Automatic change detection / deduplication in timeline or stream

[kpreid]

Is your feature request related to a problem? Please describe.
My application code logs various things every frame. The result of this in the Rerun viewer is a boring, uninformative timeline. I think this space could be used better:

Describe the solution you'd like
Either in the viewer or the SDK, automatically detect when logged data is identical to the data in the previous timepoint, and distinguish in the timeline the points where values changed versus those where they did not. This distinction could be made by color, or by some kind of background box/line connecting identical points.

Describe alternatives you've considered
This can of course be done in application code, but it would often requires maintaining additional state. I think having Rerun do it “out of the box” would be a useful addition.

[teh-cmc]

Beyond the UI, the general idea of detecting and optimizing out duplicate cells can lead to many storage and compute performance improvements.
Related:

• re_datastore: generalized deduplication #446