Question / Help Starting the output failed. Please check the log for details. Please help!!

Cithara

New Member
Hi, I have been using OBS to record for about a year now, and I always used the NVENC H.264 encoder. One day, it just stopped working. I was confused, so I updated to the newer version, and it still didn't work. I went and googled, I tried everything. I uninstalled it then reinstalled it, changed some of the settings around, and I
updated my drivers multiple times. I later went back to OBS 22.0.2 because it is my favorite version. I then got the AMD encoders and they still don't work that well. (The H265/ Hevc and H264/ AVC.) While they work, it still is very slow. I can't use my CPU to record because it lags my software like crazy. Please help, I am very desperate.
Graphics Card: AMD Radeon RX 560
Log:

15:48:14.267: CPU Name: AMD FX(tm)-6300 Six-Core Processor
15:48:14.267: CPU Speed: 3516MHz
15:48:14.267: Physical Cores: 3, Logical Cores: 6
15:48:14.267: Physical Memory: 8174MB Total, 4189MB Free
15:48:14.267: Windows Version: 10.0 Build 17134 (revision: 472; 64-bit)
15:48:14.267: Running as administrator: false
15:48:14.267: Aero is Enabled (Aero is always on for windows 8 and above)
15:48:14.267: Windows 10 Gaming Features:
15:48:14.267: Game Bar: On
15:48:14.267: Game DVR: On
15:48:14.267: Game DVR Background Recording: Off
15:48:14.269: Sec. Software Status:
15:48:14.296: Windows Defender Antivirus: enabled (AV)
15:48:14.296: Windows Firewall: enabled (FW)
15:48:14.296: Windows Defender Antivirus: enabled (ASW)
15:48:14.297: Portable mode: false
15:48:14.321: OBS 21.0.1 (64bit, windows)
15:48:14.321: ---------------------------------
15:48:14.333: ---------------------------------
15:48:14.333: audio settings reset:
15:48:14.333: samples per sec: 48000
15:48:14.333: speakers: 2
15:48:14.335: ---------------------------------
15:48:14.335: Initializing D3D11...
15:48:14.335: Available Video Adapters:
15:48:14.336: Adapter 1: AMD Radeon(TM) RX 560 Series
15:48:14.336: Dedicated VRAM: 2126741504
15:48:14.336: Shared VRAM: 4285589504
15:48:14.336: output 1: pos={0, 0}, size={1920, 1080}, attached=true
15:48:14.336: output 2: pos={1920, 0}, size={1920, 1080}, attached=true
15:48:14.339: Loading up D3D11 on adapter AMD Radeon(TM) RX 560 Series (0)
15:48:14.382: D3D11 loaded successfully, feature level used: 45056
15:48:15.545: ---------------------------------
15:48:15.545: video settings reset:
15:48:15.545: base resolution: 1920x1080
15:48:15.545: output resolution: 1280x720
15:48:15.545: downscale filter: Bicubic
15:48:15.545: fps: 60000/1001
15:48:15.545: format: NV12
15:48:15.546: Audio monitoring device:
15:48:15.546: name: Default
15:48:15.546: id: default
15:48:15.546: ---------------------------------
15:48:15.548: Required module function 'obs_module_load' in module '../../obs-plugins/64bit/chrome_elf.dll' not found, loading of module failed
15:48:15.768: [CoreAudio encoder]: Adding CoreAudio AAC encoder
15:48:17.693: [AMF] Version 2.3.1 loaded (Compiled: 1.4.4.0, Runtime: 1.4.12.0, Library: 1;4;12;0;18.50.21.01;201902121854;CL#1743043).
15:48:18.022: Required module function 'obs_module_load' in module '../../obs-plugins/64bit/libcef.dll' not found, loading of module failed
15:48:18.023: Required module function 'obs_module_load' in module '../../obs-plugins/64bit/libEGL.dll' not found, loading of module failed
15:48:18.024: Required module function 'obs_module_load' in module '../../obs-plugins/64bit/libGLESv2.dll' not found, loading of module failed
15:48:18.025: Failed to load 'en-US' text for module: 'obs-browser.dll'
15:48:18.025: [browser_source: 'Version: 1.29.0']
15:48:18.036: NVENC supported
15:48:20.092: VLC found, VLC video source enabled
15:48:20.297: No blackmagic support
15:48:21.018: ---------------------------------
15:48:21.018: Loaded Modules:
15:48:21.018: win-wasapi.dll
15:48:21.018: win-mf.dll
15:48:21.018: win-dshow.dll
15:48:21.018: win-decklink.dll
15:48:21.018: win-capture.dll
15:48:21.018: vlc-video.dll
15:48:21.018: text-freetype2.dll
15:48:21.018: rtmp-services.dll
15:48:21.018: obs-x264.dll
15:48:21.018: obs-vst.dll
15:48:21.018: obs-transitions.dll
15:48:21.018: obs-text.dll
15:48:21.018: obs-qsv11.dll
15:48:21.018: obs-outputs.dll
15:48:21.018: obs-filters.dll
15:48:21.018: obs-ffmpeg.dll
15:48:21.018: obs-browser.dll
15:48:21.018: image-source.dll
15:48:21.018: frontend-tools.dll
15:48:21.018: enc-amf.dll
15:48:21.018: coreaudio-encoder.dll
15:48:21.018: ---------------------------------
15:48:21.018: ==== Startup complete ===============================================
15:48:21.092: Service '' not found
15:48:21.106: All scene data cleared
15:48:21.106: ------------------------------------------------
15:48:21.214: WASAPI: Device 'Headphones (Realtek High Definition Audio)' initialized
15:48:21.550: WASAPI: Device 'Microphone (Yeti Stereo Microphone)' initialized
15:48:21.573: adding 42 milliseconds of audio buffering, total audio buffering is now 42 milliseconds
15:48:21.733: Switched to scene 'Scene'
15:48:21.733: ------------------------------------------------
15:48:21.733: Loaded scenes:
15:48:21.733: - scene 'Scene':
15:48:21.733: - source: 'webcameroo' (dshow_input)
15:48:21.733: - source: 'Display Capture' (monitor_capture)
15:48:21.733: ------------------------------------------------
15:48:32.690: ---------------------------------
15:48:32.690: [DShow Device: 'webcameroo'] settings updated:
15:48:32.690: video device: Logitech HD Pro Webcam C920
15:48:32.690: video path: \\?\usb#vid_046d&pid_082d&mi_00#7&13c900d&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\{bbefb6c7-2fc4-4139-bb8b-a58bba724083}
15:48:32.690: resolution: 1280x720
15:48:32.690: fps: 30.00 (interval: 333333)
15:48:32.690: format: I420
15:48:52.191: Settings changed (outputs)
15:48:52.191: ------------------------------------------------
15:48:54.453: ---------------------------------
15:48:54.540: [NVENC encoder: 'recording_h264'] settings:
15:48:54.540: rate_control: CBR
15:48:54.540: bitrate: 2500
15:48:54.540: cqp: 0
15:48:54.540: keyint: 250
15:48:54.540: preset: default
15:48:54.540: profile: main
15:48:54.540: level: auto
15:48:54.540: width: 1280
15:48:54.540: height: 720
15:48:54.540: 2-pass: true
15:48:54.540: b-frames: 2
15:48:54.540: GPU: 0
15:48:54.540:
15:48:55.223: error: Cannot init CUDA
15:48:55.223: [NVENC encoder: 'recording_h264'] Failed to open NVENC codec: Unknown error occurred
15:50:05.361: ---------------------------------
15:50:05.361: [NVENC encoder: 'recording_h264'] settings:
15:50:05.361: rate_control: CBR
15:50:05.361: bitrate: 2500
15:50:05.361: cqp: 0
15:50:05.361: keyint: 250
15:50:05.361: preset: default
15:50:05.361: profile: main
15:50:05.361: level: auto
15:50:05.361: width: 1280
15:50:05.361: height: 720
15:50:05.361: 2-pass: true
15:50:05.361: b-frames: 2
15:50:05.361: GPU: 0
15:50:05.361:
15:50:05.413: error: Cannot init CUDA
15:50:05.414: [NVENC encoder: 'recording_h264'] Failed to open NVENC codec: Unknown error occurred
15:56:20.439: ---------------------------------
15:56:20.439: [NVENC encoder: 'recording_h264'] settings:
15:56:20.439: rate_control: CBR
15:56:20.439: bitrate: 2500
15:56:20.439: cqp: 0
15:56:20.439: keyint: 250
15:56:20.439: preset: default
15:56:20.439: profile: main
15:56:20.439: level: auto
15:56:20.439: width: 1280
15:56:20.439: height: 720
15:56:20.439: 2-pass: true
15:56:20.439: b-frames: 2
15:56:20.439: GPU: 0
15:56:20.439:
15:56:21.129: error: Cannot init CUDA
15:56:21.130: [NVENC encoder: 'recording_h264'] Failed to open NVENC codec: Unknown error occurred
15:59:06.227: ---------------------------------
15:59:06.227: [NVENC encoder: 'recording_h264'] settings:
15:59:06.227: rate_control: CBR
15:59:06.227: bitrate: 2500
15:59:06.227: cqp: 0
15:59:06.227: keyint: 250
15:59:06.227: preset: default
15:59:06.227: profile: main
15:59:06.227: level: auto
15:59:06.227: width: 1280
15:59:06.227: height: 720
15:59:06.227: 2-pass: true
15:59:06.227: b-frames: 2
15:59:06.227: GPU: 0
15:59:06.227:
15:59:06.242: error: Cannot init CUDA
15:59:06.242: [NVENC encoder: 'recording_h264'] Failed to open NVENC codec: Unknown error occurred
 
Last edited:

koala

Active Member
You did configure OBS to use nvenc as encoder, but you don't have a Nvidia GPU built in your PC, so you don't have Nvenc available. Nvenc is a hardware circuit in Nvidia GPUs. No Nvidia GPU means no Nvenc. Change to a different encoder.
 

Cithara

New Member
You did configure OBS to use nvenc as encoder, but you don't have a Nvidia GPU built in your PC, so you don't have Nvenc available. Nvenc is a hardware circuit in Nvidia GPUs. No Nvidia GPU means no Nvenc. Change to a different encoder.
Ok, thank you.
 

Cithara

New Member
You did configure OBS to use nvenc as encoder, but you don't have a Nvidia GPU built in your PC, so you don't have Nvenc available. Nvenc is a hardware circuit in Nvidia GPUs. No Nvidia GPU means no Nvenc. Change to a different encoder.
Where could I get an encoder to use my GPU for AMD?
 

koala

Active Member
Update OBS (you have a rather old one installed) and your graphics driver to the latest version. Then look into the output settings for steaming and recording and see what encoders are available in the "Encoder" drop down boxes. OBS will recognize available and supported encoders and offer them in these drop down boxes.
 
Top