Unknown decoder 'libx264'

user_14544727 0
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I have ffmpeg with libx264 enabled from BtbN for Windows 10. This is the command:

ffmpeg -f gdigrab -c:v libx264 -framerate 30 -i title="FiveM" -f flv rtmp://MYSITE.COM/stream/MYSECRETKEY

Unfortunately I get this output:

Unknown decoder 'libx264'
libx264 ffmpeg
1 Answers

Position of options is important:

ffmpeg [input options] -i input [output options] output

You are trying to apply -c:v libx264 to the input, but you should apply it to the output:

ffmpeg -f gdigrab -framerate 30 -i title="FiveM" -c:v libx264 -f flv rtmp://MYSITE.COM/stream/MYSECRETKEY

With some suggested options added:

ffmpeg -f gdigrab -framerate 30 -i title="FiveM" -c:v libx264 -vf format=yuv420p -g 60 -b:v 3000k -maxrate 3000k -bufsize 6000k -f flv rtmp://MYSITE.COM/stream/MYSECRETKEY

Some services require audio, so you can add silent audio if needed:

ffmpeg -f gdigrab -framerate 30 -i title="FiveM" -re -f lavfi -i anullsrc -c:v libx264 -c:a aac -vf format=yuv420p -g 60 -b:v 3000k -maxrate 3000k -bufsize 6000k -f flv rtmp://MYSITE.COM/stream/MYSECRETKEY
user_11090170
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