fahrplan_url: https://2022.nook-luebeck.de/talks/thw---lasst-uns-uebers-machen-sprechen/
 #https://www.uuidgenerator.net/
+image: ""
 uid: 8f561e26-d153-4aaf-9749-331e90be0ed4
 yt: ""
 mccc: ""
diff --git a/_media/2022-12-29-i-like-p5.md b/_media/2022-12-29-i-like-p5.md
index 8c914c539e4834b1650369c7c9f3ccfe2f6d891a..bdca981e676a8dcf5d25110f6509d390cb5a2ea9 100644
--- a/_media/2022-12-29-i-like-p5.md
+++ b/_media/2022-12-29-i-like-p5.md
@@ -7,6 +7,7 @@ persons:
 - "Fabi"
 #https://www.uuidgenerator.net/
 uid: 67dbaaf2-a392-40da-985f-3f2750326bde
+image: ""
 ticket_id: 1346
 yt: "https://www.youtube.com/watch?v=6AJwHBxa6jo"
 mccc: "https://media.ccc.de/v/2022-12-29-fabi-likes-p5"
diff --git a/_media/2022-12-29-jgiven-und-asciidoc-reporting.md b/_media/2022-12-29-jgiven-und-asciidoc-reporting.md
index 0b573f69eaf697d88d0094223a62d64ab3c33193..56dcad52dd088580fa4dec768a49a7839fc27b56 100644
--- a/_media/2022-12-29-jgiven-und-asciidoc-reporting.md
+++ b/_media/2022-12-29-jgiven-und-asciidoc-reporting.md
@@ -6,6 +6,7 @@ persons:
 - "Johannes Thorn"
 #https://www.uuidgenerator.net/
 uid: de51321c-547a-425e-b1bc-5b51f7e05e9c
+image: ""
 ticket_id: 1353
 yt: "https://www.youtube.com/watch?v=sFhA3zMYEIA"
 mccc: "https://media.ccc.de/v/2022-12-29-johannes-thorn-uber-jgiven-und-asciidoc-reporting"
diff --git a/_media/2022-12-29-linux-user-namespaces-und-der-unshare-befehl.md b/_media/2022-12-29-linux-user-namespaces-und-der-unshare-befehl.md
index d64eecdbca4d872eb3acdcf59339bf893369d40f..1d40ac6098cecb233f6547dd8d49ff51e14dd90a 100644
--- a/_media/2022-12-29-linux-user-namespaces-und-der-unshare-befehl.md
+++ b/_media/2022-12-29-linux-user-namespaces-und-der-unshare-befehl.md
@@ -7,6 +7,7 @@ persons:
 license: CC-BY-NC-ND-40
 #https://www.uuidgenerator.net/
 uid: 1fc7db56-5c9d-452b-ad51-b43894f77c42
+image: ""
 ticket_id: 1350
 yt: "https://www.youtube.com/watch?v=zE07kstdvzc"
 mccc: "https://media.ccc.de/v/2022-12-29-neoraider-uber-linux-user-namespaces-und-den-unshare-befehl"
diff --git a/_media/2022-12-29-nook22.md b/_media/2022-12-29-nook22.md
index 3c1ac311973e277ff5ea9b7519e044286bb9c94b..10db4ceb97a2746f460530aa7eaac4cdc9a4aefd 100644
--- a/_media/2022-12-29-nook22.md
+++ b/_media/2022-12-29-nook22.md
@@ -6,6 +6,7 @@ persons:
 - "TVLuke"
 #https://www.uuidgenerator.net/
 uid: 5c5cc720-c18e-414e-a069-7acaa030c88b
+image: ""
 ticket_id: 1352
 yt: "https://www.youtube.com/watch?v=KA9-07DPPjg"
 mccc: "https://media.ccc.de/v/2022-12-29-tvluke-uber-die-zahlen-2c-daten-2c-fakten-der-nook-2022"
diff --git a/_media/2022-12-29-openbikesensor-auswertung-mittels-jupyter-notebooks.md b/_media/2022-12-29-openbikesensor-auswertung-mittels-jupyter-notebooks.md
index 72377d9b0af1007f728273d266a32baf8f1588cc..154b9b43cd85fea98a68d4627d98d7ef1a06dfd3 100644
--- a/_media/2022-12-29-openbikesensor-auswertung-mittels-jupyter-notebooks.md
+++ b/_media/2022-12-29-openbikesensor-auswertung-mittels-jupyter-notebooks.md
@@ -6,6 +6,7 @@ persons:
 - "Dennis"
 #https://www.uuidgenerator.net/
 uid: a075bb10-3c8d-4090-af90-e4857749149b
+image: ""
 ticket_id: 1354
 yt: "https://www.youtube.com/watch?v=5EvD_gOSksk"
 mccc: "https://media.ccc.de/v/2022-12-29-dennis-uber-openbikesensor-auswertung-mittels-jupyter-notebooks"
diff --git a/_media/2022-12-29-simon-tathams-portable-puzzle-collection-und-loopy.md b/_media/2022-12-29-simon-tathams-portable-puzzle-collection-und-loopy.md
index 276878aee5e264d5c121bb96af3d5156f9ef4cf9..7efe840309e8d10659b38760fd97efe9448981e0 100644
--- a/_media/2022-12-29-simon-tathams-portable-puzzle-collection-und-loopy.md
+++ b/_media/2022-12-29-simon-tathams-portable-puzzle-collection-und-loopy.md
@@ -6,6 +6,7 @@ persons:
 - "Jakob"
 #https://www.uuidgenerator.net/
 uid: c7f1466b-3445-4d44-bae4-49cb0706e7be
+image: ""
 ticket_id: 1351
 yt: "https://www.youtube.com/watch?v=IP4MIEZvkmg"
 mccc: "https://media.ccc.de/v/2022-12-29-jakob-uber-simon-tatham-27s-portable-puzzle-collection-und-loopy"
diff --git a/_media/2023-03-22-doctoolchain-schnell-erklaert-aber-maechtig.md b/_media/2023-03-22-doctoolchain-schnell-erklaert-aber-maechtig.md
index f0f2ca072a9ed83d655d963b6368a79c11c09618..e598e7a93dfc7bb838774c37c8cb0af5e4c4a514 100644
--- a/_media/2023-03-22-doctoolchain-schnell-erklaert-aber-maechtig.md
+++ b/_media/2023-03-22-doctoolchain-schnell-erklaert-aber-maechtig.md
@@ -6,6 +6,7 @@ persons:
 - "Johannes Thorn"
 #https://www.uuidgenerator.net/
 uid: 38473793-9e70-41ce-9349-e683dea15d72
+image: ""
 ticket_id: 1367
 yt: "https://www.youtube.com/watch?v=4GqmYf6I4DY"
 file: "https://video.chaotikum.net/5min/2023-03-22/2023-03-22-johannes-thorn-uber-docttoolschain-schnell-erklart-aber-machtig.mov"
diff --git a/_media/2023-03-22-end-to-end-arguments-im-systemdesign.md b/_media/2023-03-22-end-to-end-arguments-im-systemdesign.md
index 5e17f13ae164c06bd7ce49b5f1bad69bc1a0383d..bafd8df5e5323542313156c35c577f60d8ec385c 100644
--- a/_media/2023-03-22-end-to-end-arguments-im-systemdesign.md
+++ b/_media/2023-03-22-end-to-end-arguments-im-systemdesign.md
@@ -6,6 +6,7 @@ persons:
 - "Jakob"
 #https://www.uuidgenerator.net/
 uid: 233a8fa9-247b-406d-b70d-88d03ba870d9
+image: ""
 ticket_id: 1375
 yt: "https://www.youtube.com/watch?v=jNAcW5j8qeM"
 file: "https://video.chaotikum.net/5min/2023-03-22/2023-03-22-jakob-uber-end-to-end-arguments-im-systemdesign.mov"
diff --git a/_media/2023-03-22-kraehen.md b/_media/2023-03-22-kraehen.md
index 48c59835558e4eb8e37de14fc5b09c19ecbcea02..1dffe3db73eaf593d21fb464bc6610529c16b6d8 100644
--- a/_media/2023-03-22-kraehen.md
+++ b/_media/2023-03-22-kraehen.md
@@ -6,6 +6,7 @@ persons:
 - "Svø"
 #https://www.uuidgenerator.net/
 uid: 8c14004d-78ad-43ec-a72a-239179e6e9d3
+image: "https://video.chaotikum.net/thumbnails/2023-03-22-kraehen_play.png"
 ticket_id: 1372
 yt: "https://www.youtube.com/watch?v=WHHr_d5GOHs"
 file: "https://video.chaotikum.net/5min/2023-03-22/2023-03-22-sv-c3-b8-uber-krahen-e2-99-a5.mov"
diff --git a/_media/2023-05-12-baumbilanzen-befreien.md b/_media/2023-05-12-baumbilanzen-befreien.md
index 5e0295a3483301bf3c5b1f27ae6d2a4a6245248d..3d83a282e575658637d6eacf7c8c4558603fc25e 100644
--- a/_media/2023-05-12-baumbilanzen-befreien.md
+++ b/_media/2023-05-12-baumbilanzen-befreien.md
@@ -6,6 +6,7 @@ persons:
 - "TVLuke"
 #https://www.uuidgenerator.net/
 uid: a1d32bbd-7f47-4a9f-83dd-c2e62d1f67f9
+image: "https://video.chaotikum.net/thumbnails/2023-05-12-baumbilanzen-befreien_play.png"
 ticket_id: 1377
 event: eb785692-6bb0-4aac-aa7a-d48c87507da4
 yt: "https://www.youtube.com/watch?v=DzV5UAwYQIE"