Bug Report obsnvenc.dll crashes

Boildown · Mar 5, 2014

I've experienced two crashes while capturing to the hard drive using the NVENC encoder with a GTX 750 Ti. Am hoping a dev could take a look.

One crash I noticed after 9 hours or so, the other around 3 hours or so, of recording to disk. The first one is a long record, so I didn't think much of it, but I've recorded 3 hour sessions using x264 & OBS hundreds of times without issue; it should not crash. In both cases I had a second instance of OBS streaming to Twitch using x264 encoding (-multi) and they continued to stream without interruption.

I also have about a half-dozen successful NVENC records with the 750 Ti, so it doesn't always happen, and I don't know a way to cause it to happen. In both crashes, the resulting .mp4 was unplayable / corrupted (which is expected when OBS crashes).

<removed URL JIC>

R1CH · Mar 5, 2014

Thanks for the dump files, they were very useful. This looks like a bug in the OBS NVENC encoder or NVENC itself, we'll try and fix it in the next release.

Boildown · Mar 5, 2014

Glad to hear it, I'm really just helping myself :P

R1CH · Mar 6, 2014

What are your max bitrate and keyframe interval set to?

Boildown · Mar 6, 2014

R1CH said:
What are your max bitrate and keyframe interval set to?

20000 bitrate and 5 second interval @ 60fps. The crashed captures didn't save a log file, but I believe the neighboring log files should be the same.

Code:

01:04:43: Open Broadcaster Software v0.612b - 32bit (´・ω・｀)
01:04:43: -------------------------------
01:04:43: CPU Name: Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz
01:04:43: CPU Speed: 3400MHz
01:04:43: Physical Memory:  4095MB Total, 4095MB Free
01:04:43: stepping id: 7, model 42, family 6, type 0, extmodel 1, extfamily 0, HTT 1, logical cores 8, total cores 4
01:04:43: monitor 1: pos={0, 0}, size={1680, 1050}
01:04:43: Windows Version: 6.1 Build 7601 S
01:04:43: Aero is Disabled
01:04:43: -------------------------------
01:04:43: OBS Modules:
01:04:43: Base Address     Module
01:04:43: 01150000         OBS.exe
01:04:43: 73100000         OBSApi.dll
01:04:43: 73560000         DatapathPlugin.dll
01:04:43: 73BA0000         DShowPlugin.dll
01:04:43: 73540000         GraphicsCapture.dll
01:04:43: 73520000         NoiseGate.dll
01:04:43: 73500000         PSVPlugin.dll
01:04:43: ------------------------------------------
01:04:43: Adapter 1
01:04:43:   Video Adapter: NVIDIA GeForce GTX 750 Ti
01:04:43:   Video Adapter Dedicated Video Memory: 2070609920
01:04:43:   Video Adapter Shared System Memory: 2147807232
01:04:43:   Video Adapter Output 1: pos={0, 0}, size={1680, 1050}, attached=true
01:04:43: =====Stream Start: 2014-02-23, 01:04:43===============================================
01:04:43:   Multithreaded optimizations: On
01:04:43:   Base resolution: 1920x1080
01:04:43:   Output resolution: 1920x1080
01:04:43: ------------------------------------------
01:04:43: Loading up D3D10 on NVIDIA GeForce GTX 750 Ti (Adapter 1)...
01:04:43: ------------------------------------------
01:04:43: Audio Format: 44100hz
01:04:43: Playback device Default
01:04:43: ------------------------------------------
01:04:43: Using desktop audio input: Speakers (Creative SB X-Fi)
01:04:43: ------------------------------------------
01:04:43: Using auxilary audio input: Microphone (3- USB Audio Device)
01:04:43: ------------------------------------------
01:04:43: Audio Encoding: AAC
01:04:43:     bitrate: 192
01:04:44: Scene buffering time set to 700
01:04:44: ObsNvenc{32,64}.dll not present
01:04:44: Successfully loaded ObsNvenc.dll
01:04:44: ObsNvenc initialized successfully
01:04:44: CUDA loaded successfully
01:04:44: 1 CUDA capable devices found
01:04:44: [ GPU #0 - < GeForce GTX 750 Ti > has Compute SM 5.0, NVENC Available ]
01:04:44: NVENC internal init finished successfully
01:04:44: NVENC supports 7 h264 presets
01:04:44: ------------------------------------------
01:04:44: Video Encoding: NVENC
01:04:44:     fps: 60
01:04:44:     width: 1920, height: 1080
01:04:44:     preset: hq
01:04:44:     profile: high
01:04:44:     level: autoselect
01:04:44:     keyint: 300
01:04:44:     CBR: yes
01:04:44:     CFR: yes
01:04:44:     max bitrate: 20000
01:04:44:     buffer size: 20000
01:04:44: ------------------------------------------
01:04:44: Audio timestamp for device 'Microphone (3- USB Audio Device)' was behind target timestamp by 29824108
02:09:34: Total frames encoded: 233367, total frames duplicated: 468 (0.20%)
02:09:34: Total frames rendered: 233374, number of late frames: 1 (0.00%) (it's okay for some frames to be late)
02:09:34: Encoder closed
02:09:34: NVENC deinitialized
02:09:34: 
02:09:34: Profiler time results:
02:09:34: 
02:09:34: ==============================================================
02:09:34: video thread frame - [100%] [avg time: 1.109 ms] [children: 7.21%] [unaccounted: 92.8%]
02:09:34: | scene->Preprocess - [0.0902%] [avg time: 0.001 ms]
02:09:34: | GPU download and conversion - [7.12%] [avg time: 0.079 ms] [children: 5.14%] [unaccounted: 1.98%]
02:09:34: | | flush - [2.8%] [avg time: 0.031 ms]
02:09:34: | | CopyResource - [1.44%] [avg time: 0.016 ms]
02:09:34: | | conversion to 4:2:0 - [0.902%] [avg time: 0.01 ms]
02:09:34: Convert444Threads - [100%] [avg time: 1.021 ms] [children: 99.4%] [unaccounted: 0.588%]
02:09:34: | Convert444toNV12 - [99.4%] [avg time: 1.015 ms]
02:09:34: encoder thread frame - [100%] [avg time: 3.276 ms] [children: 0.916%] [unaccounted: 99.1%]
02:09:34: | sending stuff out - [0.916%] [avg time: 0.03 ms]
02:09:34: ==============================================================
02:09:34: 
02:09:34: 
02:09:34: Profiler CPU results:
02:09:34: 
02:09:34: ==============================================================
02:09:34: video thread frame - [cpu time: avg 0.72 ms, total 168047 ms] [avg calls per frame: 1]
02:09:34: | scene->Preprocess - [cpu time: avg 0 ms, total 0 ms] [avg calls per frame: 1]
02:09:34: | GPU download and conversion - [cpu time: avg 0.046 ms, total 10796.9 ms] [avg calls per frame: 1]
02:09:34: | | flush - [cpu time: avg 0.026 ms, total 6234.38 ms] [avg calls per frame: 1]
02:09:34: | | CopyResource - [cpu time: avg 0.006 ms, total 1593.75 ms] [avg calls per frame: 1]
02:09:34: | | conversion to 4:2:0 - [cpu time: avg 0.003 ms, total 859.375 ms] [avg calls per frame: 1]
02:09:34: Convert444Threads - [cpu time: avg 0.935 ms, total 436438 ms] [avg calls per frame: 2]
02:09:34: | Convert444toNV12 - [cpu time: avg 0.93 ms, total 434406 ms] [avg calls per frame: 2]
02:09:34: encoder thread frame - [cpu time: avg 1.508 ms, total 351984 ms] [avg calls per frame: 1]
02:09:34: | sending stuff out - [cpu time: avg 0.035 ms, total 8375 ms] [avg calls per frame: 1]
02:09:34: ==============================================================
02:09:34: 
02:09:34: =====Stream End: 2014-02-23, 02:09:34=================================================
02:10:47: Memory Leaks Were Detected.
02:10:47:

Code:

18:30:09: Open Broadcaster Software v0.612b - 32bit (´・ω・｀)
18:30:09: -------------------------------
18:30:09: CPU Name: Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz
18:30:09: CPU Speed: 3400MHz
18:30:09: Physical Memory:  4095MB Total, 4095MB Free
18:30:09: stepping id: 7, model 42, family 6, type 0, extmodel 1, extfamily 0, HTT 1, logical cores 8, total cores 4
18:30:09: monitor 1: pos={0, 0}, size={1680, 1050}
18:30:09: Windows Version: 6.1 Build 7601 S
18:30:09: Aero is Disabled
18:30:09: -------------------------------
18:30:09: OBS Modules:
18:30:09: Base Address     Module
18:30:09: 00050000         OBS.exe
18:30:09: 735C0000         OBSApi.dll
18:30:09: 73C10000         DatapathPlugin.dll
18:30:09: 732A0000         DShowPlugin.dll
18:30:09: 73280000         GraphicsCapture.dll
18:30:09: 73260000         NoiseGate.dll
18:30:09: 73240000         PSVPlugin.dll
18:30:09: ------------------------------------------
18:30:09: Adapter 1
18:30:09:   Video Adapter: NVIDIA GeForce GTX 750 Ti
18:30:09:   Video Adapter Dedicated Video Memory: 2070609920
18:30:09:   Video Adapter Shared System Memory: 2147807232
18:30:09:   Video Adapter Output 1: pos={0, 0}, size={1680, 1050}, attached=true
18:30:09: =====Stream Start: 2014-02-28, 18:30:09===============================================
18:30:09:   Multithreaded optimizations: On
18:30:09:   Base resolution: 1920x1080
18:30:09:   Output resolution: 1920x1080
18:30:09: ------------------------------------------
18:30:09: Loading up D3D10 on NVIDIA GeForce GTX 750 Ti (Adapter 1)...
18:30:09: ------------------------------------------
18:30:09: Audio Format: 44100hz
18:30:09: Playback device Default
18:30:09: ------------------------------------------
18:30:09: Using desktop audio input: Speakers (Creative SB X-Fi)
18:30:09: ------------------------------------------
18:30:09: Using auxilary audio input: Microphone (3- USB Audio Device)
18:30:09: ------------------------------------------
18:30:09: Audio Encoding: AAC
18:30:09:     bitrate: 192
18:30:09: Scene buffering time set to 700
18:30:09: ObsNvenc{32,64}.dll not present
18:30:09: Successfully loaded ObsNvenc.dll
18:30:09: ObsNvenc initialized successfully
18:30:09: CUDA loaded successfully
18:30:09: 1 CUDA capable devices found
18:30:09: [ GPU #0 - < GeForce GTX 750 Ti > has Compute SM 5.0, NVENC Available ]
18:30:09: NVENC internal init finished successfully
18:30:09: NVENC supports 7 h264 presets
18:30:09: ------------------------------------------
18:30:09: Video Encoding: NVENC
18:30:09:     fps: 60
18:30:09:     width: 1920, height: 1080
18:30:09:     preset: hq
18:30:09:     profile: high
18:30:09:     level: autoselect
18:30:09:     keyint: 300
18:30:09:     CBR: no
18:30:09:     CFR: yes
18:30:09:     max bitrate: 20000
18:30:09:     buffer size: 0
18:30:09: ------------------------------------------
22:12:43: Total frames encoded: 801218, total frames duplicated: 1160 (0.14%)
22:12:43: Total frames rendered: 801225, number of late frames: 0 (0.00%) (it's okay for some frames to be late)
22:12:43: Encoder closed
22:12:43: NVENC deinitialized
22:12:43: 
22:12:43: Profiler time results:
22:12:43: 
22:12:43: ==============================================================
22:12:43: video thread frame - [100%] [avg time: 0.984 ms] [children: 6.81%] [unaccounted: 93.2%]
22:12:43: | scene->Preprocess - [0.102%] [avg time: 0.001 ms]
22:12:43: | GPU download and conversion - [6.71%] [avg time: 0.066 ms] [children: 4.88%] [unaccounted: 1.83%]
22:12:43: | | flush - [2.74%] [avg time: 0.027 ms]
22:12:43: | | CopyResource - [1.22%] [avg time: 0.012 ms]
22:12:43: | | conversion to 4:2:0 - [0.915%] [avg time: 0.009 ms]
22:12:43: Convert444Threads - [100%] [avg time: 0.986 ms] [children: 99.3%] [unaccounted: 0.71%]
22:12:43: | Convert444toNV12 - [99.3%] [avg time: 0.979 ms]
22:12:43: encoder thread frame - [100%] [avg time: 3.322 ms] [children: 1.48%] [unaccounted: 98.5%]
22:12:43: | sending stuff out - [1.48%] [avg time: 0.049 ms]
22:12:43: ==============================================================
22:12:43: 
22:12:43: 
22:12:43: Profiler CPU results:
22:12:43: 
22:12:43: ==============================================================
22:12:43: video thread frame - [cpu time: avg 0.567 ms, total 454563 ms] [avg calls per frame: 1]
22:12:43: | scene->Preprocess - [cpu time: avg 0 ms, total 78.125 ms] [avg calls per frame: 1]
22:12:43: | GPU download and conversion - [cpu time: avg 0.035 ms, total 28218.8 ms] [avg calls per frame: 1]
22:12:43: | | flush - [cpu time: avg 0.022 ms, total 17828.1 ms] [avg calls per frame: 1]
22:12:43: | | CopyResource - [cpu time: avg 0.003 ms, total 2531.25 ms] [avg calls per frame: 1]
22:12:43: | | conversion to 4:2:0 - [cpu time: avg 0.002 ms, total 2281.25 ms] [avg calls per frame: 1]
22:12:43: Convert444Threads - [cpu time: avg 0.987 ms, total 1.58206e+006 ms] [avg calls per frame: 2]
22:12:43: | Convert444toNV12 - [cpu time: avg 0.982 ms, total 1.57495e+006 ms] [avg calls per frame: 2]
22:12:43: encoder thread frame - [cpu time: avg 1.521 ms, total 1.21902e+006 ms] [avg calls per frame: 1]
22:12:43: | sending stuff out - [cpu time: avg 0.054 ms, total 43656.3 ms] [avg calls per frame: 1]
22:12:43: ==============================================================
22:12:43: 
22:12:43: =====Stream End: 2014-02-28, 22:12:43=================================================
22:13:32: Memory Leaks Were Detected.
22:13:32:

I don't recall if the Feb 23rd capture was on 20000/20000 CBR or 20000/0 VBR like the Feb 28th capture would have been.

R1CH · Mar 6, 2014

You can try the dev channel (master) build from http://builds.catchexception.org/, it should fix the issue.

Boildown · Mar 10, 2014

So far so good, no further of these crashes with the dev channel or now the latest version.

Also, fewer duplicated frames for some reason (avg 0.19% down to avg of ~0.06%).

Bug Report obsnvenc.dll crashes

Boildown

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R1CH

Boildown

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R1CH

Boildown

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R1CH

Boildown

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