Conversion inforamtions

list decoders/formats

ffmpeg -codecs ffmpeg -formats

Basic conversions

Convert sounds

ffmpeg -i filename.mp4 filename.mp3

ffmpeg -i filename.mp4 -b:a 192K -vn filename.mp3

Capture/Stream desktop

Capture x11 desktop:

ffmpeg -video_size 1024x768 -framerate 25 -f x11grab -i :0.0+100,200 output.mp4

Capture x11 desktop and store in x264

ffmpeg -video_size 1920x1080 -framerate 25 -f x11grab -i :0.0+0,0 -f h264 out.h2

Stream desktop over tcp using h264 and receiving with mplayer (it has high delay)

ffmpeg -video_size 1920x1080 -framerate 25 -f x11grab -i :0.0+0,0 -f h264 -preset veryfast - | nc -l -p 6000 nc 127.0.0.1 6000 | mplayer -cache 512 -

Stream desktop over tcp: more responsive method

ffmpeg -video_size 1920x1080 -framerate 25 -f x11grab -i :0.0+0,0 -preset ultrafast -vcodec libx264 -tune zerolatency -b 900k -f mpegts - | nc -l -p 6000 nc 127.0.0.1 6000 | mplayer -

Same on udp

ffmpeg -video_size 1920x1080 -framerate 25 -f x11grab -i :0.0+0,0 -preset ultrafast -vcodec libx264 -tune zerolatency -b 900k -f mpegts - | socat - UDP-DATAGRAM:127.0.0.1:24000,broadcast nc -u -l -p 24000 | mplayer -

Stream desktop, directly on tcp

ffmpeg -video_size 1920x1080 -framerate 25 -f x11grab -i :0.0+0,0 -preset ultrafast -vcodec libx264 -tune zerolatency -b 900k -f mpegts tcp://127.0.0.1:6000\?listen ffplay tcp://127.0.0.1:6000

TODO Responsive stream using video camera