OBS won't record but once in a session

[Tangential]

I am running 25.0.8 with Windows 10 pro (64 bit version 1903 build 18362.900) on an HP Zbook with 32 gig ram.

OBS has suddenly stopped recording. I record to an empty drive that shows 658 Gig free so there is space. When I start a session I can press record and it begins recording fine. When I press stop, the confirmation dialog pops up and I tell it to stop and it does. For the remainder of that session, every time I press Start record, the stop dialog pops up (and of course nothing records.) I've tried changing themes but it doesn't seem to be related to that.Akso, after I quit OBS, a process continues to run.

Nothing is written to the log file showing the failed attempts to record.

Any advice would be appreciated.

 

[Tangential]

Is there any way to increase the diagnostic output of OBS in windows? I've built a new single scene collection using built in mic and webcam and I get the same behavior. Start record works fine the first time i press it in a session. Stop puts up the confirmation dialog and it appears to stop. The next time I press Start Record the Stop confirmation dialog appears. From that point on the session will not record. Also when I quit OBS some processes are left around that I have to kill before I can start a new session.


The weird thing is that the log reflects none of this. If you look at the log it looks like I made a brief recording and then I quit OBS.

18:25:21.919: ==== Recording Stop ================================================
18:25:46.658: ==== Shutting down ==================================================

In reality, I tried to record several times and interacted with the stop record button. The log didn't even finish until I exit OBS and then killed the process.

Could this be an ffmpeg problem?

Here is the complete (and short) log.

I could really use some help with this.

18:25:01.878: CoInitializeEx succeeded: 0x00000001
18:25:01.878: CPU Name: Intel(R) Core(TM) i7-4800MQ CPU @ 2.70GHz
18:25:01.878: CPU Speed: 2694MHz
18:25:01.878: Physical Cores: 4, Logical Cores: 8
18:25:01.878: Physical Memory: 32185MB Total, 27368MB Free
18:25:01.878: Windows Version: 10.0 Build 18362 (release: 1903; revision: 900; 64-bit)
18:25:01.878: Running as administrator: true
18:25:01.878: Aero is Enabled (Aero is always on for windows 8 and above)
18:25:01.879: Windows 10 Gaming Features:
18:25:01.879:     Game DVR: On
18:25:01.881: Sec. Software Status:
18:25:01.882:     Windows Defender Antivirus: enabled (AV)
18:25:01.890:     Windows Firewall: enabled (FW)
18:25:01.890: Current Date/Time: 2020-06-18, 18:25:01
18:25:01.890: Browser Hardware Acceleration: true
18:25:01.890: Portable mode: false
18:25:02.327: OBS 25.0.8 (64-bit, windows)
18:25:02.327: ---------------------------------
18:25:02.353: ---------------------------------
18:25:02.353: audio settings reset:
18:25:02.353:     samples per sec: 44100
18:25:02.353:     speakers:        2
18:25:02.354: ---------------------------------
18:25:02.354: Initializing D3D11...
18:25:02.354: Available Video Adapters:
18:25:02.369:     Adapter 0: NVIDIA Quadro K2100M
18:25:02.369:       Dedicated VRAM: 2104754176
18:25:02.369:       Shared VRAM:    3989362688
18:25:02.369:       PCI ID:         10de:11fc
18:25:02.370:       Driver Version: 25.21.14.2625
18:25:02.370:       output 0: pos={0, 0}, size={1920, 1080}, attached=true, refresh=60, name=
18:25:02.370:     Adapter 1: Intel(R) HD Graphics 4600
18:25:02.370:       Dedicated VRAM: 117964800
18:25:02.370:       Shared VRAM:    2147483648
18:25:02.370:       PCI ID:         8086:416
18:25:02.372:       Driver Version: 20.19.15.5063
18:25:02.387: Loading up D3D11 on adapter NVIDIA Quadro K2100M (0)
18:25:02.886: D3D11 loaded successfully, feature level used: b000
18:25:02.886: DXGI increase maximum frame latency success
18:25:02.886: D3D11 GPU priority setup success
18:25:03.819: ---------------------------------
18:25:03.819: video settings reset:
18:25:03.819:     base resolution:   1920x1080
18:25:03.819:     output resolution: 1280x720
18:25:03.819:     downscale filter:  Bicubic
18:25:03.819:     fps:               30/1
18:25:03.819:     format:            NV12
18:25:03.819:     YUV mode:          601/Partial
18:25:03.819: NV12 texture support enabled
18:25:03.820: Audio monitoring device:
18:25:03.820:     name: Default
18:25:03.820:     id: default
18:25:03.820: ---------------------------------
18:25:03.823: [CoreAudio encoder]: CoreAudio AAC encoder not installed on the system or couldn't be loaded
18:25:03.824: Failed to load 'en-US' text for module: 'decklink-ouput-ui.dll'
18:25:03.893: [AMF] Unable to load 'amfrt64.dll', error code 126.
18:25:03.905: [AMF] AMF Test failed due to one or more errors.
18:25:03.905: Failed to initialize module 'enc-amf.dll'
18:25:03.953: [obs-browser]: Version 2.8.6
18:25:03.969: NVENC supported
18:25:03.996: [StreamFX] Loading Version 0.8.0.0-e343e4cb
18:25:04.010: [StreamFX] <NVIDIA Face Tracking Filter> Failed to load 'cuDevicePrimaryCtxRelease' from 'nvcuda.dll'.
18:25:04.336: [StreamFX] Loaded Version 0.8.0.0-e343e4cb
18:25:04.353: VLC found, VLC video source enabled
18:25:04.366: Decklink API Compiled version 10.11.4
18:25:04.366: Decklink API Installed version 11.5.1
18:25:04.398: ---------------------------------
18:25:04.398:   Loaded Modules:
18:25:04.398:     win-wasapi.dll
18:25:04.398:     win-mf.dll
18:25:04.398:     win-dshow.dll
18:25:04.398:     win-decklink.dll
18:25:04.398:     win-capture.dll
18:25:04.398:     vlc-video.dll
18:25:04.398:     text-freetype2.dll
18:25:04.398:     StreamFX.dll
18:25:04.398:     rtmp-services.dll
18:25:04.398:     obs-x264.dll
18:25:04.398:     obs-vst.dll
18:25:04.398:     obs-transitions.dll
18:25:04.398:     obs-text.dll
18:25:04.398:     obs-qsv11.dll
18:25:04.398:     obs-outputs.dll
18:25:04.398:     obs-filters.dll
18:25:04.398:     obs-ffmpeg.dll
18:25:04.398:     obs-browser.dll
18:25:04.398:     image-source.dll
18:25:04.398:     frontend-tools.dll
18:25:04.398:     enc-amf.dll
18:25:04.398:     decklink-ouput-ui.dll
18:25:04.398:     coreaudio-encoder.dll
18:25:04.398: ---------------------------------
18:25:04.398: ==== Startup complete ===============================================
18:25:04.399: Service '' not found
18:25:04.415: All scene data cleared
18:25:04.415: ------------------------------------------------
18:25:04.528: WASAPI: Device 'Speakers (High Definition Audio Device)' [48000 Hz] initialized
18:25:04.528: [Loaded global audio device]: 'Desktop Audio'
18:25:04.632: WASAPI: Device 'Microphone (High Definition Audio Device)' [44100 Hz] initialized
18:25:04.632: [Loaded global audio device]: 'Mic/Aux'
18:25:04.633: Switched to scene 'Scene'
18:25:04.633: ------------------------------------------------
18:25:04.633: Loaded scenes:
18:25:04.633: - scene 'Scene':
18:25:04.633:     - source: 'Video Capture Device' (dshow_input)
18:25:04.633: ------------------------------------------------
18:25:04.646: adding 23 milliseconds of audio buffering, total audio buffering is now 23 milliseconds (source: Mic/Aux)
18:25:04.646:
18:25:04.759: ---------------------------------
18:25:04.759: [DShow Device: 'Video Capture Device'] settings updated:
18:25:04.759:     video device: HP HD Webcam
18:25:04.759:     video path: \\?\usb#vid_04f2&pid_b3ed&mi_00#7&18d13a7a&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global
18:25:04.759:     resolution: 640x480
18:25:04.759:     flip: 0
18:25:04.759:     fps: 30.00 (interval: 333333)
18:25:04.759:     format: YUY2
18:25:05.102: Switched to Preview/Program mode
18:25:05.102: ------------------------------------------------
18:25:11.206: [jim-nvenc: 'simple_h264_stream'] settings:
18:25:11.206:     rate_control: CBR
18:25:11.206:     bitrate:      2500
18:25:11.206:     cqp:          20
18:25:11.206:     keyint:       250
18:25:11.206:     preset:       hq
18:25:11.206:     profile:      high
18:25:11.206:     width:        1280
18:25:11.206:     height:       720
18:25:11.206:     2-pass:       false
18:25:11.206:     b-frames:     2
18:25:11.206:     lookahead:    false
18:25:11.206:     psycho_aq:    true
18:25:11.206:
18:25:11.249: ---------------------------------
18:25:11.250: [FFmpeg aac encoder: 'simple_aac'] bitrate: 160, channels: 2, channel_layout: 3
18:25:11.250:
18:25:11.401: ==== Recording Start ===============================================
18:25:11.401: [ffmpeg muxer: 'simple_file_output'] Writing file 'C:/Users/HP/Videos/2020-06-18 18-25-11.mkv'...
18:25:21.919: [ffmpeg muxer: 'simple_file_output'] Output of file 'C:/Users/HP/Videos/2020-06-18 18-25-11.mkv' stopped
18:25:21.919: Output 'simple_file_output': stopping
18:25:21.919: Output 'simple_file_output': Total frames output: 307
18:25:21.919: Output 'simple_file_output': Total drawn frames: 315
18:25:21.919: ==== Recording Stop ================================================
18:25:46.658: ==== Shutting down ==================================================
18:25:46.670: Switched to scene '(null)'
18:25:46.967: WASAPI: Device 'Speakers (High Definition Audio Device)' Terminated
18:25:46.971: WASAPI: Device 'Microphone (High Definition Audio Device)' Terminated
18:25:46.976: All scene data cleared
18:25:46.976: ------------------------------------------------

 

[R1CH]

Does the first recording actually appear in your output folder?

 

[Tangential]

Does the first recording actually appear in your output folder?

Yes. The first recording is properly created. I record in MKV, so I guess it is complete. All of the content I expect is in it.

 

[R1CH]

Could you create a .dmp file after recording then exiting OBS, when the process is still running in the background?

How to create a .DMP file for debugging

If OBS Studio is locking up (freezing) or crashing, you can create a Windows dump file which will help us analyze what is causing it. A dump file lets us see the entire state that the program was in when the file was created, which makes...

obsproject.com

 

[Tangential]

It is uploaded. I've sent you the link to the file

 

[Tangential]

Update: This turned out to be a problem with my NVIDIA drivers. Once I updated them, the problem was fixed. Thanks R1CH!