Useful Little Scripts

rename.sh

#!/bin/bash
set -e

echo "==== rename.sh =====
This script recurses through videos in a folder, and 
renames them into a format as follows:
test_[w]x[h]_[bitrate]_[duration].[extension]
e.g.
test_640x480_2973Kbps_34s.mov

This format is useful to parse the filename and get 
useful information about the file.

Note:
- mediainfo is needed. It is supported for many major OSes.
https://mediaarea.net/en/MediaInfo/Download

- For Windows, download and install the commandline (CLI) tool from
https://mediaarea.net/en/MediaInfo/Download/Windows

Tested on:
- Cygwin + Windows

"

PLATFORM=`uname`
if [ $PLATFORM == Linux  ]; then
    echo "OS: $PLATFORM"
    MEDIAINFO="mediainfo"
    command -v $MEDIAINFO >/dev/null 2>&1 || { 
        echo "$MEDIAINFO package not found. Proceeding to download. (you can abort the download if you wish)"
        sudo apt-get install mediainfo
    }
elif [[ "$PLATFORM" =~ "CYGWIN"* ]]; then
    echo "OS: $PLATFORM"
    MEDIAINFO="./MediaInfo/MediaInfo.exe"
    if [ ! -f $MEDIAINFO ]; then
        echo "MediaInfo tool not found at $MEDIAINFO! Download it from https://mediaarea.net/en/MediaInfo/Download"
                exit 1
    fi
else
    echo "unsupported OS `uname`" && exit 1
fi



if [ "$1" == "" ]; then
    echo "first argument should be folder containing video files"
    exit 1
fi

if ! [ "$2" == "mp4" ] && ! [ "$2" == "3gp" ] && ! [ "$2" == "mov" ]; then
    echo "warning: 2nd argument appears unsupported (3gp,mov,mp4)"
fi

FOLDER="$1"
SUPPORTED="$2"
echo " -- searching $FOLDER"


for i in `ls $FOLDER/*.$SUPPORTED`; do

    DIRNAME=$(dirname $i)
    
    DUR_RAW=""
    BR_RAW=""
    W_RAW=""
    H_RAW=""

    DUR_RAW=`$MEDIAINFO $i | grep -P "^Duration\s+" -m 1 | grep -oP "([0-9]+s)"`
    BR_RAW=`$MEDIAINFO $i | grep -P "Overall\sbit\srate" | grep -oP "[0-9\.\s]+\s[MK]bps"`
    W_RAW=`$MEDIAINFO $i | grep -P "Width" | grep -oP "([0-9\s]+)(?=\spixels)"`
    H_RAW=`$MEDIAINFO $i | grep "Height" | grep -oP "([0-9\s]+)(?=\spixels)"`

    if [ "$DUR_RAW" == "" ] || [ "$BR_RAW" == "" ] || [ "$W_RAW" == "" ] || [ "$H_RAW" == "" ]; then
        echo "couldn't parse values; skipping..."
        continue
    fi
    
    # remove whitespace
    DUR="$(echo -e "${DUR_RAW}" | tr -d '[[:space:]]')"
    BR="$(echo -e "${BR_RAW}" | tr -d '[[:space:]]')"
    W="$(echo -e "${W_RAW}" | tr -d '[[:space:]]')"
    H="$(echo -e "${H_RAW}" | tr -d '[[:space:]]')"

    echo -n "---- $i : "
    echo -n "$DUR, " 
    echo -n "$BR, "
    echo -n "$W, "
    echo "$H"

    # if MOV, rename to mov
    if [ "$SUPPORTED" == "MOV" ]; then
        TARGET_EXT="mov"
    else
        TARGET_EXT=$SUPPORTED
    fi
    
    RENAME="test_${W}x${H}_${BR}_${DUR}.$TARGET_EXT"

    if [ $DUR == "" ] || [ $BR == "" ] || [ $W == "" ] || [ $H == "" ]; then
        echo "couldn't parse values; skipping..."
        continue
    fi

    echo " rename to: $DIRNAME/$RENAME"
    mv -v $i $DIRNAME/$RENAME
done