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AJA Corvid 88 inputting diffrent resolutions and frame rates
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Joined: 6/29/2011(UTC) Posts: 311   Location: Florida Thanks: 6 times
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Has anyone had any experience with the AJA Corvid 88 and inputting different frame rates and or resolutions? i.e. SDI cameras @ 1080i 59.94 and computer screens @ 720p 30 SDI
My master output setting is 1080i 59.94 for broadcast on local cable channel and has to stay that way. When trying to add the computer screens @ 720p 30 I get an error about the hardware unable to use non matching frame rate. I can of course use NDI but the quality is much lower and dropped frames is off the chart and not acceptable. In the pas t I've been able to mix resolution and frame rates no problem. Is this a limitation of the AJA Corvid 88 ?
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Rank: Administration
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Joined: 1/13/2010(UTC) Posts: 5,208 Location: Gold Coast, Australia Was thanked: 4289 time(s) in 1520 post(s)
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Yes, this is a limitation of the card as noted on the specs page: https://www.aja.com/products/developer/corvid-88* Channels must use the same master clock. Eg, 29.97 and 59.94 It is enforced in vMix since 21 due to random behaviour previously when mixing fractional and non-fractional frame rates such as jumpy picture and broken audio. You should be able to set the computer screen to 720 59hz which will match with 29.97 and 59.94 signals just fine. Regards, Martin vMix
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AJA Corvid 88 inputting diffrent resolutions and frame rates
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