2 camcorders connected; one goes black

BillVideo

New Member
I have 2 camcorders: Camera #1 outputs HDMI. I connect this to my Windows laptop with an Elgato HD60 S capture device to convert its HDMI signal to USB. Camera #2 outputs SDI. I use a Magewell "USB Capture SDI"device to convert the SDI signal to USB.

When either of the camcorders is connected to the laptop by itself, it appears normally in OBS Studio. However, the instant that I insert the USB plug from the other camcorder, the first camcorder goes to black (or perhaps OBS no longer sees that camera's input).

Any suggestions on how to get both camcorders working in OBS Studio so that I can transition between them?

Running OBS Studio 25.0.8 64-bit.

Thanks!
Code:
18:36:30.552: CoInitializeEx succeeded: 0x00000001
18:36:30.553: CPU Name: Intel(R) Core(TM) i7-4500U CPU @ 1.80GHz
18:36:30.553: CPU Speed: 2394MHz
18:36:30.553: Physical Cores: 2, Logical Cores: 4
18:36:30.553: Physical Memory: 8097MB Total, 4604MB Free
18:36:30.553: Windows Version: 10.0 Build 18363 (release: 1909; revision: 836; 64-bit)
18:36:30.553: Running as administrator: false
18:36:30.553: Aero is Enabled (Aero is always on for windows 8 and above)
18:36:30.553: Windows 10 Gaming Features:
18:36:30.553:     Game DVR: On
18:36:30.555: Sec. Software Status:
18:36:30.556:     Windows Defender Antivirus: enabled (AV)
18:36:30.556:     Windows Firewall: enabled (FW)
18:36:30.557: Current Date/Time: 2020-07-16, 18:36:30
18:36:30.557: Browser Hardware Acceleration: true
18:36:30.557: Portable mode: false
18:36:31.045: OBS 25.0.8 (64-bit, windows)
18:36:31.045: ---------------------------------
18:36:31.069: ---------------------------------
18:36:31.069: audio settings reset:
18:36:31.069:     samples per sec: 44100
18:36:31.069:     speakers:        2
18:36:31.070: ---------------------------------
18:36:31.070: Initializing D3D11...
18:36:31.070: Available Video Adapters:
18:36:31.072:     Adapter 0: Intel(R) HD Graphics Family
18:36:31.072:       Dedicated VRAM: 117964800
18:36:31.072:       Shared VRAM:    2147483648
18:36:31.072:       PCI ID:         8086:a16
18:36:31.074:       Driver Version: 20.19.15.4531
18:36:31.075:       output 0: pos={0, 0}, size={1920, 1080}, attached=true, refresh=59, name=
18:36:31.077: Loading up D3D11 on adapter Intel(R) HD Graphics Family (0)
18:36:31.084: D3D11 loaded successfully, feature level used: b000
18:36:31.084: DXGI increase maximum frame latency success
18:36:31.667: ---------------------------------
18:36:31.667: video settings reset:
18:36:31.667:     base resolution:   1920x1080
18:36:31.667:     output resolution: 1280x720
18:36:31.667:     downscale filter:  Bicubic
18:36:31.667:     fps:               30/1
18:36:31.667:     format:            NV12
18:36:31.667:     YUV mode:          601/Partial
18:36:31.668: NV12 texture support not available
18:36:31.668: Audio monitoring device:
18:36:31.668:     name: Default
18:36:31.668:     id: default
18:36:31.669: ---------------------------------
18:36:31.672: [CoreAudio encoder]: CoreAudio AAC encoder not installed on the system or couldn't be loaded
18:36:31.673: Failed to load 'en-US' text for module: 'decklink-ouput-ui.dll'
18:36:31.708: [AMF] Unable to load 'amfrt64.dll', error code 126.
18:36:31.711: [AMF] AMF Test failed due to one or more errors.
18:36:31.711: Failed to initialize module 'enc-amf.dll'
18:36:31.735: [obs-browser]: Version 2.8.6
18:36:31.756: Couldn't find VLC installation, VLC video source disabled
18:36:31.762: A DeckLink iterator could not be created.  The DeckLink drivers may not be installed
18:36:31.763: No blackmagic support
18:36:31.769: ---------------------------------
18:36:31.769:   Loaded Modules:
18:36:31.769:     win-wasapi.dll
18:36:31.769:     win-mf.dll
18:36:31.769:     win-dshow.dll
18:36:31.769:     win-decklink.dll
18:36:31.769:     win-capture.dll
18:36:31.769:     vlc-video.dll
18:36:31.769:     text-freetype2.dll
18:36:31.769:     rtmp-services.dll
18:36:31.769:     obs-x264.dll
18:36:31.769:     obs-vst.dll
18:36:31.769:     obs-transitions.dll
18:36:31.769:     obs-text.dll
18:36:31.769:     obs-qsv11.dll
18:36:31.769:     obs-outputs.dll
18:36:31.769:     obs-filters.dll
18:36:31.769:     obs-ffmpeg.dll
18:36:31.769:     obs-browser.dll
18:36:31.769:     image-source.dll
18:36:31.769:     frontend-tools.dll
18:36:31.769:     enc-amf.dll
18:36:31.769:     decklink-ouput-ui.dll
18:36:31.769:     coreaudio-encoder.dll
18:36:31.769: ---------------------------------
18:36:31.769: ==== Startup complete ===============================================
18:36:31.770: Service '' not found
18:36:31.774: All scene data cleared
18:36:31.774: ------------------------------------------------
18:36:31.819: WASAPI: Device 'Speakers (Elgato Sound Capture)' [48000 Hz] initialized
18:36:31.819: [Loaded global audio device]: 'Desktop Audio'
18:36:31.913: WASAPI: Device 'Microphone (Realtek High Definition Audio)' [48000 Hz] initialized
18:36:31.913: [Loaded global audio device]: 'Mic/Aux'
18:36:31.917: Switched to scene 'Brotherhood Camera'
18:36:31.917: ------------------------------------------------
18:36:31.917: Loaded scenes:
18:36:31.917: - scene 'Scene':
18:36:31.917: - scene 'Brotherhood Camera':
18:36:31.917:     - source: 'Bhood Canon HFM31' (dshow_input)
18:36:31.917: - scene 'Rabkin Camera':
18:36:31.917:     - source: 'Rabkin AG-CX10' (dshow_input)
18:36:31.917: ------------------------------------------------
18:36:32.116: Switched to Preview/Program mode
18:36:32.116: ------------------------------------------------
18:36:32.590: Rabkin AG-CX10: data.GetDevice failed
18:36:32.590: Rabkin AG-CX10: Video configuration failed
18:36:33.034: ---------------------------------
18:36:33.034: [DShow Device: 'Bhood Canon HFM31'] settings updated:
18:36:33.034:     video device: Game Capture HD60 S (Video) (#01)
18:36:33.034:     video path: \\?\usb#vid_0fd9&pid_0074#06171424f5#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\{6f814be9-9af6-43cf-9249-c0340100021f}
18:36:33.034:     resolution: 1920x1080
18:36:33.034:     flip: 0
18:36:33.034:     fps: 29.97 (interval: 333667)
18:36:33.034:     format: YV12
18:36:33.039:     using video device audio: no
18:36:33.039:     separate audio filter
18:36:33.039:     sample rate: 48000
18:36:33.039:     channels: 2
18:36:33.039:     audio type: Capture
18:36:33.576: adding 23 milliseconds of audio buffering, total audio buffering is now 23 milliseconds (source: Bhood Canon HFM31)
18:36:33.576:
18:37:00.026: User switched to scene 'Rabkin Camera'
18:38:08.430: ==== Shutting down ==================================================
18:38:08.447: Switched to scene '(null)'
18:38:09.676: WASAPI: Device 'Speakers (Elgato Sound Capture)' Terminated
18:38:09.683: WASAPI: Device 'Microphone (Realtek High Definition Audio)' Terminated
18:38:09.696: All scene data cleared
18:38:09.696: ------------------------------------------------
18:38:09.841: Freeing OBS context data
18:38:09.858: [Scripting] Total detached callbacks: 0
Code:
18:36:30.552: CoInitializeEx succeeded: 0x00000001
18:36:30.553: CPU Name: Intel(R) Core(TM) i7-4500U CPU @ 1.80GHz
18:36:30.553: CPU Speed: 2394MHz
18:36:30.553: Physical Cores: 2, Logical Cores: 4
18:36:30.553: Physical Memory: 8097MB Total, 4604MB Free
18:36:30.553: Windows Version: 10.0 Build 18363 (release: 1909; revision: 836; 64-bit)
18:36:30.553: Running as administrator: false
18:36:30.553: Aero is Enabled (Aero is always on for windows 8 and above)
18:36:30.553: Windows 10 Gaming Features:
18:36:30.553:     Game DVR: On
18:36:30.555: Sec. Software Status:
18:36:30.556:     Windows Defender Antivirus: enabled (AV)
18:36:30.556:     Windows Firewall: enabled (FW)
18:36:30.557: Current Date/Time: 2020-07-16, 18:36:30
18:36:30.557: Browser Hardware Acceleration: true
18:36:30.557: Portable mode: false
18:36:31.045: OBS 25.0.8 (64-bit, windows)
18:36:31.045: ---------------------------------
18:36:31.069: ---------------------------------
18:36:31.069: audio settings reset:
18:36:31.069:     samples per sec: 44100
18:36:31.069:     speakers:        2
18:36:31.070: ---------------------------------
18:36:31.070: Initializing D3D11...
18:36:31.070: Available Video Adapters:
18:36:31.072:     Adapter 0: Intel(R) HD Graphics Family
18:36:31.072:       Dedicated VRAM: 117964800
18:36:31.072:       Shared VRAM:    2147483648
18:36:31.072:       PCI ID:         8086:a16
18:36:31.074:       Driver Version: 20.19.15.4531
18:36:31.075:       output 0: pos={0, 0}, size={1920, 1080}, attached=true, refresh=59, name=
18:36:31.077: Loading up D3D11 on adapter Intel(R) HD Graphics Family (0)
18:36:31.084: D3D11 loaded successfully, feature level used: b000
18:36:31.084: DXGI increase maximum frame latency success
18:36:31.667: ---------------------------------
18:36:31.667: video settings reset:
18:36:31.667:     base resolution:   1920x1080
18:36:31.667:     output resolution: 1280x720
18:36:31.667:     downscale filter:  Bicubic
18:36:31.667:     fps:               30/1
18:36:31.667:     format:            NV12
18:36:31.667:     YUV mode:          601/Partial
18:36:31.668: NV12 texture support not available
18:36:31.668: Audio monitoring device:
18:36:31.668:     name: Default
18:36:31.668:     id: default
18:36:31.669: ---------------------------------
18:36:31.672: [CoreAudio encoder]: CoreAudio AAC encoder not installed on the system or couldn't be loaded
18:36:31.673: Failed to load 'en-US' text for module: 'decklink-ouput-ui.dll'
18:36:31.708: [AMF] Unable to load 'amfrt64.dll', error code 126.
18:36:31.711: [AMF] AMF Test failed due to one or more errors.
18:36:31.711: Failed to initialize module 'enc-amf.dll'
18:36:31.735: [obs-browser]: Version 2.8.6
18:36:31.756: Couldn't find VLC installation, VLC video source disabled
18:36:31.762: A DeckLink iterator could not be created.  The DeckLink drivers may not be installed
18:36:31.763: No blackmagic support
18:36:31.769: ---------------------------------
18:36:31.769:   Loaded Modules:
18:36:31.769:     win-wasapi.dll
18:36:31.769:     win-mf.dll
18:36:31.769:     win-dshow.dll
18:36:31.769:     win-decklink.dll
18:36:31.769:     win-capture.dll
18:36:31.769:     vlc-video.dll
18:36:31.769:     text-freetype2.dll
18:36:31.769:     rtmp-services.dll
18:36:31.769:     obs-x264.dll
18:36:31.769:     obs-vst.dll
18:36:31.769:     obs-transitions.dll
18:36:31.769:     obs-text.dll
18:36:31.769:     obs-qsv11.dll
18:36:31.769:     obs-outputs.dll
18:36:31.769:     obs-filters.dll
18:36:31.769:     obs-ffmpeg.dll
18:36:31.769:     obs-browser.dll
18:36:31.769:     image-source.dll
18:36:31.769:     frontend-tools.dll
18:36:31.769:     enc-amf.dll
18:36:31.769:     decklink-ouput-ui.dll
18:36:31.769:     coreaudio-encoder.dll
18:36:31.769: ---------------------------------
18:36:31.769: ==== Startup complete ===============================================
18:36:31.770: Service '' not found
18:36:31.774: All scene data cleared
18:36:31.774: ------------------------------------------------
18:36:31.819: WASAPI: Device 'Speakers (Elgato Sound Capture)' [48000 Hz] initialized
18:36:31.819: [Loaded global audio device]: 'Desktop Audio'
18:36:31.913: WASAPI: Device 'Microphone (Realtek High Definition Audio)' [48000 Hz] initialized
18:36:31.913: [Loaded global audio device]: 'Mic/Aux'
18:36:31.917: Switched to scene 'Brotherhood Camera'
18:36:31.917: ------------------------------------------------
18:36:31.917: Loaded scenes:
18:36:31.917: - scene 'Scene':
18:36:31.917: - scene 'Brotherhood Camera':
18:36:31.917:     - source: 'Bhood Canon HFM31' (dshow_input)
18:36:31.917: - scene 'Rabkin Camera':
18:36:31.917:     - source: 'Rabkin AG-CX10' (dshow_input)
18:36:31.917: ------------------------------------------------
18:36:32.116: Switched to Preview/Program mode
18:36:32.116: ------------------------------------------------
18:36:32.590: Rabkin AG-CX10: data.GetDevice failed
18:36:32.590: Rabkin AG-CX10: Video configuration failed
18:36:33.034: ---------------------------------
18:36:33.034: [DShow Device: 'Bhood Canon HFM31'] settings updated:
18:36:33.034:     video device: Game Capture HD60 S (Video) (#01)
18:36:33.034:     video path: \\?\usb#vid_0fd9&pid_0074#06171424f5#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\{6f814be9-9af6-43cf-9249-c0340100021f}
18:36:33.034:     resolution: 1920x1080
18:36:33.034:     flip: 0
18:36:33.034:     fps: 29.97 (interval: 333667)
18:36:33.034:     format: YV12
18:36:33.039:     using video device audio: no
18:36:33.039:     separate audio filter
18:36:33.039:     sample rate: 48000
18:36:33.039:     channels: 2
18:36:33.039:     audio type: Capture
18:36:33.576: adding 23 milliseconds of audio buffering, total audio buffering is now 23 milliseconds (source: Bhood Canon HFM31)
18:36:33.576:
18:37:00.026: User switched to scene 'Rabkin Camera'
18:38:08.430: ==== Shutting down ==================================================
18:38:08.447: Switched to scene '(null)'
18:38:09.676: WASAPI: Device 'Speakers (Elgato Sound Capture)' Terminated
18:38:09.683: WASAPI: Device 'Microphone (Realtek High Definition Audio)' Terminated
18:38:09.696: All scene data cleared
18:38:09.696: ------------------------------------------------
18:38:09.841: Freeing OBS context data
18:38:09.858: [Scripting] Total detached callbacks: 0
 
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