[v1.22.7] crash when screencasting (Non-monotonic timestamps)

[bastianilso]

I am trying to screencast the sample scene from Unity, but it seems like the timestamps of eye1 and eye0 causes pupil capture to crash.

The crash happens when I activate the recording in pupil capture either manually or if i activate it remotely from unity. Previewing the unity screencast and eyes prior to recording works fine.

Might be related to the fix in 2bd9007 but given that this is with Pupil labs v1.22.7, i guess its a different issue somehow.

[papr]

@bastianilso Hi, thank you for reporting this issue. It looks like the hmd-eyes time sync adjusted the "unity clock" by such a high amount that the ith timestamp was larger than the i+1th timestamp.

We are looking into options for handling this kind of edge case.

[papr]

@bastianilso After further looking into this issue, it looks like TimeSync has been triggered during the recording. Have you triggered it manually? Or was there a disconnect? Also, how much time passed between the connection event and the recording start?

[bastianilso]

@papr can't tell - I was just running the example called ScreenCastDemoScene.unity from the Hmd-Eyes.VR.v1.1.unitypackage in hmd-eyes and this was the result. Today I tried importing the ScreenCast Camera.prefab into a new Unity scene and that worked fine. So I guess it is something in the ScreenCastDemoScene.unity that is causing it.

[papr]

#1829 will handle this issue gracefully and stop the recording. Please let us know if you are able to replicate the issue with the imported prefab.