I'm no expert but it sounds like you've reached the limitations of your CPU / GPU.
On Thu, Oct 10, 2019 at 1:07 AM Karan Singh <karanveersingh5...@gmail.com> wrote: > Didn't get your point , can you elaborate ? > I am able to run 6 live streams with before mentioned parameters but after > that frames start dropping and CPU/GPU usage reaches 80~100% . Memory and > storage bandwidth is not much used . > If you can help me in correct usage of parameters with live streaming , > that would be great . > > Regards > Karan Singh > > On Thu, Oct 10, 2019 at 11:47 AM Bo Zhou <bo.schwarzst...@gmail.com> > wrote: > > > Have you benchmark the ffmpeg during the runtime to check where is the > > bottleneck ? > > > > On Thu, Oct 10, 2019 at 10:11 AM Karan Singh < > karanveersingh5...@gmail.com > > > > > wrote: > > > > > Hi Team > > > > > > Any update on this? > > > > > > > > > i am struggling with live streaming of 4k videos with or without GPU. > > > > > > My question before describing my issue is what is number of 4k videos > > that > > > can transcoded and live streamed using below configuration . > > > > > > > > > 1 X R740xd dell system - configuration is 2 socket , 88 core > processors > > > with 256 GB of RAM- (ubuntu 18.04.02 OS ) > > > > > > + > > > > > > Tesla T4 GPU > > > > > > + > > > > > > Nginix & RTMP > > > > > > Transcoding and streaming all happening in one system , viewing of > stream > > > is in windows system with vlc player . > > > > > > > > > Below is the first command I was trying , the issue is that the video > > live > > > streaming runs perfectly with 6 simultaneous streams of 4k but when the > > 7th > > > stream starts , all goes bad and fps start dropping [ Its with CPU ] . > > The > > > only thing i notice is more CPU utilization and that could be reason of > > FPS > > > drop > > > > > > > > > ffmpeg -re -i Stranger09.mkv -c:v libx264 -b:v 50M -preset ultrafast > > -tune > > > zerolatency -b:a 128k -s 4096x2160 -bufsize 5M -x264opts keyint=500 -g > 60 > > > -pix_fmt yuv420p -f flv rtmp://194.167.137.11/live-test/Strange09_4k > > > > > > > > > Some guys on IRC channel recommended me to omit / edit below mentioned > > > parameters but still its not working > > > > > > Remove -tune zerolatency > > > > > > keyint=500 -g 60 , both are same so does use it together > > > > > > need to limit thread by adding -thread x > > > > > > > > > I tried using GPU to scale up the simultaneous streaming but it also > > going > > > bad after 6 streams , below is the command . Here I can see less CPU > > > utilization , like 20% , 80% is still free but GPU is 100% stressed . > > > > > > > > > fmpeg -hwaccel_device 1 -hwaccel cuvid -re -i Stranger02.mkv -c:v > > > h264_nvenc -preset fast -b:v 10M -bufsize 20M -x264opts keyint=500 > > -pix_fmt > > > yuv420p -f flv rtmp://194.167.137.11/live-test/Strange02_4k > > > > > > > > > I tried using GPU + CPU as 80% CPU is free after 100% GPU utilization > > but I > > > cannot run more than 7 simultaneous streams . > > > > > > > > > Please help me with correct usage of FFMPEG to scale up the 4k videos . > > > > > > My end goal is to achieve 1Gbps read/writes on storage media. Network > is > > > not in picture as transcoding and streaming all running on 1 server . > > > > > > On Wed, Oct 9, 2019 at 10:47 AM Karan Singh < > > karanveersingh5...@gmail.com> > > > wrote: > > > > > > > > The nginx server, how many workers are running? > > > > > > > > 1024 workers running > > > > > > > > On Tue, Oct 8, 2019 at 12:14 PM Ted Park <kumowoon1...@gmail.com> > > wrote: > > > > > > > >> > Is there any other issue that is causing problems in running more > > > >> number of > > > >> > simoultaneus streams ? > > > >> > > > >> The nginx server, how many workers are running? > > > >> _______________________________________________ > > > >> ffmpeg-user mailing list > > > >> ffmpeg-user@ffmpeg.org > > > >> https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > > >> > > > >> To unsubscribe, visit link above, or email > > > >> ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > > > > > > > > > > > _______________________________________________ > > > ffmpeg-user mailing list > > > ffmpeg-user@ffmpeg.org > > > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > > > > > To unsubscribe, visit link above, or email > > > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > > _______________________________________________ > > ffmpeg-user mailing list > > ffmpeg-user@ffmpeg.org > > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > > > To unsubscribe, visit link above, or email > > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".