Add argument max workers for multiprocessing in create_labeled_video#3143
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AlexEMG merged 1 commit intoDeepLabCut:mainfrom Nov 12, 2025
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…video This parameter can be used to limit the RAM usage when the user is processing many videos on multiple cores.
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AlexEMG
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Nov 12, 2025
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Add argument
max_workersto limit the number of processes spawned increate_labeled_video.The default behavior remains the same: when using multiprocessing, the number of spawned processes is
min(cpu_cores, n_videos).For some users that are processing many videos on a machine with many cores, the large number of simultaneous processes can drastically increase RAM-usage, especially for high resolution videos. Adding the
max_workersparameter helps to the user to mitigate this.Some profiling results:
The effects of limiting the max number of workers to 4 on a machine with 20 cores.