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2020-05-05 04:04:26 -0500 received badge  Popular Question (source)
2016-01-13 05:17:13 -0500 asked a question Python & OpenCV 3.1: imshow fail when called in different thread

Hi guys,

I'm trying to build a multi-threading application. Each thread captures a video and display each frame of the video with imshow till the end. However, the script fails with:

xcb] Unknown request in queue while dequeuing [xcb] Most likely this is a multi-threaded client and XInitThreads has not been called [xcb] Aborting, sorry about that. python: ../../src/xcb_io.c:179: dequeue_pending_request: assertion "!xcb_xlib_unknown_req_in_deq" failed.

Any idea on how to solve this with Python?