Victor Dmitriev
New Member
I use the latest version of OBS Studio (25.0.4 64 bit), the big desktop with Windows 7 (64 bit), Intel i7 (6 cores, 16 GB of RAM).
The signal sources are various (in this example the Sony FDR-AX33E handycam, I also use various Canon DSLRs).
Two monitors 1440p and 1080p, both 60 fps (the first is only 60 fps, the second can be 50 or 60 fps).
Capture sources - Full HD, 25 fps from handycam and DSLRs.
eEver USB capture card (HDMI-USB3.0, 1080p up to 60 fps).
There are several capture cards - from 1 to 5.
Each of my capture cards with any of my signal sources works perfectly with a single connection, everything is fine.
With the simultaneous inclusion of 2 or more capture cards, one of two situations occurs randomly.
Situation 1 (probability of over 50%).
Everything is fine, there is a capture, good switching between scenes, recording in the required quality. Within 2-3 hours - everything is fine.
Situation 2 (probability below 50%).
On most scenes - a partial breakdown of the synchronization of lines at the bottom of the frame (see video example). For several hours such a picture. On the monitors of sources themselves, everything is fine, no disruptions.
Rebooting OBS Studio and the computer does not affect the selection of situations 1 or 2.
Connecting and disconnecting capture cards is not affected (over one).
Turning the second monitor on and off is not affected.
Switching between 25 fps or 50 fps on the sources is not affected.
Feeding 5V autonomous power cards or powered by a USB connector is not affected.
Swapping cards between each other does not affect.
The temperature mode of the cards, the moment of turning on or warming up for 3-4 hours - does not affect.
It seems to depend on the weather outside the window.
But, at any time, disabling all cards except one eliminates the failure of line synchronization. Inclusion of 2 or more - Situation 1 or 2.
What can be done to solve this trouble and eliminate a partial breakdown of the synchronization of lines at the bottom of the frame?
Log file and video sample attached.
The signal sources are various (in this example the Sony FDR-AX33E handycam, I also use various Canon DSLRs).
Two monitors 1440p and 1080p, both 60 fps (the first is only 60 fps, the second can be 50 or 60 fps).
Capture sources - Full HD, 25 fps from handycam and DSLRs.
eEver USB capture card (HDMI-USB3.0, 1080p up to 60 fps).
There are several capture cards - from 1 to 5.
Each of my capture cards with any of my signal sources works perfectly with a single connection, everything is fine.
With the simultaneous inclusion of 2 or more capture cards, one of two situations occurs randomly.
Situation 1 (probability of over 50%).
Everything is fine, there is a capture, good switching between scenes, recording in the required quality. Within 2-3 hours - everything is fine.
Situation 2 (probability below 50%).
On most scenes - a partial breakdown of the synchronization of lines at the bottom of the frame (see video example). For several hours such a picture. On the monitors of sources themselves, everything is fine, no disruptions.
Rebooting OBS Studio and the computer does not affect the selection of situations 1 or 2.
Connecting and disconnecting capture cards is not affected (over one).
Turning the second monitor on and off is not affected.
Switching between 25 fps or 50 fps on the sources is not affected.
Feeding 5V autonomous power cards or powered by a USB connector is not affected.
Swapping cards between each other does not affect.
The temperature mode of the cards, the moment of turning on or warming up for 3-4 hours - does not affect.
It seems to depend on the weather outside the window.
But, at any time, disabling all cards except one eliminates the failure of line synchronization. Inclusion of 2 or more - Situation 1 or 2.
What can be done to solve this trouble and eliminate a partial breakdown of the synchronization of lines at the bottom of the frame?
Log file and video sample attached.