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Problem H.264 Level and Livestreaming
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Joined: 12/8/2014(UTC)
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Location: Germany
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I have the following Problem. I have adjusted the H.264 Profile to "High" and Level to "4.2". Resolution, Framerate and Bandwidth is 1280x720 / 50p @5 Mbits. If i set "Hardwareaccleration" (Nvidia RTX 2060 Mobile) for Streaming, Vmix does not set the H.264 Level in Commandline. Then the Level is always 3.2. There is also no Entry for Level in FFMPEG-Commandline: Quote:C:\\Program Files (x86)\\vMix\\streaming\\ffmpeg.exe" -report -rtbufsize 128M -f dshow -i "video=vMix Video YV12:audio=vMix Audio" -codec:v nvenc -s:v 1280x720 -pix_fmt:v yuv420p -threads 8 -bufsize:v 2000k -g:v 100 -preset:v llhq -profile:v high -b:v 4800k -maxrate:v 4800k -minrate:v 4800k -codec:a libfaac -b:a 128k -strict -2 -rtmp_flashver "FMLE/3.0 (compatible; vMix/25.0.0.34)" -f flv rtmp://**** if i disable Hardwareaccleration, the Level will be set correctly: Quote:C:\\Program Files (x86)\\vMix1\\streaming\\ffmpeg.exe" -report -rtbufsize 128M -f dshow -i "video=vMix Video YV12:audio=vMix Audio" -codec:v libx264 -s:v 1280x720 -pix_fmt:v yuv420p -threads 8 -bufsize:v 2000k -g:v 100 -preset:v faster -profile:v high -level:v 4.2 -x264opts:v "keyint=100:min-keyint=100:scenecut=-1" -b:v 4800k -maxrate:v 4800k -minrate:v 4800k -codec:a libfaac -b:a 128k -strict -2 -rtmp_flashver "FMLE/3.0 (compatible; vMix/25.0.0.34)" -f flv rtmp://*** Ist this a Vmix Bug or a Limitation of NVENC?
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Just to double check, I see you have a 2060 mobile, which means you are probably on a laptop? or an all in one desktop? If so. I would recommend disabling optimus in the BIOS. Set your PC to use discrete graphics only. If you don't have that option in BIOS, make sure to open up the NVIDIA control panel and in the applications settings, make sure vMix is set to use the 2060 all the time and not on auto mode.
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Rank: Newbie
Groups: Registered
Joined: 12/8/2014(UTC)
Posts: 3
Location: Germany
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Originally Posted by: Paul Camino  Just to double check, I see you have a 2060 mobile, which means you are probably on a laptop? or an all in one desktop? If so. I would recommend disabling optimus in the BIOS. Set your PC to use discrete graphics only. If you don't have that option in BIOS, make sure to open up the NVIDIA control panel and in the applications settings, make sure vMix is set to use the 2060 all the time and not on auto mode. Hello Paul, yes it is a Laptop from Lenovo with AMD Ryzen 7 4800h, 16GB RAM and RTX2060 Mobile and 1TB Samsung 970 Evo+ Nvme SSD. There is no other Graphics-card in the System, the integrated AMD Graphics is not active by BIOS. Vmix is adviced to use always the RTX2060 Mobile. I use the Laptop with Vmix Basic HD Version only for Testing, not for Production. Settings for "Performance", see Screenshot below: https://www.sprade.tv/images/vmix.png
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