PX4's Flight Review is great, as it provides amazing graphs / detailed overview of the ULog generated from PX4.
However, often it helps to have a video side-by-side with the graph, to actually re-play the moment more visually. Which is already supported for iNAV and Betaflight, as shown here.
The viewer GUI chrome app that directly outputs rendered video can be found here.
And a CLI option that can export log data as a transparent background PNG images can be found here
The basic flight log analytics will be done similarly to the existing Flight Review code, which is open source.
And the Youtube video embedded player will be available at the top (or a side), and the graphs will be visible underneath, which can be scrolled to specific timestamps user is interested in.