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vMix API impair Render Time
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Hello Folks, i found a reproducible phenomenon using the vMix API. In my basketball setup, i send the scoreboard data (HomePoints, AwayPoints, GameClock, Quarter, ShotClock) directly in to the vMix API over network from another computer. Everytime when i start to send the data into the API, my render time starts up to increase up to 120ms, but just for the tenth of a second. My whole production is starting up to drop frames. The FPS decrease to 38-47 FPS. The CPU is chilling, just see the attachment.  Bildschirmfoto 2019-06-03 um 14.58.43.png (3,330kb) downloaded 29 time(s).Maybe admin can help me out? Best Marvin
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Rank: Administration
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Joined: 1/13/2010(UTC) Posts: 5,214  Location: Gold Coast, Australia Was thanked: 4301 time(s) in 1523 post(s)
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Hi,
When updating multiple fields, it is important to call the shortcut PauseRender on the title input
and then ResumeRender after updating all the data.
This will result in a single render of all the fields at once, rather than one at a time.
Regards,
Martin
vMix
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 2 users thanked admin for this useful post.
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Joined: 5/20/2015(UTC) Posts: 493  Location: Copenhagen, Denmark Thanks: 389 times
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Martin, how about if you update all fields in one (batch) command via API? Do you still need to use PauseRender and ResumeRender?
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Rank: Administration
Groups: Administrators
Joined: 1/13/2010(UTC) Posts: 5,214 Location: Gold Coast, Australia Was thanked: 4301 time(s) in 1523 post(s)
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Yes, a batch command will still be processed the same way without PauseRender/ResumeRender.
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Rank: Advanced Member
Groups: Registered
Joined: 9/27/2014(UTC)
Posts: 113
Location: Germany
Thanks: 27 times
Was thanked: 8 time(s) in 8 post(s)
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Thanks Martin for the quick response.
I am just wondering how to proceed now, because its a scoreboard with two continues running gametimes (Clock and Shotclock). So there is not really a pause in the datafeed, just when there is a timeout or halftime.
Best
Marvin
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Rank: Administration
Groups: Administrators
Joined: 1/13/2010(UTC) Posts: 5,214 Location: Gold Coast, Australia Was thanked: 4301 time(s) in 1523 post(s)
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Check to make sure you are not updating fields unless they need to be changed,
then if updating more than one field at a time use the pauserender/resumerender.
Also be sure not to update titles more than 5 times a second (every 200ms) if possible when using older XAML titles.
For newer GT titles, they can be updated much more often without impacting performance.
Regards,
Martin
vMix
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2 users thanked admin for this useful post.
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