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Bug Report - Audio sync issue with Blackmagic capture ...
https://obsproject.com/forum/threads/audio-sync-issue-with-blackmagic-capture-cards.86106/#:~:text=The%20audio%20meters%20should%20move%20in%20the%20Blackmagic,in%20obs.%20This%20can%20be%20remedied%20easily%20though%3A
Bug Report - Audio sync issue with Blackmagic capture ...
https://obsproject.com/forum/threads/audio-sync-issue-with-blackmagic-capture-cards.86106/
Currently using a Blackmagic Decklink 4K Extreme and two Blackmagic Intensity Pro cards. Audio is via the DeckLink's balanced XLR inputs. When OBS is first run up, there is a noticeable audio delay (visible on the audio meters). Attempting to record any output at this stage results in a huge desynchronisation between video and audio.
Blackmagic Forum • View topic - Decklink Mini Monitor 4K ...
https://forum.blackmagicdesign.com/viewtopic.php?f=3&t=73903
However, decklink audio and video are also likely to be out of sync, though the offset is usually 2-3 frames, not a half-second. There's a UI preference which allows you to delay GUI video by a specified number of frames to match any external delay, but that won't solve the underlying issue (the other audio delay setting in Resolve is only ...
Audio Sync Issues with Black Magic Decklink Studio ...
https://creativecow.net/forums/thread/audio-sync-issues-with-black-magic-decklink-studio/
I’m not sure where the audio delay problem is coming from. But from experience I have never known a DeckLink card to introduce an audio delay itself. Chances are the delay is being introduced either before or after the card. The nature of the delay can give you at least an indication of where the delay is occurring.
Unity Audio delay · Issue #55 · RenderHeads/UnityPlugin ...
https://github.com/RenderHeads/UnityPlugin-AVProDeckLink/issues/55
I have tried on another computer with a Blackmagic DeckLink 8K Pro, w10, NVIDIA RTX A4000 and I have the same problem. It is an audio delay of a second or less but very annoying. I have made a new project in unity 2020.3.18f1, I have imported AVPro DeckLink, I have compiled the scene "01_InputDemo" and I have this delay.
Audio delayed with DeckLink
https://ffmpeg-user.ffmpeg.narkive.com/OJ1si2yH/audio-delayed-with-decklink
delayed audio is present also when using libx264 or outputting to FLV file. Also there is no such sync issues when capturing the same SDI input using Blackmagic Media Express. --------------------------------------------------- ffmpeg -f decklink -i "DeckLink Duo (3)@9" -vcodec nvenc -b:v 2M
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