Add argument max workers for multiprocessing in create_labeled_video - #3143
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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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November 11, 2025 09:59
AlexEMG
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Nov 12, 2025
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Add argument max_workers to limit the number of processes spawned in create_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_workers parameter 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.