Question / Help 30+ FPS causes stuttering.

M

MaloW

New Member
Hi, kinda new to OBS but I wanna try streaming a bit with a higher than 30 FPS, 45 or 60 I'm thinking.
I have everything set up working good with 720p 30 FPS 4k bit rate, but when I try increasing FPS to 45 the output gets really stuttered and gets reduced FPS.
I'm using Game Capture and I'm playing at a constant 70+ FPS while recording, and I have 10 Mbps upload.

Log file of 2 1-minute tests with 45 and 30 fps:
Code: 
Open Broadcaster Software v0.472b - 64bit (　^ω^)
-------------------------------
CPU Name: Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz
CPU Speed: 3300MHz
Physical Memory:  8174MB Total, 4585MB Free
stepping id: 7, model 10, family 6, type 0, extmodel 1, extfamily 0, HTT 1, logical cores 4, total cores 4
monitor 1: pos={-1920, 0}, size={1920, 1080}
monitor 2: pos={0, 0}, size={1920, 1080}
Windows Version: 6.1 Build 7601 S
Aero is Disabled
------------------------------------------
Adapter 1
  Video Adapter: NVIDIA GeForce GTX 570 
  Video Adapter Dedicated Video Memory: 1293352960
  Video Adapter Shared System Memory: 2952937472


=====Stream Start=====================================================================
  Multithreaded optimizations: On
  Base resolution: 1280x720
  Output resolution: 1280x720
------------------------------------------
Loading up D3D10...
Playback device Default
------------------------------------------
Using desktop audio input: Speakers (ASUS Xonar DS Audio Device)
------------------------------------------
Using auxilary audio input: Microphone (ASUS Xonar DS Audio Device)
------------------------------------------
Audio Encoding: AAC
    bitrate: 192
Using graphics capture
x264: using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
x264: profile High, level 3.2
------------------------------------------
Video Encoding: x264
    fps: 45
    width: 1280, height: 720
    preset: veryfast
    CBR: no
    CFR: no
    max bitrate: 4000
    buffer size: 4000
    quality: 8
------------------------------------------
Using RTMP service: Twitch / Justin.tv
  Server selection: rtmp://live-3c.justin.tv/app
bufferTime: 2438, outputRateWindowTime: 1000, dropThreshold: 2938
SharedTexCapture hooked
RTMPPublisher::BufferedSend: Socket buffer is full (534266 / 536576 bytes), waiting to send 4097 bytes
RTMPPublisher::BufferedSend: Socket buffer is full (534266 / 536576 bytes), waiting to send 4097 bytes
RTMPPublisher::BufferedSend: Socket buffer is full (532569 / 536576 bytes), waiting to send 4097 bytes
RTMPPublisher::BufferedSend: Increasing socket send buffer to ISB 1048576
RTMPPublisher::BufferedSend: Socket buffer is full (532569 / 536576 bytes), waiting to send 4097 bytes
Total frames rendered: 3169, number of frames that lagged: 10 (0.32%) (it's okay for some frames to lag)
RTMPPublisher::SocketLoop: Aborting due to bStopping
Number of b-frames dropped: 85 (2.7%), Number of p-frames dropped: 53 (1.7%), Total 138 (4.4%)
x264: frame I:15    Avg QP:21.57  size: 46019
x264: frame P:1235  Avg QP:25.42  size: 11626
x264: frame B:1873  Avg QP:26.40  size:  2753
x264: consecutive B-frames:  8.9% 20.4% 39.3% 31.5%
x264: mb I  I16..4: 37.0% 37.6% 25.4%
x264: mb P  I16..4:  5.1%  6.6%  0.7%  P16..4: 25.4% 11.2%  3.9%  0.0%  0.0%    skip:47.2%
x264: mb B  I16..4:  1.2%  1.8%  0.2%  B16..8:  9.4%  2.6%  0.2%  direct: 1.8%  skip:82.8%  L0:35.0% L1:53.3% BI:11.6%
x264: 8x8 transform intra:53.2% inter:36.0%
x264: coded y,uvDC,uvAC intra: 44.9% 18.8% 4.8% inter: 6.3% 2.0% 0.0%
x264: i16 v,h,dc,p: 33% 30% 22% 15%
x264: i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  9% 26% 31%  6%  6%  3%  7%  3%  9%
x264: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 26% 24%  5%  7%  4%  7%  3%  7%
x264: i8c dc,h,v,p: 74% 16%  9%  1%
x264: Weighted P-Frames: Y:7.2% UV:0.2%
x264: kb/s:2288.14
=====Stream End=======================================================================
=====Stream Start=====================================================================
  Multithreaded optimizations: On
  Base resolution: 1280x720
  Output resolution: 1280x720
------------------------------------------
Loading up D3D10...
Playback device Default
------------------------------------------
Using desktop audio input: Speakers (ASUS Xonar DS Audio Device)
------------------------------------------
Using auxilary audio input: Microphone (ASUS Xonar DS Audio Device)
------------------------------------------
Audio Encoding: AAC
    bitrate: 192
Using graphics capture
x264: using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
x264: profile High, level 3.1
------------------------------------------
Video Encoding: x264
    fps: 30
    width: 1280, height: 720
    preset: veryfast
    CBR: no
    CFR: no
    max bitrate: 4000
    buffer size: 4000
    quality: 8
------------------------------------------
SharedTexCapture hooked
Using RTMP service: Twitch / Justin.tv
  Server selection: rtmp://live-3c.justin.tv/app
bufferTime: 2118, outputRateWindowTime: 1000, dropThreshold: 2618
RTMPPublisher::BufferedSend: Socket buffer is full (533771 / 536576 bytes), waiting to send 4097 bytes
RTMPPublisher::BufferedSend: Socket buffer is full (533771 / 536576 bytes), waiting to send 4097 bytes
RTMPPublisher::BufferedSend: Socket buffer is full (535950 / 536576 bytes), waiting to send 2710 bytes
RTMPPublisher::BufferedSend: Increasing socket send buffer to ISB 524288
RTMPPublisher::BufferedSend: Socket buffer is full (535950 / 536576 bytes), waiting to send 2710 bytes
Total frames rendered: 2999, number of frames that lagged: 9 (0.30%) (it's okay for some frames to lag)
RTMPPublisher::SocketLoop: Aborting due to bStopping
Number of b-frames dropped: 34 (1.2%), Number of p-frames dropped: 0 (0%), Total 34 (1.2%)
x264: frame I:19    Avg QP:20.63  size: 66702
x264: frame P:1319  Avg QP:25.75  size: 17242
x264: frame B:1623  Avg QP:27.48  size:  4918
x264: consecutive B-frames:  9.8% 43.1% 24.2% 22.8%
x264: mb I  I16..4: 33.7% 35.4% 30.9%
x264: mb P  I16..4:  5.8%  7.8%  1.1%  P16..4: 27.5% 14.5%  5.4%  0.0%  0.0%    skip:37.8%
x264: mb B  I16..4:  1.5%  2.3%  0.4%  B16..8: 13.0%  4.5%  0.5%  direct: 3.0%  skip:74.9%  L0:35.1% L1:48.9% BI:16.0%
x264: 8x8 transform intra:52.5% inter:33.0%
x264: coded y,uvDC,uvAC intra: 49.5% 18.9% 4.9% inter: 10.7% 3.0% 0.1%
x264: i16 v,h,dc,p: 32% 32% 23% 13%
x264: i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  9% 29% 28%  6%  5%  3%  8%  4%  8%
x264: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 16% 26% 23%  6%  7%  5%  8%  4%  6%
x264: i8c dc,h,v,p: 73% 17%  9%  1%
x264: Weighted P-Frames: Y:9.9% UV:4.2%
x264: kb/s:2569.52
=====Stream End=======================================================================

Profiler results:

==============================================================
frame - [100%] [avg time: 3.658 ms] [avg calls per frame: 1] [children: 79.9%] [unaccounted: 20.1%]
| scene->Preprocess - [0.109%] [avg time: 0.004 ms] [avg calls per frame: 1]
| video encoding and uploading - [79.7%] [avg time: 2.917 ms] [avg calls per frame: 1] [children: 30.6%] [unaccounted: 49.2%]
| | CopyResource - [0.601%] [avg time: 0.022 ms] [avg calls per frame: 0]
| | conversion to 4:2:0 - [1.56%] [avg time: 0.057 ms] [avg calls per frame: 0]
| | call to encoder - [28.1%] [avg time: 1.027 ms] [avg calls per frame: 0]
| | sending stuff out - [0.355%] [avg time: 0.013 ms] [avg calls per frame: 0]
==============================================================

VODs of the recordings:
45 FPS: http://www.twitch.tv/malowiz/b/373017304 (First 20 sec is black)
30 FPS: http://www.twitch.tv/malowiz/b/373018378


Ive tried lowering my bit rate to 2k to see if it's my network speed that can't do 4k 45FPS, but that didn't help.
Thanks in advance.
 
R

R1CH

Forum Admin
Developer
45 FPS VOD looks fine here. Most likely a problem with your flash player / GPU decoder / etc.
 
M

MaloW

New Member
R1CH said:
45 FPS VOD looks fine here. Most likely a problem with your flash player / GPU decoder / etc.
Click to expand...

Thanks for the quick response! I asked around a few of my friends to watch the VOD and some reports having the same lag as I do while it works for some. I'm guessing it might have to do with me using Flash 10.3 for Firefox, since everything newer than that crashes a lot. Usually I can watch 60 FPS streams just fine tho, but Ill try updating my flash. Thanks!
 
M

MaloW

New Member
After updating flash it isn't lagging anymore for me! I'll tell all my friends to update it too! Thanks!
 
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