ffmpeg-transcoder.sh

#!/bin/bash

#transcode your video and outputs is video_1080p.mp4,video_720p.mp4,video_480p.mp4

output_directory=$1
extention=$2

echo $output_directory

main_video="$output_directory/video.$2"
out_1080="$output_directory/video_1080p.mp4"
out_720="$output_directory/video_720p.mp4"
out_480="$output_directory/video_480p.mp4"

ffmpeg -i $main_video \
    -s 1920x1080 -c:v libx264 -b:v 2000k -bufsize 2000k -maxrate 2100k -bf 2 -g 90 -sc_threshold 0 -c:a aac -strict experimental -b:a 128k -ar 48000 $out_1080 \
    -s 1280x720  -c:v libx264 -b:v 1200k -bufsize 1200k -maxrate 1400k -bf 2 -g 90 -sc_threshold 0 -c:a aac -strict experimental -b:a 96k -ar 44100 $out_720 \
    -s 854x480   -c:v libx264 -b:v 400k  -bufsize 400k  -maxrate 500k  -bf 2 -g 90 -sc_threshold 0 -c:a aac -strict experimental -b:a 64k -ar 44100 $out_480