Chapter Graphs
Chapter summary generation is working as well as Chapter Graphs. I went with graphs per chapter as the Graph of the whole hour-long episode was either too generic or a bit overwhelming.
Will reconsider an "overview" graph to let you then drill into topics.
From the Episode view:
Open a single Chapter
The graph is zoomable. You can also hover over a link to see the relation between nodes
The devil is in the details links:
Click a node to view lines in the video where it's mentioned
Click in the transcript to jump to that frame of the video
Click a node to select it, it will show a green [+] sign
Click high-lighted node a second time to expand it:
Currently the expansion is generated on the fly, in context of the current topic. If you close the chapter it will disappear though, but also get regenerated when clicked again. I need to improve this to show pre-generated links again from the DB / cache as this quickly gets unwieldy.