Convert a video to HLS format with multiple resolutions

convert.sh

#!/usr/bin/env bash

# Convert a video to HLS format with multiple resolutions
# Usage: ./convert.sh input.mp4

# current version:
# https://gist.github.com/signalwerk/5eaddbd2825501e4ea61784efbf84a31

# for more complex converting see also 
# https://gist.github.com/mrbar42/ae111731906f958b396f30906004b3fa

set -e

# delete old files
rm -f master.m3u8
rm -rf v360p
rm -rf v480p
rm -rf v720p
rm -rf v1080p

echo "Converting $1"

# for mute videos 
ffmpeg -i "$1" \
  -map 0:v -map 0:a -map 0:v -map 0:a -map 0:v -map 0:a -map 0:v -map 0:a \
  -c:v libx264 -crf 22 \
  -c:a aac -b:a 128k \
  -filter:v:0 "scale=-2:360"  -maxrate:v:0 800k  -bufsize:v:0 1600k \
  -filter:v:1 "scale=-2:480"  -maxrate:v:1 1500k -bufsize:v:1 3000k \
  -filter:v:2 "scale=-2:720"  -maxrate:v:2 3000k -bufsize:v:2 6000k \
  -filter:v:3 "scale=-2:1080" -maxrate:v:3 5000k -bufsize:v:3 10000k \
  -var_stream_map "v:0,a:0,name:360p v:1,a:1,name:480p v:2,a:2,name:720p v:3,a:3,name:1080p" \
  -preset fast -hls_list_size 10 -threads 0 -f hls \
  -hls_playlist_type vod \
  -hls_time 1 -hls_flags independent_segments \
  -master_pl_name "master.m3u8" \
  -hls_segment_filename "v%v/segment_%04d.ts" \
  -y "v%v/stream.m3u8"