[FFmpeg-user] Ffplay Option pixel_format not found

[kgbook kgbook]

Hi all,
    I play RTSP stream with ffplay, then complain that 
> [swscaler @ 0x7f94a834e400] deprecated pixel format used, make sure you did set range correctly

   After that, I try with the command `ffplay rtsp://a:a@10.10.1.142/stream <rtsp://a:a@10.10.1.142/stream> -pix_fmt yuvj422p`, error log:
> Option -pix_fmt is deprecated, use -pixel_format.

   Following the tips, it’s still not ok.
> Option pixel_format not found.

  What should I do to solve the issue?