Bash functions for movie processing

bash_lib_video.sh

function ffmpeg_c112 { # create content for acer c112 pico beamer
        m=$(dirname "$1")
        n=$(basename "$1" | sed 's/mp4$//')    
        dir=/run/media/bgom/FCA7-F289/avi.c112
        ffmpeg -i "${m}/${n}mp4"  -c:v libx264 -profile:v baseline -c:a libmp3lame -b:a 128k -vf scale=720:406 -r 30 -pix_fmt yuv420p -ar 44100 "${dir}/${n}avi"
}


# Target: Odroid Go Ultra
scale=854:480

# Target: SD 
scale=1280:720


# Example: crop black bars away and scale for OGU
ffmpeg -ss 290 -i "http://mediapi.fritz.box/video/Kung%20Fu%20Panda%202.mkv" -vframes 10 -vf cropdetect -f null -
ffplay -vf crop=1920:816:0:134,scale=854:480 -i "http://mediapi.fritz.box/video/Kung%20Fu%20Panda%202.mkv"
ffmpeg -i "http://mediapi.fritz.box/video/Kung%20Fu%20Panda%202.mkv"  -c:v libx264 -profile:v baseline -c:a libmp3lame -b:a 128k -vf crop=1920:816:0:134,scale=854:480 -r 30 -pix_fmt yuv420p -ar 44100 "ogu_KungFuPanda 2.avi"

# Refs
https://superuser.com/questions/810471/remove-mp4-video-top-and-bottom-black-bars-using-ffmpeg