more video stuff, preview images in overview

_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"

_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"

_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"

_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"

_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"

_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"