copra-dragndrop

#!/bin/bash

#Directories must be defined without trailing slash
output_dir="/Volumes/RAID/temp/tenerte"
ffopts="-vf \"scale=hd720, format=pix_fmts=rgb24, lut3d=file=/Users/elliott/scripts/BMD_LogC_709.dat, format=pix_fmts=yuv420p\" -vcodec libx264 -preset veryfast -tune film -crf 20 -level 31 -profile:v high -g 8 -maxrate 4M -bufsize 10M"
ffpreopts="-loglevel warning -stats"

echo "This script will encode source files for copra and save to:"
echo "$output_dir."
echo "Source files will not be modified."

#Check if any arguments were passed

if [ -z "$1" ]
then
    echo
    echo "Usage:    copra-dragndrop [OPTION]... SRC [SRC]..."
    echo " Options"
    echo "  -r  RATE    conform source frame rate to 23.98 timebase"
    else
        # check for command-line options
        while getopts ":r:" opt; do
        case $opt in
        r)  # set frame rate
            rate="$OPTARG""000/1001"
            echo "Conforming input $OPTARG fps to 24 with NTSC convention"
            ffpreopts="$ffpreopts -r $rate"     # force input frame rate
            ffopts="$ffopts -r 24000/1001"      # assume 23.98 timebase
            ;;
        \?)
            echo "Invalid option -$OPTARG"
            exit 1
            ;;
        :)
            echo "Option -$OPTARG requires an argument."
            exit 1
            ;;
        esac
    done
    shift $((OPTIND-1))     # remove opts, leaving only positional parameters

    mkdir -p $output_dir
    echo "Errors:" > /tmp/dailies-encode.log
    echo "Processing $# files..."
    for f # without arguments automatically uses positional parameters
    do
        filename=$(basename "$f")
        # get number of audio channels
        num_channels=`ffprobe -loglevel error -show_streams -select_streams a "$f" | grep channels | cut -d = -f 2`
        base="${filename%.*}"

        # check if output file already exists and log the error
        if [ -f "$output_dir/$base.mp4" ]; then
            echo "$output_dir/$base.mp4 already exists. Skipping."
            echo "$output_dir/$base.mp4 already exists. Skipping." >> /tmp/dailies-encode.log
            continue
        fi

        echo $ffopts
        # encode either 0, 1, or 2 audio channels
            if [ -z "$num_channels" ]; then
                echo "Encoding" $filename "with zero audio channels"
                ffmpeg $ffpreopts -i "$f" -an $ffopts "$output_dir/$base.mp4"
            elif [ "$num_channels" -le 2 ]; then
                echo "Encoding" $filename "with $num_channels audio channels"
                ffmpeg $ffpreopts -i "$f" -acodec libfdk_aac -b:a 128k $ffopts "$output_dir/$base.mp4"
            else
                echo "Encoding" $filename "with first two audio channels only"
                ffmpeg $ffpreopts -i "$f" -acodec libfdk_aac -b:a 128k -map_channel 0.1.0 -map_channel 0.1.1 $ffopts "$output_dir/$base.mp4"
            fi
    done
    echo
fi

# cat /tmp/dailies-encode.log