Question / Help Twitch Studdering

A

aft5014

New Member
I'm having some issues with my Twitch stream studdering. The stream will run fine for a few seconds, then lag for one, before resuming. There is no in-game lag for me while playing, but when I have a friend check the stream out, they will see the studdering. There is also no apparent studdering on the stream preview from the Twitch Dashboard section when streaming.

My log is attached, I had tried upping x264 to superfast for this test, but the studdering still occured. I'm sitting on a pretty beefy internet connection (~30 Mbps up), so I'm not really sure what is causing this much studdering, when I used to stream SC2 w/ no lag like this at all.

My specs:
intel i7 930 sandy
geforce 470
6 gigs RAM

Code: 
Open Broadcaster Software v0.47a - 32bit (´・ω・｀)
-------------------------------
CPU Name: Intel(R) Core(TM) i7 CPU         930  @ 2.80GHz
CPU Speed: 2806MHz
Physical Memory:  4095MB Total, 4095MB Free
stepping id: 5, model 10, family 6, type 0, extmodel 0, extfamily 0, HTT 1, logical cores 8, total cores 4
Windows Version: 6.1 Build 7601 S
Aero is Disabled
------------------------------------------
Adapter 1
  Video Adapter: NVIDIA GeForce GTX 470
  Video Adapter Dedicated Video Memory: 1293352960
  Video Adapter Shared System Memory: 2948132864
=====Stream Start=====================================================================
  Multithreaded optimizations: On
  Base resolution: 1280x720
  Output resolution: 1280x720
------------------------------------------
Loading up D3D10...
Playback device Default
------------------------------------------
Using desktop audio input: Speakers (High Definition Audio Device)
------------------------------------------
Using auxilary audio input: Microphone (High Definition Audio Device)
------------------------------------------
Audio Encoding: AAC
    bitrate: 128
Using graphics capture
------------------------------------------
Video Encoding: x264
    fps: 60
    width: 1280, height: 720
    preset: superfast
    CBR: no
    CFR: no
    max bitrate: 5000
    buffer size: 10000
    quality: 8
------------------------------------------
SharedTexCapture hooked
SharedTexCapture hooked
SharedTexCapture hooked
SharedTexCapture hooked
Total frames rendered: 1414, number of frames that lagged: 10 (0.71%) (it's okay for some frames to lag)
=====Stream End=======================================================================
=====Stream Start=====================================================================
  Multithreaded optimizations: On
  Base resolution: 1280x720
  Output resolution: 1280x720
------------------------------------------
Loading up D3D10...
Playback device Default
------------------------------------------
Using desktop audio input: Speakers (High Definition Audio Device)
------------------------------------------
Using auxilary audio input: Microphone (High Definition Audio Device)
------------------------------------------
Audio Encoding: AAC
    bitrate: 128
Using graphics capture
------------------------------------------
Video Encoding: x264
    fps: 60
    width: 1280, height: 720
    preset: superfast
    CBR: no
    CFR: no
    max bitrate: 5000
    buffer size: 10000
    quality: 8
------------------------------------------
SharedTexCapture hooked
SharedTexCapture hooked
Using RTMP service: Twitch / Justin.tv
  Server selection: rtmp://live-iad.justin.tv/app
bufferTime: 1816, outputRateWindowTime: 1000, dropThreshold: 2316
SharedTexCapture hooked
SharedTexCapture hooked
SharedTexCapture hooked
SharedTexCapture hooked
SharedTexCapture hooked
SharedTexCapture hooked
SharedTexCapture hooked
SharedTexCapture hooked
SharedTexCapture hooked
SharedTexCapture hooked
Total frames rendered: 89876, number of frames that lagged: 2268 (2.52%) (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: 5.943 ms] [avg calls per frame: 1] [children: 88%] [unaccounted: 12%]
| scene->Preprocess - [0.0673%] [avg time: 0.004 ms] [avg calls per frame: 1]
| video encoding and uploading - [87.9%] [avg time: 5.223 ms] [avg calls per frame: 1] [children: 26.5%] [unaccounted: 61.4%]
| | CopyResource - [0.337%] [avg time: 0.02 ms] [avg calls per frame: 0]
| | conversion to 4:2:0 - [0.555%] [avg time: 0.033 ms] [avg calls per frame: 0]
| | call to encoder - [25.3%] [avg time: 1.504 ms] [avg calls per frame: 0]
| | sending stuff out - [0.303%] [avg time: 0.018 ms] [avg calls per frame: 0]
==============================================================

Thank you for any help.
 
G

Grimio

Member
While it's cool that you have a great internet connection, twitch does not allow extremely high bitrates(they see it as abuse of their service). I suggest you stay withing sane bitrate numbers, like 4000/4000 maximum.
 
A

aft5014

New Member
I bumped the bitrates down to 4000/4000 and even dropped down to 480p, but viewers did not see any changes.
 
R

R1CH

Forum Admin
Developer
Your log looks fine (although the bitrate was definitely too high), the issue is likely on the viewer's end.
 
A

aft5014

New Member
www.twitch.tv/bayloader is my twitch channel, has some short testing vods w/ different games (dota 2, DMC, PoE). The last two vods were the ones where I knocked it down to 480p I believe.

Thanks again for all the help.
 
G

Grimio

Member
I have no problems watching your vod's. It's probably a problem between twitch and the affected viewers.
You can help by reducing the bitrate further(between 3000 and 3500 should still be good for 720p).
 
O

oatz

New Member
I'm getting the same exact thing.

Code: 
Open Broadcaster Software v0.47a - 32bit (´・ω・｀)
-------------------------------
CPU Name: Intel(R) Core(TM) i5-3570K CPU @ 3.40GHz
CPU Speed: 3411MHz
Physical Memory:  4095MB Total, 4095MB Free
stepping id: 9, 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 6800 Series
  Video Adapter Dedicated Video Memory: 1059811328
  Video Adapter Shared System Memory: 4008120320
=====Stream Start=====================================================================
  Multithreaded optimizations: On
  Base resolution: 1680x1050
  Output resolution: 1120x700
------------------------------------------
Loading up D3D10...
Playback device Default
------------------------------------------
Using desktop audio input: Speakers (Realtek High Definition Audio)
------------------------------------------
Using auxilary audio input: Microphone (4- Plantronics Wireless Audio)
------------------------------------------
Audio Encoding: AAC
    bitrate: 64
Using graphics capture
------------------------------------------
Video Encoding: x264
    fps: 60
    width: 1120, height: 700
    preset: veryfast
    CBR: no
    CFR: no
    max bitrate: 2500
    buffer size: 2800
    quality: 7
------------------------------------------
++++++++++++++++++++++++++++++++++++++++++++++++++++++
  New Scene
Using Window Capture
++++++++++++++++++++++++++++++++++++++++++++++++++++++
  New Scene
Using graphics capture
Using graphics capture
Total frames rendered: 1322, number of frames that lagged: 85 (6.43%) (it's okay for some frames to lag)
=====Stream End=======================================================================
 
B

bart2712

Member
I agree, i think the issue is something with twitch and the ppl telling you its laggy cuz none of them were laggy at all for me.

As for oatz, try maybe lowering the fps below 60...i tried using 60 fps in OBS and had lag on mine also, but when i used same settings but with 30 or less fps, then it ran completely fine.
 
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