using ffmpeg instead of avconv

i have 2 bash scripts wich i am trying to use which require avconv when i run the scripts i get the error bash: avconv: command not found but since i dont know where to find avconv in either pacman or cower i was wandering if i could change the scripts to use ffmpeg instead here are my scripts stream.sh #!/bin/bash avconv -re -v error -fflags +genpts -i "$1" -c copy -f mpegts pipe:1 livestreamer.sh #!/bin/bash livestreamer -O "$1" best | avconv -re -v error -fflags +genpts -i pipe:0 -bsf h264_mp4toannexb -vcodec libx264 -acodec ac3 -f mpegts pipe:1