0000050: Alpha Channel High CPU load

ID	Project	Category	View Status	Date Submitted	Last Update

0000050	Wirecast	Bug Report	public	2018-08-29 18:17	2020-06-30 12:22

Reporter	gregk	Assigned To
Priority	normal	Severity	minor	Reproducibility	always
Status	resolved	Resolution	fixed

Summary	0000050: Alpha Channel High CPU load
Description	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.
Tags	No tags attached.

Ticket(s)	00599679
Jira	WIRE-15021
Forum Link
Youtube Link	https://youtu.be/bZoLxVjLioM

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	=> https://youtu.be/bZoLxVjLioM
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 =>

sandyh 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?