ffmpeg terminal difference with ffmpeg in python

[anonystick]

Hello! I need your help! I tried to understand but did not find a satisfactory answer. Please help me. When I use this command in the terminal, the stream image is the same as the prototype. But since I moved the command line to python, the stream quality is not as good as in the terminal. I tried to understand but did not find a satisfactory answer. Please help me.

terminal:

ffmpeg -f lavfi -i anullsrc -rtsp_transport tcp -i "rtsp:xxx.xxx" -tune zerolatency -vcodec libx264 -pix_fmt + -c:v copy -c:a aac -strict experimental -f flv "rtmp://xxxx"

in python.

command = ['ffmpeg',
    '-y',
    '-f', 'rawvideo',
    '-vcodec','rawvideo',
    '-pix_fmt', 'bgr24',
    '-s', '640x480',
    '-an',
    '-i', '-',
    '-c:v', 'libx264',
    '-pix_fmt', 'yuv420p',
    '-deinterlace',
    '-strict', 'experimental',
    '-r', '30',
    '-vb', '2000k',
    '-ab', '128k',
    '-ar', '22050',
    '-g', '60',
    '-preset', 'ultrafast',
    '-bufsize', '512k',
    '-f', 'flv',
    'rtmp://xxx']

Help me edit command in python the stream image is the same as the prototype. Thanks a lot!

[kkroening]

It would help if you could post the python code that generated that ffmpeg command.

[kkroening]

Er, I guess I'm confused as to what you're asking. The raw command-line and python snippet you posted look pretty different from one another.

I would recommend taking a closer look at the examples and see what you can piece together, and then ask more specific questions about what's confusing, rather than asking people to write your code for you.