Bug Report Webcam won't work

[1st Casualty]

Hey guys, so I've recently downloaded OBS, and my video capture device won't work. It works perfectly well when I test it on Skype, etc. But it will not work when I preview it on OBS. I've tried closing Skype completely because of suggestions in other forums saying that it might be a problem with a different program using it, but no luck. I'm using Logitech C920, any help would be greatly appreciated.

Logs:
16:34:31: Open Broadcaster Software v0.656b - 32bit (´・ω・｀)
16:34:31: -------------------------------
16:34:31: CPU Name: Intel(R) Core(TM) i5-4430 CPU @ 3.00GHz
16:34:31: CPU Speed: 2993MHz
16:34:31: Physical Memory: 4095MB Total, 4095MB Free
16:34:31: stepping id: 3, model 60, family 6, type 0, extmodel 1, extfamily 0, HTT 1, logical cores 4, total cores 4
16:34:31: monitor 1: pos={0, 0}, size={1920, 1080}
16:34:31: Windows Version: 6.3 Build 9600 (revision 17415)
16:34:31: Aero is Enabled
16:34:31: -------------------------------
16:34:31: OBS Modules:
16:34:31: Base Address Module
16:34:31: 009B0000 OBS.exe
16:34:31: 721B0000 OBSApi.dll
16:34:31: 71DD0000 DShowPlugin.dll
16:34:31: 71DA0000 GraphicsCapture.dll
16:34:31: 71D70000 NoiseGate.dll
16:34:31: 71D50000 PSVPlugin.dll
16:34:31: 71D30000 scenesw.dll
16:34:31: ------------------------------------------
16:34:31: Adapter 1
16:34:31: Video Adapter: Intel(R) HD Graphics 4600
16:34:31: Video Adapter Dedicated Video Memory: 0
16:34:31: Video Adapter Shared System Memory: 1879048192
16:34:31: Video Adapter Output 1: pos={0, 0}, size={1920, 1080}, attached=true
16:34:31: =====Stream Start: 2015-10-26, 16:34:31===============================================
16:34:31: Multithreaded optimizations: On
16:34:31: Base resolution: 1920x1080
16:34:31: Output resolution: 1920x1080
16:34:31: ------------------------------------------
16:34:31: Loading up D3D10 on Intel(R) HD Graphics 4600 (Adapter 1)...
16:34:31: ------------------------------------------
16:34:31: Audio Format: 48000 Hz
16:34:31: ------------------------------------------
16:34:31: Audio Channels: 2 Ch
16:34:31: Playback device Default
16:34:31: ------------------------------------------
16:34:31: Using desktop audio input: Headphones (AT2020USB+)
16:34:31: Global Audio time adjust: 0
16:34:31: ------------------------------------------
16:34:31: Using auxilary audio input: Microphone (AT2020USB+)
16:34:31: Mic time offset: 0
16:34:31: ------------------------------------------
16:34:31: Audio Encoding: AAC
16:34:31: bitrate: 320
16:34:31: ------------------------------------------
16:34:31: device: Logitech HD Pro Webcam C920,
16:34:31: device id \\?\usb#vid_046d&pid_082d&mi_00#6&4f11d77&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\{bbefb6c7-2fc4-4139-bb8b-a58bba724083},
16:34:31: chosen type: I420, usingFourCC: false, res: 1920x1080 - 1920x1080, frameIntervals: 333333-2000000
16:34:31: use buffering: false - 0, fourCC: 'I420'
16:34:31: audio device: Microphone (AT2020USB+),
16:34:31: audio device id (null),
16:34:31: audio time offset 0,
16:34:31:
16:34:31: device audio info - bits per sample: 16, channels: 2, samples per sec: 44100, block size: 4
16:34:31: Using directshow input
Warning -- DShowPlugin: control->Run failed, result = 80004002
16:34:31: Scene buffering time set to 700
16:34:31: ------------------------------------------
16:34:31: Video Encoding: x264
16:34:31: fps: 30
16:34:31: width: 1920, height: 1080
16:34:31: preset: veryfast
16:34:31: profile: high
16:34:31: keyint: 250
16:34:31: CBR: yes
16:34:31: CFR: yes
16:34:31: max bitrate: 10000
16:34:31: buffer size: 10000
16:34:31: ------------------------------------------
16:35:41: FlushBufferedVideo: Flushing 2 packets over 33 ms
16:35:41: Total frames encoded: 2065, total frames duplicated: 0 (0.00%)
16:35:41: Total frames rendered: 2088, number of late frames: 0 (0.00%) (it's okay for some frames to be late)

 

[Sapiens]

Install/reinstall the latest driver package from http://support.logitech.com/product/hd-pro-webcam-c920#download then delete and re-add your webcam source. You also shouldn't assign your AT2020USB+ mic to the webcam.

 

[1st Casualty]

Gah, no luck.

Even with the logitech program itself, the screen is black.

But it still works when I use the test feature on Skype!
I have also deleted and re-added my webcam source, and disabled the mic feature in OBS and no luck. :(

 

[Sapiens]

If it isn't working in Logitech's own software then you don't need to be troubleshooting OBS. Try a different USB port, install the latest chipset drivers from Intel, and if all else fails see what Logitech Support has to say.

 

[Andrewdomas]

i have the exact same problem. no new drivers to update too, obs is fully updated, havnt changed anything to mess with this but for some reason im getting the same thing.

 

[Andrewdomas]

i figured out the problem with the webcam not working, right click the cource of your camera aka video capture device, go into properties, then configure, then camera control, then tick the exposure button and your webcam should work again :) enjoy my friend!