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strawlab / strand-braid

Live, low-latency 2D and 3D tracking from single or multiple high-speed cameras
https://strawlab.org/braid/
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in Braid, cameras cannot be synchronized more than once #1

Closed elhananby closed 3 years ago

elhananby commented 3 years ago

Hi everyone, I had this issue a few times recently, where Braid would crash with this error message: thread 'main' panicked at 'Received data twice: camera=Basler_23088879, orig frame=10921. new frame=10921', flydra2/src/bundled_data.rs:136:13 note: run with 'RUST_BACKTRACE=1' environment variable to display a backtrace Error: channel is empty and disconnected Caused by: channel is empty and disconnected Jan 22 12:21:47.171 ERROR flydra2_mainbrain: done listening for trigger clock data: sender hung up.

Thanks, Elhanan

astraw commented 3 years ago

Could it be that you synchronized the cameras more than once upon running Braid? In theory this should work, in reality there are still bugs here, I'm afraid.

astraw commented 3 years ago

Also, could the set of cameras in the calibration be different than the set of currently connected cameras? I think might also result in this error. Again, this should work but in reality there are likely bugs with this still.

elhananby commented 3 years ago

Could it be that you synchronized the cameras more than once upon running Braid? In theory this should work, in reality there are still bugs here, I'm afraid.

Yes, I think that's the issue - i didn't have time to test it too much yesterday, but it does seem like that this only happen if I do the camera synchronization more than once. Should I keep this thread as an open bug, or close it for now?

astraw commented 3 years ago

I renamed the bug. Let's keep it open until it is fixed.

astraw commented 3 years ago

As of release 0.10.0, Braid automatically synchronizes the cameras at program start and there is no need (or support) for resynchronizing them. Therefore, I also removed the synchronize button from the UI. 14ba9b1d7571f8d60466686644314ffe8232ef8c