dropped Frames with Blackmagic Decklink UltraStudio 4k Mini

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frankfunk
Met Resolume in a bar the other day
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Joined: Mon Dec 30, 2019 21:38

dropped Frames with Blackmagic Decklink UltraStudio 4k Mini

Post by frankfunk »

I can't get smooth output on my UltraStudio. Both the SDI and HDMI outputs drop around 60% of frames.

Recording shows repeated frames, mostly 2, sometimes 3 in a row:

1 1 3 3 5 5 5 8 8 9 9 etc.

Tested several machines: Mac Mini M1, MacBook Pro M1, Mac Studio M1.

Output with other software (Mitti) via UltraStudio is smooth!
Output via HDMI Out from Resolume is smooth!
Only Resolume & UltraStudio won't play nicely together.

I've tested both generative Footage (45° Lines are great to identify stuttery playback) as well as QT ProRes and DXV footage in different framerates (25/50/60).

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cosmowe
Knows Resolume better than the devs
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Location: cologne // germany

Re: dropped Frames with Blackmagic Decklink UltraStudio 4k Mini

Post by cosmowe »

I can confirm that. Same here on Pc.

Setting the composition to Auto instead of 50 or 60 Hz lowers the drops.....but not completely.


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cosmowe
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frankfunk
Met Resolume in a bar the other day
Posts: 10
Joined: Mon Dec 30, 2019 21:38

Re: dropped Frames with Blackmagic Decklink UltraStudio 4k Mini

Post by frankfunk »

Thanks for the confirmation. This really sucks, and there's no solution? Is there other similar hardware that can give me SDI Key & Fill output with frame-sync and without dropped frames?

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cosmowe
Knows Resolume better than the devs
Posts: 1514
Joined: Fri Mar 25, 2011 10:27
Location: cologne // germany

Re: dropped Frames with Blackmagic Decklink UltraStudio 4k Mini

Post by cosmowe »

Setting the composition to Auto instead of 50 or 60 Hz lowers the drops.....but not completely.
Can you also confirm that?


....I would guess that a BM Decklink I/O Card would do the trick.......
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Bassindaniel
Hasn't felt like this about software in a long time
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Re: dropped Frames with Blackmagic Decklink UltraStudio 4k Mini

Post by Bassindaniel »

Add an 1ms delay on your screen output in advanced window.

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