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Can I Fix Blackmagic URSA Mini Pro Off Speed Recording Mis-match Audio?
Have an issue with some recordings on a Blackmagic URSA Mini Pro. Someone hit the Off Speed Recording menu button by mistake and now my audio and video are out of sync. These were performances on a stage that cannot be reshot. All I have is the file from the camera to work with. The Project Frame Rate was set at 29.97fps. The Off Speed Frame Rate was set at 30fps. I don’t edit much like I used to and the extent of my editing these days is usually trimming beginning and ends of video before I post them online. I stopped editing full time in 2016 but I have over 25 years of experience. I am using DaVinci Resolve Studio 18.6 and I also have Adobe Premiere Pro CC 2024 as well. I have tried some fixes – all unsuccessful – and I am unsure how to correct this or if this is even correctable at all. These are not short files, they are close to 2 hours! I know any solution will have to contend with drift somewhat but I could use any suggestions or help to see if I can get usable video/audio from this. Please help!
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2 Replies
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Was the audio recorded on a separate recorder? It’s my understanding that the UMP doesn’t record audio when off speed recording is selected. Either way, I suggest you separate the audio and video tracks. Leave the audio alone and slow the video 0.1%. Look for a visual movement that would make a sharp noise and use that as a sync point. Line up the audio & video clips to the sync point. Then see how long the tracks stay synced. You may have to periodically cut the video and change its speed if the sync drifts. You say there’s two hours of footage. Hopefully, there are scene changes, or moments when the lights go to black where you can re-sync.
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The Ursa records audio at the base frame rate so it will be drifting -.1%. Delink the audio and speed the audio up .1% and it should be back in sync. If it won’t just affect the audio speed on the edit page, it should do it on the Fairlight page. But unlink the audio from the video clip. Worse case you might have to bounce the audio to another track and then speed up the bounce. Do this to the whole clip before editing
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