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I use the following command to display yuv video;

ffmpeg -v debug -re -probesize 32 -buffer_size 500000 -protocol_whitelist file,rtp,udp -strict -2 -i test.106.sdp -pix_fmt yuv420p -f sdl "CH1"

test.16.sdp ;

v=0
o=IN IP4 10.0.1.19 
s=raw1
c=IN IP4 225.0.1.106/127
t=0 0
m=video 4378 RTP/AVP 96
a=rtpmap:96 raw/90000
a=fmtp:96 sampling=YCbCr-4:2:2; width=720; height=576; depth=8; colorimetry=BT.6
01-5; framerate=25;

I want to adjust brightness and contrast while displaying. How can i do this, any idea?

Han

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  • Add eq filter and send commands to it. See stackoverflow.com/q/48635380
    – Gyan
    Commented Jan 20, 2020 at 13:06
  • hi Gyan, sendcmp syntax is like; START[-END] COMMANDS so it depends on time but in my scenario, operator may change the parameters any time.
    – Han
    Commented Jan 21, 2020 at 10:16
  • For immediate application, you would use -1 COMMAND
    – Gyan
    Commented Jan 21, 2020 at 10:30
  • If I press 'c' it suggests the syntax; Enter command: <target>|all <time>|-1 <command>[ <argument>] But the return value is ret=-38 for the syntx; all -1 brihtness 0 Is it mean that brightness is not supported for sendcmd?
    – Han
    Commented Jan 24, 2020 at 11:20
  • Not with the spelling brihtness
    – Gyan
    Commented Jan 24, 2020 at 11:41

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