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IDProjectCategoryView StatusLast Update
0000050WirecastBug Reportpublic2020-06-30 12:22
Reportergregk Assigned To 
Status resolvedResolutionfixed 
Summary0000050: Alpha Channel High CPU load

After upgrading to Wirecast 10, the use of ProRes video with alpha channels for graphics overlays is causing significant CPU utilisation. This behaviour is new in Wirecast 10, and was not a problem with Wirecast 9. Impact: Existing graphics overlays that previously worked without any problems cause so much additional load that streaming and/or recording fails. This bug was initially reported in 0000029 - however, that issue is mainly focussed on the Rendezvous impact. This issue is also observed in the video.

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related to 0000029 acknowledged Rendezvous Excessive CPU Load 



2019-07-03 18:29

manager   ~0000141

Recent feedback from engineering:

QA can you repro on a similar machine. Do you get drop frames and how does cpu usage compare to older versions?

Issue History

Date Modified Username Field Change
2018-08-29 18:17 gregk New Issue
2019-07-03 18:29 sandyh Note Added: 0000050
2020-06-29 05:03 gregk Reproducibility N/A => always
2020-06-29 05:03 gregk Summary WIRE-15021 Alpha Channel High CPU load Reproducible #00599679 #P => Alpha Channel High CPU load
2020-06-29 05:03 gregk Ticket(s) => 00599679
2020-06-29 05:03 gregk Jira => WIRE-15021
2020-06-29 05:05 gregk Youtube Link =>
2020-06-29 05:05 gregk Relationship added related to 0000029
2020-06-29 05:05 gregk Description Updated View Revisions
2020-06-29 11:28 gregk Description Updated View Revisions
2020-06-29 11:30 gregk Description Updated View Revisions
2020-06-29 11:37 gregk Assigned To => gregk
2020-06-29 11:37 gregk Status acknowledged => resolved
2020-06-29 11:37 gregk Resolution open => fixed
2020-06-30 12:22 gregk Assigned To gregk =>