Question / Help Drop in audio quality on local record

M

mdandrewm

New Member
Not sure if it's OBS, but I tried recording with XSplit as well and did not hear the same issues.

I'm getting crackles and pops or other forms of distortion in the audio that I am recording to a file with OBS. It kicks in at 30-40 seconds. They're not major, but they're definitely noticeable and are getting frustrating (I've tried moving my mic away from my mouth and all sorts of other stuff).

Is this something that is a known issue (i did some simple searching on the forums and didn't find anything)?

After writing this up I thought to use my webcam mic. Though the overall quality was worse, it lacked the pops, which suggests that it is my Logitech G930s that are the issue, but I figure I'll throw this post up anyway just in case.

Thanks in advance!
 
L

Lain

Forum Admin
Lain
Forum Moderator
Developer
It depends on what you have in your scene. Sometimes interference of the audio can happen when there's too much stuff going on with the system at once. For example, do you have a webcam? If so, have you tried to see if it happens with the webcam off? OBS usually defaults the webcam to a higher resolution than it really should be using, so that occasionally happens. There are a few other factors as well, sometimes it's just the ports they're plugged in to, sometimes it's the webcam and other things causing interference.
 
M

mdandrewm

New Member
I apologize for the delayed response; i forgot to get notifications when posting.

I have been running a good number of experiments to try to find the source. I am using a game capture and that's about it. I have tried with and without the game capture, moving USB ports for my headset, changing headsets (a friend loaned me the same model headset he owns) and reinstalling drivers.

At this point I have listened to so much audio that I don't know what's a pop or what's general noise.

My log file:
note: the automatic analyzer suggested to increase bitrate. I'm not sure that affects local recordings, but i upped it to recommended for 1080p and have continued testing.

Code: 
11:02:29: Open Broadcaster Software v0.60b - 64bit (　^ω^)
11:02:29: -------------------------------
11:02:29: CPU Name: Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz
11:02:29: CPU Speed: 3392MHz
11:02:29: Physical Memory:  16344MB Total, 13587MB Free
11:02:29: stepping id: 9, model 58, family 6, type 0, extmodel 1, extfamily 0, HTT 1, logical cores 8, total cores 4
11:02:29: monitor 1: pos={0, 0}, size={1920, 1080}
11:02:29: monitor 2: pos={-1920, 0}, size={1920, 1080}
11:02:29: monitor 3: pos={1920, 0}, size={1920, 1080}
11:02:29: Windows Version: 6.1 Build 7601 S
11:02:29: Aero is Enabled
11:02:29: -------------------------------
11:02:29: OBS Modules:
11:02:29: Base Address     Module
11:02:29: 000000003FCF0000 OBS.exe
11:02:29: 00000000E8D70000 OBSApi.dll
11:02:29: 00000000F7A80000 DShowPlugin.dll
11:02:29: 00000000F7940000 GraphicsCapture.dll
11:02:29: 00000000F9C20000 NoiseGate.dll
11:02:29: 00000000F9B70000 PSVPlugin.dll
11:02:29: ------------------------------------------
11:02:29: Adapter 1
11:02:29:   Video Adapter: AMD Radeon HD 6900 Series
11:02:29:   Video Adapter Dedicated Video Memory: 2126168064
11:02:29:   Video Adapter Shared System Memory: 4005593088
11:02:29:   Video Adapter Output 1: pos={0, 0}, size={1920, 1080}, attached=true
11:02:29:   Video Adapter Output 2: pos={-1920, 0}, size={1920, 1080}, attached=true
11:02:29:   Video Adapter Output 3: pos={1920, 0}, size={1920, 1080}, attached=true
11:02:29: =====Stream Start: 2014-02-15, 11:02:29===============================================
11:02:29:   Multithreaded optimizations: On
11:02:29:   Base resolution: 1920x1080
11:02:29:   Output resolution: 1920x1080
11:02:29: ------------------------------------------
11:02:29: Loading up D3D10 on AMD Radeon HD 6900 Series (Adapter 1)...
11:02:29: ------------------------------------------
11:02:29: Audio Format: 48000hz
11:02:29: Playback device Default
11:02:29: ------------------------------------------
11:02:29: Using desktop audio input: Speakers (High Definition Audio Device)
11:02:29: ------------------------------------------
11:02:29: Using auxilary audio input: Microphone (Logitech G930 Headset)
11:02:29: ------------------------------------------
11:02:29: Audio Encoding: AAC
11:02:29:     bitrate: 128
11:02:29: Using Window Capture
11:02:29: Scene buffering time set to 700
11:02:29: ------------------------------------------
11:02:29: Video Encoding: x264
11:02:29:     fps: 30
11:02:29:     width: 1920, height: 1080
11:02:29:     preset: veryfast
11:02:29:     profile: high
11:02:29:     keyint: 250
11:02:29:     CBR: yes
11:02:29:     CFR: yes
11:02:29:     max bitrate: 1000
11:02:29:     buffer size: 1000
11:02:29: ------------------------------------------
11:03:31: Total frames encoded: 1847, total frames duplicated: 1 (0.05%)
11:03:31: Total frames rendered: 1851, number of late frames: 0 (0.00%) (it's okay for some frames to be late)
11:03:32: 
11:03:32: Profiler time results:
11:03:32: 
11:03:32: ==============================================================
11:03:32: video thread frame - [100%] [avg time: 0.837 ms] [children: 68.7%] [unaccounted: 31.3%]
11:03:32: | scene->Preprocess - [58.3%] [avg time: 0.488 ms]
11:03:32: | GPU download and conversion - [10.4%] [avg time: 0.087 ms] [children: 9.32%] [unaccounted: 1.08%]
11:03:32: | | flush - [8.24%] [avg time: 0.069 ms]
11:03:32: | | CopyResource - [0.836%] [avg time: 0.007 ms]
11:03:32: | | conversion to 4:2:0 - [0.239%] [avg time: 0.002 ms]
11:03:32: Convert444Threads - [100%] [avg time: 1.064 ms] [children: 99.5%] [unaccounted: 0.47%]
11:03:32: | Convert444toNV12 - [99.5%] [avg time: 1.059 ms]
11:03:32: encoder thread frame - [100%] [avg time: 1.679 ms]
11:03:32: ==============================================================
11:03:32: 
11:03:32: 
11:03:32: Profiler CPU results:
11:03:32: 
11:03:32: ==============================================================
11:03:32: video thread frame - [cpu time: avg 0.058 ms, total 109.2 ms] [avg calls per frame: 1]
11:03:32: | scene->Preprocess - [cpu time: avg 0 ms, total 0 ms] [avg calls per frame: 1]
11:03:32: | GPU download and conversion - [cpu time: avg 0.058 ms, total 109.2 ms] [avg calls per frame: 1]
11:03:32: | | flush - [cpu time: avg 0.058 ms, total 109.2 ms] [avg calls per frame: 1]
11:03:32: | | CopyResource - [cpu time: avg 0 ms, total 0 ms] [avg calls per frame: 1]
11:03:32: | | conversion to 4:2:0 - [cpu time: avg 0 ms, total 0 ms] [avg calls per frame: 1]
11:03:32: Convert444Threads - [cpu time: avg 1.131 ms, total 4134.03 ms] [avg calls per frame: 2]
11:03:32: | Convert444toNV12 - [cpu time: avg 1.122 ms, total 4102.83 ms] [avg calls per frame: 2]
11:03:32: encoder thread frame - [cpu time: avg 0.991 ms, total 1809.61 ms] [avg calls per frame: 1]
11:03:32: ==============================================================
11:03:32: 
11:03:32: =====Stream End: 2014-02-15, 11:03:32=================================================
11:05:54: =====Stream Start: 2014-02-15, 11:05:54===============================================
11:05:54:   Multithreaded optimizations: On
11:05:54:   Base resolution: 1920x1080
11:05:54:   Output resolution: 1920x1080
11:05:54: ------------------------------------------
11:05:54: Loading up D3D10 on AMD Radeon HD 6900 Series (Adapter 1)...
11:05:54: ------------------------------------------
11:05:54: Audio Format: 48000hz
11:05:54: Playback device Default
11:05:54: ------------------------------------------
11:05:54: Using desktop audio input: Speakers (Logitech G930 Headset)
11:05:54: Using 7.1 surround speaker setup
11:05:54: ------------------------------------------
11:05:54: Using auxilary audio input: Microphone (Logitech G930 Headset)
11:05:54: ------------------------------------------
11:05:54: Audio Encoding: AAC
11:05:54:     bitrate: 128
11:05:54: Using Window Capture
11:05:54: Scene buffering time set to 700
11:05:54: ------------------------------------------
11:05:54: Video Encoding: x264
11:05:54:     fps: 30
11:05:54:     width: 1920, height: 1080
11:05:54:     preset: veryfast
11:05:54:     profile: high
11:05:54:     keyint: 250
11:05:54:     CBR: yes
11:05:54:     CFR: yes
11:05:54:     max bitrate: 1000
11:05:54:     buffer size: 1000
11:05:54: ------------------------------------------
11:05:55: Audio timestamp for device 'Microphone (Logitech G930 Headset)' was behind target timestamp by 9029654
11:07:00: Total frames encoded: 1974, total frames duplicated: 0 (0.00%)
11:07:00: Total frames rendered: 1980, number of late frames: 1 (0.05%) (it's okay for some frames to be late)
11:07:01: 
11:07:01: Profiler time results:
11:07:01: 
11:07:01: ==============================================================
11:07:01: video thread frame - [100%] [avg time: 0.477 ms] [children: 41.5%] [unaccounted: 58.5%]
11:07:01: | scene->Preprocess - [24.3%] [avg time: 0.116 ms]
11:07:01: | GPU download and conversion - [17.2%] [avg time: 0.082 ms] [children: 15.1%] [unaccounted: 2.1%]
11:07:01: | | flush - [13.4%] [avg time: 0.064 ms]
11:07:01: | | CopyResource - [1.47%] [avg time: 0.007 ms]
11:07:01: | | conversion to 4:2:0 - [0.21%] [avg time: 0.001 ms]
11:07:01: Convert444Threads - [100%] [avg time: 1.054 ms] [children: 99.5%] [unaccounted: 0.474%]
11:07:01: | Convert444toNV12 - [99.5%] [avg time: 1.049 ms]
11:07:01: encoder thread frame - [100%] [avg time: 1.67 ms]
11:07:01: ==============================================================
11:07:01: 
11:07:01: 
11:07:01: Profiler CPU results:
11:07:01: 
11:07:01: ==============================================================
11:07:01: video thread frame - [cpu time: avg 0 ms, total 0 ms] [avg calls per frame: 1]
11:07:01: | scene->Preprocess - [cpu time: avg 0 ms, total 0 ms] [avg calls per frame: 1]
11:07:01: | GPU download and conversion - [cpu time: avg 0 ms, total 0 ms] [avg calls per frame: 1]
11:07:01: | | flush - [cpu time: avg 0 ms, total 0 ms] [avg calls per frame: 1]
11:07:01: | | CopyResource - [cpu time: avg 0 ms, total 0 ms] [avg calls per frame: 1]
11:07:01: | | conversion to 4:2:0 - [cpu time: avg 0 ms, total 0 ms] [avg calls per frame: 1]
11:07:01: Convert444Threads - [cpu time: avg 1.053 ms, total 4118.43 ms] [avg calls per frame: 2]
11:07:01: | Convert444toNV12 - [cpu time: avg 1.053 ms, total 4118.43 ms] [avg calls per frame: 2]
11:07:01: encoder thread frame - [cpu time: avg 1.006 ms, total 1965.61 ms] [avg calls per frame: 1]
11:07:01: ==============================================================
11:07:01: 
11:07:01: =====Stream End: 2014-02-15, 11:07:01=================================================
 
dodgepong

dodgepong

Administrator
Community Helper
Yeah, I had issues with my USB 3.0 drivers on my old motherboard. DPC latency issues drove me mad. I definitely recommend avoiding ASMedia/Eltron USB 3.0 ports...Intel and Renesas are where it's at.
 
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