Hello. I recently installed OBS 24 and started to use it. I'm a doctor using it to record what happens in a room for Medical Simulation. In that room I have a microphone and 3 different cameras. The problem is no matter the delay I put the audio comes out around 2,5 seg before the video. Is like it didn't listen to me. Could you help me, please
Question / Help Impossible to sync audio and video
- Thread starter janm
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- audio bugs sync
carlmmii
Active Member
2.5 seconds is quite a bit... have you adjusted your audio delay to 2500ms in the advanced settings?
Also, could you post a log file of a recent recording attempt? That may shed some light on things.
Also, could you post a log file of a recent recording attempt? That may shed some light on things.
Thank you for the answer!!
It is quite rare because even if you change the delay, nothing is modified.
As I said before, we use the OBS to capture video and audio from one room and then transmit it to another room (we don't use internet). That second screen (room) is where we broadcast live what happens in the first (from a control room). The peculiarity is that the transmission is done by network cable / HDMI (30 meters). No matter how much we change the delay it's as if it didn't pay any attention to us. Could it be the cable length?
It is quite rare because even if you change the delay, nothing is modified.
As I said before, we use the OBS to capture video and audio from one room and then transmit it to another room (we don't use internet). That second screen (room) is where we broadcast live what happens in the first (from a control room). The peculiarity is that the transmission is done by network cable / HDMI (30 meters). No matter how much we change the delay it's as if it didn't pay any attention to us. Could it be the cable length?
Narcogen
Active Member
What method are you using to send to the other room?
The stream delay and audio offsets are intended to apply to output (recorded file or RTMP stream). It won't affect anything else, so if you aren't using those methods to output from OBS, those settings will not have any effect.
The stream delay and audio offsets are intended to apply to output (recorded file or RTMP stream). It won't affect anything else, so if you aren't using those methods to output from OBS, those settings will not have any effect.
Narcogen
Active Member
No, not really.
OBS considers output to be RTMP and FFMpeg recording. Projectors and other outputs are monitoring-- OBS isn't even trying to keep the output of a Program or Preview projector and audio monitor in sync at all.
Depending on what you're connecting that HDMI cable to, to get synchronized output from OBS into another device that is physically nearby would be the OBS-NDI plugin and a local network. But I don't know what you're plugging your HDMI cable into in the other room.
https://obsproject.com/forum/resources/obs-ndi-newtek-ndi™-integration-into-obs-studio.528/
OBS considers output to be RTMP and FFMpeg recording. Projectors and other outputs are monitoring-- OBS isn't even trying to keep the output of a Program or Preview projector and audio monitor in sync at all.
Depending on what you're connecting that HDMI cable to, to get synchronized output from OBS into another device that is physically nearby would be the OBS-NDI plugin and a local network. But I don't know what you're plugging your HDMI cable into in the other room.
https://obsproject.com/forum/resources/obs-ndi-newtek-ndi™-integration-into-obs-studio.528/
Narcogen
Active Member
NDI isn't going to work in that scenario, then. You need a client device capable of running an NDI runtime, and I'm not sure there is one for Android.
You may want to look at this, then, which will let you keep sync but will introduce latency:
How to set up your own private RTMP server using nginx | OBS Forumshttps://obsproject.com › Resources › Guides (General)
You may want to look at this, then, which will let you keep sync but will introduce latency:
How to set up your own private RTMP server using nginx | OBS Forumshttps://obsproject.com › Resources › Guides (General)