Bug Report Audio Snaps and Pops

smacky · Jan 31, 2013

My audio snaps and pops when I add a video capture device to my broadcast. Any fixes?

Lain · Jan 31, 2013

I have heard of this before, but I am not entirely sure why this would occur. Could I see a log file possibly?

smacky · Jan 31, 2013

Here you go.

Code:

Open Broadcaster Software v0.466a - 32bit (´・ω・｀)
-------------------------------
CPU Name: Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz
CPU Speed: 3310MHz
Physical Memory:  4095MB Total, 4095MB Free
stepping id: 7, model 10, family 6, type 0, extmodel 1, extfamily 0, HTT 1, logical cores 4, total cores 4
Windows Version: 6.1 Build 7601 S
Aero is Disabled
------------------------------------------
Adapter 1
  Video Adapter: AMD Radeon HD 6900 Series
  Video Adapter Dedicated Video Memory: 2125156352
  Video Adapter Shared System Memory: 4014465024
=====Stream Start=====================================================================
  Multithreaded optimizations: On
  Base resolution: 1920x1080
  Output resolution: 1920x1080
------------------------------------------
Loading up D3D10...
Using 7.1 surround speaker setup (experimental)
------------------------------------------
Using auxilary audio input: Microphone (2- Logitech G35 Headset)
------------------------------------------
Audio Encoding: MP3
    bitrate: 128
Using Monitor Capture
------------------------------------------
    device: Logitech HD Pro Webcam C920,
    device id \\?\usb#vid_046d&pid_082d&mi_00#7&34a9f592&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\{bbefb6c7-2fc4-4139-bb8b-a58bba724083},
    chosen type: RGB24, usingFourCC: false, res: 1920x1080 - 1920x1080, fps: 5-30, fourCC: 00000000

Using directshow input
Using Monitor Capture
------------------------------------------
Video Encoding: x264
    fps: 30
    width: 1920, height: 1080
    preset: veryfast
    CBR: no
    max bitrate: 1500
    buffer size: 1500
    quality: 8
------------------------------------------
Using RTMP service: Twitch / Justin.tv
  Server selection: rtmp://live-ord.justin.tv/app
bufferTime: 1459, outputRateWindowTime: 1000, dropThreshold: 1959
Warning -- Capture BitBlt failed..  just so you know
++++++++++++++++++++++++++++++++++++++++++++++++++++++
  New Scene
Using Monitor Capture
------------------------------------------
    device: Logitech HD Pro Webcam C920,
    device id \\?\usb#vid_046d&pid_082d&mi_00#7&34a9f592&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\{bbefb6c7-2fc4-4139-bb8b-a58bba724083},
    chosen type: RGB24, usingFourCC: false, res: 1920x1080 - 1920x1080, fps: 5-30, fourCC: 00000000

Using directshow input
Total frames rendered: 322955, number of frames that lagged: 61049 (18.90%) (it's okay for some frames to lag)
RTMPPublisher::SocketLoop: Aborting due to bStopping
Number of b-frames dropped: 0 (0%), Number of p-frames dropped: 0 (0%), Total 0 (0%)
=====Stream End=======================================================================
=====Stream Start=====================================================================
  Multithreaded optimizations: On
  Base resolution: 1920x1080
  Output resolution: 1920x1080
------------------------------------------
Loading up D3D10...
Using 7.1 surround speaker setup (experimental)
------------------------------------------
Using auxilary audio input: Microphone (2- Logitech G35 Headset)
------------------------------------------
Audio Encoding: MP3
    bitrate: 128
Using Monitor Capture
------------------------------------------
    device: Logitech HD Pro Webcam C920,
    device id \\?\usb#vid_046d&pid_082d&mi_00#7&34a9f592&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\{bbefb6c7-2fc4-4139-bb8b-a58bba724083},
    chosen type: RGB24, usingFourCC: false, res: 1920x1080 - 1920x1080, fps: 5-30, fourCC: 00000000

Using directshow input
------------------------------------------
Video Encoding: x264
    fps: 30
    width: 1920, height: 1080
    preset: veryfast
    CBR: no
    max bitrate: 1500
    buffer size: 1500
    quality: 8
------------------------------------------
Using RTMP service: Twitch / Justin.tv
  Server selection: rtmp://live-ord.justin.tv/app
bufferTime: 1582, outputRateWindowTime: 1000, dropThreshold: 2082
Total frames rendered: 4119, number of frames that lagged: 0 (0.00%) (it's okay for some frames to lag)
RTMPPublisher::SocketLoop: Aborting due to bStopping
Number of b-frames dropped: 0 (0%), Number of p-frames dropped: 0 (0%), Total 0 (0%)
=====Stream End=======================================================================
=====Stream Start=====================================================================
  Multithreaded optimizations: On
  Base resolution: 1920x1080
  Output resolution: 1920x1080
------------------------------------------
Loading up D3D10...
Using 7.1 surround speaker setup (experimental)
------------------------------------------
Using auxilary audio input: Microphone (2- Logitech G35 Headset)
------------------------------------------
Audio Encoding: MP3
    bitrate: 128
Using Monitor Capture
------------------------------------------
    device: Logitech HD Pro Webcam C920,
    device id \\?\usb#vid_046d&pid_082d&mi_00#7&34a9f592&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\{bbefb6c7-2fc4-4139-bb8b-a58bba724083},
    chosen type: RGB24, usingFourCC: false, res: 1920x1080 - 1920x1080, fps: 5-30, fourCC: 00000000

Using directshow input
------------------------------------------
Video Encoding: x264
    fps: 30
    width: 1920, height: 1080
    preset: veryfast
    CBR: no
    max bitrate: 1500
    buffer size: 1500
    quality: 8
------------------------------------------
Using RTMP service: Twitch / Justin.tv
  Server selection: rtmp://live-ord.justin.tv/app
bufferTime: 1560, outputRateWindowTime: 1000, dropThreshold: 2060
++++++++++++++++++++++++++++++++++++++++++++++++++++++
  New Scene
Using Monitor Capture
------------------------------------------
    device: Logitech HD Pro Webcam C920,
    device id \\?\usb#vid_046d&pid_082d&mi_00#7&34a9f592&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\{bbefb6c7-2fc4-4139-bb8b-a58bba724083},
    chosen type: RGB24, usingFourCC: false, res: 1920x1080 - 1920x1080, fps: 5-30, fourCC: 00000000

Using directshow input
Using Monitor Capture
RTMPPublisher::BufferedSend: Buffer is full (205563 / 207872 bytes), waiting to send 4104 bytes
RTMPPublisher::BufferedSend: Buffer is full (205563 / 207872 bytes), waiting to send 4104 bytes
RTMPPublisher::SocketLoop: Socket error, send() returned -1, GetLastError() 10053
Total frames rendered: 49256, number of frames that lagged: 1048 (2.13%) (it's okay for some frames to lag)
Number of b-frames dropped: 26 (0.023%), Number of p-frames dropped: 8 (0.0071%), Total 34 (0.03%)
=====Stream End=======================================================================
=====Stream Start=====================================================================
  Multithreaded optimizations: On
  Base resolution: 1920x1080
  Output resolution: 1920x1080
------------------------------------------
Loading up D3D10...
Using 7.1 surround speaker setup (experimental)
------------------------------------------
Using auxilary audio input: Microphone (2- Logitech G35 Headset)
------------------------------------------
Audio Encoding: MP3
    bitrate: 128
Using Monitor Capture
------------------------------------------
    device: Logitech HD Pro Webcam C920,
    device id \\?\usb#vid_046d&pid_082d&mi_00#7&34a9f592&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\{bbefb6c7-2fc4-4139-bb8b-a58bba724083},
    chosen type: RGB24, usingFourCC: false, res: 1920x1080 - 1920x1080, fps: 5-30, fourCC: 00000000

Using directshow input
Using Monitor Capture
------------------------------------------
Video Encoding: x264
    fps: 30
    width: 1920, height: 1080
    preset: veryfast
    CBR: no
    max bitrate: 1500
    buffer size: 1500
    quality: 8
------------------------------------------
Using RTMP service: Twitch / Justin.tv
  Server selection: rtmp://live-ord.justin.tv/app
bufferTime: 11957, outputRateWindowTime: 1000, dropThreshold: 12457
Total frames rendered: 215614, number of frames that lagged: 3538 (1.64%) (it's okay for some frames to lag)
RTMPPublisher::SocketLoop: Aborting due to bStopping
Number of b-frames dropped: 0 (0%), Number of p-frames dropped: 0 (0%), Total 0 (0%)
=====Stream End=======================================================================

Profiler results:

==============================================================
frame - [100%] [avg time: 22.596 ms] [avg calls per frame: 1] [children: 92.7%] [unaccounted: 7.26%]
| scene->Preprocess - [60.9%] [avg time: 13.76 ms] [avg calls per frame: 1]
| video encoding and uploading - [31.8%] [avg time: 7.196 ms] [avg calls per frame: 1] [children: 14.2%] [unaccounted: 17.7%]
| | CopyResource - [0.288%] [avg time: 0.065 ms] [avg calls per frame: 0]
| | conversion to 4:2:0 - [0.0752%] [avg time: 0.017 ms] [avg calls per frame: 0]
| | call to encoder - [13.7%] [avg time: 3.097 ms] [avg calls per frame: 0]
| | sending stuff out - [0.111%] [avg time: 0.025 ms] [avg calls per frame: 0]
==============================================================

Lain · Feb 1, 2013

Is this snapping/popping noise that you can hear, or noise that only appears on stream? Also, if it only happens when adding a device, as a workaround I would probably recommend making the webcam a global source or something to prevent it from being reinitialized. Also is says you're using a headset but also have 7.1 audio. Is this correct?

Grimio · Feb 1, 2013

That headset emulates 7.1, quite common for USB gaming headsets as of late.

smacky · Feb 1, 2013

I believe only me and only when I add my webcam. The webcam says in use by OBS and nothing else can use it. Yeah the headset is 7.1 surround, but it does it with it turned on and off.

R1CH · Feb 1, 2013

Might be EMI if you're using integrated / onboard sound.

smacky · Feb 1, 2013

No audio problems while webcam is on in other capture programs like Skype/Webcam Software.

bilehazard · Feb 2, 2013

Make sure your using MJPG as the codec for the cam. I get the same thing when using RGB24.

smacky · Feb 2, 2013

bilehazard said:
Make sure your using MJPG as the codec for the cam. I get the same thing when using RGB24.

This works, thanks bilehazard!!

ottoblix · Apr 7, 2014

I am getting the popping/cracking when I use the DeviceSelection.OutputSound but not when I use DeviceSelection.PlayToDesktop. Any thoughts on this???

Bug Report Audio Snaps and Pops

smacky

New Member

Lain

smacky

New Member

Lain

Grimio

Member

smacky

New Member

R1CH

smacky

New Member

bilehazard

Member

smacky

New Member

ottoblix

New Member