Screen Capture in ffmpeg with jerky movement I'm using ffmpeg to capture a portion of my screen, save it as a movie file, and stream it to a Youtube live event.
The result is a jerky movement. The log has some issues I'm not able to understand and solve. I did a lot of different try, but with no result.

This is the actual Command line I use:

"C:\\mbiWebTV\\programs\\ffmpeg\\bin_x86\\ffmpeg.exe" 
-thread_queue_size 512 -report -re -rtbufsize 2000M -f dshow 
-i "audio=Missaggio stereo (Realtek High Definition Audio)" 
-f dshow 
-i "video=screen-capture-recorder" -filter:v "crop=713:379:018:043" 
-s 848x480 -video_size 848x480 -vcodec libx264 -preset ultrafast 
-maxrate 6000 -bufsize 2000M -pix_fmt yuv420p -g 60 -acodec libmp3lame 
-b:a 128k -ac 2 -ar 44100 
-f flv rtmp://a.rtmp.youtube.com/live2/xxxx-xyyv-0rrm-f9g2 
-filter:v "crop=713:379:018:043" 
"c:\\mbiWebTV\\Capture\\Capture_20170225_165829.mkv"


I could send the complete log file. 
This is the error messages that frequently occurs:


  [dshow @ 049a4240] real-time buffer [screen-capture-recorder] [video
  input] too full or near too full (545% of size: 3041280 [rtbufsize
  parameter])! frame dropped!
The rtbufsize is only affecting the audio.

Try

ffmpeg.exe
-thread_queue_size 512 -report -rtbufsize 100M -f dshow -i "audio=Missaggio stereo (Realtek High Definition Audio)"
-rtbufsize 1000M -thread_queue_size 512 -video_size 848x480 -f dshow -i "video=screen-capture-recorder"
-vf "crop=713:379:18:43,scale=848:480,setsar=1"
-vcodec libx264 -preset ultrafast -maxrate 6M -bufsize 12M -pix_fmt yuv420p -g 60
-acodec libmp3lame -b:a 128k -ac 2 -ar 44100
-f flv rtmp://a.rtmp.youtube.com/live2/xxxx-xyyv-0rrm-f9g2
-filter:v "crop=713:379:18:43" "c:\mbiWebTV\Capture\Capture_20170225_165829.mkv"