Question / Help Set Webcam delay won't hold

[madlarkin6]

I've set a 1500ms - 2400ms delay on my webcam/audio to sync with my capture card (usually has a 1500ms delay) the audio works fine but the webcam doesn't want to hold the delay, after about 3-5 seconds the webcam starts recording live and I need to refresh the webcam source for it to work again, and then it jumps back to live.

I have a Logitech C920 Pro

11:49:10: Open Broadcaster Software v0.632b - 32bit (´・ω・｀)
11:49:10: -------------------------------
11:49:10: CPU Name: Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz
11:49:10: CPU Speed: 3411MHz
11:49:10: Physical Memory: 4095MB Total, 4095MB Free
11:49:10: stepping id: 7, model 42, family 6, type 0, extmodel 1, extfamily 0, HTT 1, logical cores 8, total cores 4
11:49:10: monitor 1: pos={1920, 0}, size={1920, 1080}
11:49:10: monitor 2: pos={0, 0}, size={1920, 1080}
11:49:10: Windows Version: 6.1 Build 7601 S
11:49:10: Aero is Enabled
11:49:10: -------------------------------
11:49:10: OBS Modules:
11:49:10: Base Address Module
11:49:10: 00E90000 OBS.exe
11:49:10: 5D960000 OBSApi.dll
11:49:10: 5D780000 DShowPlugin.dll
11:49:10: 5D750000 GraphicsCapture.dll
11:49:10: 5D720000 NoiseGate.dll
11:49:10: 5E3A0000 PSVPlugin.dll
11:49:10: ------------------------------------------
11:49:10: Adapter 1
11:49:10: Video Adapter: NVIDIA GeForce GTX 560
11:49:10: Video Adapter Dedicated Video Memory: 2095513600
11:49:10: Video Adapter Shared System Memory: 2147364864
11:49:10: Video Adapter Output 1: pos={0, 0}, size={1920, 1080}, attached=true
11:49:10: Video Adapter Output 2: pos={1920, 0}, size={1920, 1080}, attached=true
11:49:10: ------------------------------------------
11:49:10: Adapter 2
11:49:10: Video Adapter: Intel(R) HD Graphics Family
11:49:10: Video Adapter Dedicated Video Memory: 67108864
11:49:10: Video Adapter Shared System Memory: 1711276032
11:49:10: =====Stream Start: 2014-09-13, 11:49:10===============================================
11:49:10: Multithreaded optimizations: On
11:49:10: Base resolution: 1920x1080
11:49:10: Output resolution: 1280x720
11:49:10: ------------------------------------------
11:49:10: Loading up D3D10 on NVIDIA GeForce GTX 560 (Adapter 1)...
11:49:10: ------------------------------------------
11:49:10: Audio Format: 48000 Hz
11:49:10: ------------------------------------------
11:49:10: Audio Channels: 2 Ch
11:49:10: Playback device Default
11:49:10: ------------------------------------------
11:49:10: Using desktop audio input: Speakers (ASUS Xonar DG Audio Device)
11:49:10: Global Audio time adjust: 0
11:49:10: ------------------------------------------
11:49:10: Audio Encoding: AAC
11:49:10: bitrate: 128
11:49:10: Using Window Capture
11:49:10: Using bitmap image
11:49:10: Using bitmap image
11:49:10: ------------------------------------------
11:49:10: device: HD Pro Webcam C920,
11:49:10: device id \\?\usb#vid_046d&pid_082d&mi_00#7&37aaf9ea&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global,
11:49:10: chosen type: MJPG, usingFourCC: false, res: 800x600 - 800x600, frameIntervals: 333333-2000000
11:49:10: use buffering: true - 15000000, fourCC: 'MJPG'
11:49:10: audio device: Disable,
11:49:10: audio device id Disabled,
11:49:10: audio time offset 0,
11:49:10:
11:49:10: Using directshow input
11:49:10: Using graphics capture
11:49:10: Using bitmap image
11:49:10: Scene buffering time set to 700
11:49:10: ------------------------------------------
11:49:10: Video Encoding: x264
11:49:10: fps: 30
11:49:10: width: 1280, height: 720
11:49:10: preset: veryfast
11:49:10: profile: main
11:49:10: keyint: 60
11:49:10: CBR: yes
11:49:10: CFR: yes
11:49:10: max bitrate: 2000
11:49:10: buffer size: 2000
11:49:10: ------------------------------------------
11:49:44: ------------------------------------------
11:49:44: device: HD Pro Webcam C920,
11:49:44: device id \\?\usb#vid_046d&pid_082d&mi_00#7&37aaf9ea&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global,
11:49:44: chosen type: MJPG, usingFourCC: false, res: 800x600 - 800x600, frameIntervals: 333333-2000000
11:49:44: use buffering: true - 15000000, fourCC: 'MJPG'
11:49:44: audio device: Disable,
11:49:44: audio device id Disabled,
11:49:44: audio time offset 0,
11:49:44:
11:49:44: Using directshow input
11:50:01: ------------------------------------------
11:50:01: device: HD Pro Webcam C920,
11:50:01: device id \\?\usb#vid_046d&pid_082d&mi_00#7&37aaf9ea&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global,
11:50:01: chosen type: MJPG, usingFourCC: false, res: 800x600 - 800x600, frameIntervals: 333333-2000000
11:50:01: use buffering: true - 15000000, fourCC: 'MJPG'
11:50:01: audio device: Disable,
11:50:01: audio device id Disabled,
11:50:01: audio time offset 0,
11:50:01:
11:50:01: Using directshow input
11:50:35: ------------------------------------------
11:50:35: device: HD Pro Webcam C920,
11:50:35: device id \\?\usb#vid_046d&pid_082d&mi_00#7&37aaf9ea&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global,
11:50:35: chosen type: MJPG, usingFourCC: false, res: 800x600 - 800x600, frameIntervals: 333333-2000000
11:50:35: use buffering: true - 15000000, fourCC: 'MJPG'
11:50:35: audio device: Disable,
11:50:35: audio device id Disabled,
11:50:35: audio time offset 0,
11:50:35:
11:50:35: Using directshow input

 

[Lain]

This is somewhat of a semi-known issue, but usually only happens with integrated webcams. I think I have a theory of why it's happening. Could you try plugging it in to a different port? Or rather, if it's in a USB 2.0 port, try a 3.0 port, or vise-versa and see if it makes any difference.

 

[madlarkin6]

Tried it again today without changing the port and the webcam held it's delay during a preview for several minutes and didn't show any signs of catching up. If it happens again I'll try changing the port, just seems odd that it happens some days and other it doesn't happen at all. Might be unrelated but it did start happening again right after the newest OBS update.

EDIT just tried streaming and it didn't hold

 

[madlarkin6]

It seems to work whenever I do a preview stream, but whenever I actually stream the webcam doesn't hold a delay.