[MH-12907] Fix segmentation default job load - Opencast

Details

Severity:
Performance
Steps to reproduce:

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This patch fixes the default job load of the video segmentation where
the actual default, the configuration and the documentation where not
matching.

Note that this patch also slightly lowers the job load since the
operation is single-threaded, non-parallel and involves neither video
nor audio encoding.

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This patch fixes the default job load of the video segmentation where the actual default, the configuration and the documentation where not matching. Note that this patch also slightly lowers the job load since the operation is single-threaded, non-parallel and involves neither video nor audio encoding.