Convert a video file to a MKV playable directly on a Chromecast. Usage: `./convert-to-chromecast /path/to/video.file`

convert-to-chromecast

#!/bin/bash

if ffmpeg -i "$1" 2>&1 | grep Video: | grep h264 #check video codec
then
    vcodec=copy
else
    vcodec=libx264
fi

if ffmpeg -i "$1" 2>&1 | grep Video: | grep "High 10"	#10 bit H.264 can't be played by Hardware.
then
    vcodec=libx264
fi

if ffmpeg -i "$1" 2>&1 | grep Audio: | grep aac ||
   ffmpeg -i "$1" 2>&1 | grep Audio: | grep mp3 ||
   ffmpeg -i "$1" 2>&1 | grep Audio: | grep vorbis #check audio codec
then
    acodec=copy
else
    acodec=aac
fi

echo "=================="
echo "vcodec: $vcodec"
echo "acodec: $acodec"
echo "=================="

if [ "$acodec" == "copy" ] && [ "$vcodec" == "copy" ] && ( [[ $1 == *.mkv ]] || [[ $1 == *.mp4 ]] )
then
   echo "no conversion needed"
   exit 2
fi

if [ "$vcodec" != "copy" ] && [ "$2" == "--disable-video-conversion" ]
then
   echo "video conversion is necessary, but it was disabled"
   exit 3
fi

src=$1
if [[ $1 == *.mkv ]]
then
   echo "converting MKV to another MKV, so first renaming the original MKV"
   mv "$1" "${1}.orig"
   src=${1}.orig
fi

echo "let's start converting!"

ffmpeg -i "$src" -c:a $acodec -c:v $vcodec -q:a 0 -q:v 0 -strict -2 "${1%.*}.mkv"