On Sun, Dec 10, 2017, at 10:22 AM, Guilherme Santos wrote: > Hello, I was wondering why this command couldn't work... I'm trying to > live > stream from my aws ubuntu to periscope. check this out: > > $ ffmpeg -threads 0 -y -v verbose -re -f x11grab -video_size 1024x768 -i > :1 > -c:v libx264 -preset ultrafast -crf 3 -c:a aac -b:a 64k -pix_fmt yuv420p > -r > 15 -g 30 -b:v 2500k -bufsize 512k -f flv > rtmp://or.pscp.tv:80/x/bb1hmhk85d71
Remove "-threads 0" input option. Remove "-re" input option. It should not be used with x11grab. From the documentation: "Should not be used with actual grab devices or live input streams (where it can cause packet loss)." Replace "-r 15" output option with "-framerate 15" input option. Verify that the video service accepts 15 fps (I'm not sure if it will or not). If not, use a more standard rate, such as 25, and adjust "-g" to be approximately double your frame rate. Remove "-crf 3". That's overkill for streaming and is mutually exclusive with "-b:v". Add "-maxrate" option. Change "-bufsize" to be 1-2x "-maxrate". Experiment with -b:v, -bufsize, -maxrate to see what works best for you. > ffmpeg version 2.4.3-1ubuntu1~trusty6 Copyright (c) 2000-2014 the FFmpeg > developers Ancient and unsupported. Please update. An easy solution is to use a static build from: http://johnvansickle.com/ffmpeg/ (I can't recall if x11grab is supported by these builds, but I'll assume it is.) _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
