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Mini Shell
Mini Shell
#!/bin/bash
# THIS SCRIPT CONVERTS EVERY MP4 (IN THE CURRENT FOLDER AND SUBFOLDER) TO A MULTI-BITRATE VIDEO IN MP4-DASH
# For each file "videoname.mp4" it creates a folder "dash_videoname" containing a dash manifest file "stream.mpd" and subfolders containing video segments.
# Explanation:
# https://rybakov.com/blog/
# Validation tool:
# http://dashif.org/conformance.html
# MDN reference:
# https://developer.mozilla.org/en-US/Apps/Fundamentals/Audio_and_video_delivery/Setting_up_adaptive_streaming_media_sources
# Add the following mime-types (uncommented) to .htaccess:
# AddType video/mp4 m4s
# AddType application/dash+xml mpd
# Use type="application/dash+xml"
# in html when using mp4 as fallback:
# <video data-dashjs-player loop="true" >
# <source src="/walking/walking.mpd" type="application/dash+xml">
# <source src="/walking/walking.mp4" type="video/mp4">
# </video>
# DASH.js
# https://github.com/Dash-Industry-Forum/dash.js
set -x
MYDIR=$(dirname $(readlink -f ${BASH_SOURCE[0]}))
SAVEDIR=$(pwd)
# Check programs
if [ -z "$(which ffmpeg)" ]; then
echo "Error: ffmpeg is not installed"
exit 1
fi
if [ -z "$(which MP4Box)" ]; then
echo "Error: MP4Box is not installed"
exit 1
fi
#cd "$MYDIR"
#find ./ -maxdepth 1 -type f \( -name "*.mov" -or -name "*.mp4" \) | {
#for f in $TARGET_FILES
#while read f;
#do
fe=$(basename "$1") # fullname of the file
f="${fe%.*}" # name without extension
if [ ! -d "${f}" ]; then #if directory does not exist, convert
echo "Converting \"$f\" to multi-bitrate video in MPEG-DASH"
mkdir "${f}"
ffmpeg -y -i "${fe}" -c:a aac -b:a 96k -vn "${f}_audio.m4a"
ffmpeg -y -i "${fe}" -preset slow -tune film -r 25 -vsync -1 -write_tmcd 0 -an -c:v libx264 -x264opts 'keyint=25:min-keyint=25:no-scenecut' -b:v 5000k -maxrate 7500k -bufsize 12000k -pix_fmt yuv420p -f mp4 "${f}_5000.mp4"
ffmpeg -y -i "${fe}" -preset slow -tune film -r 25 -vsync -1 -write_tmcd 0 -an -c:v libx264 -x264opts 'keyint=25:min-keyint=25:no-scenecut' -b:v 3000k -maxrate 4500k -bufsize 6000k -pix_fmt yuv420p -vf "scale=-2:1080" -f mp4 "${f}_3000.mp4"
ffmpeg -y -i "${fe}" -preset slow -tune film -r 25 -vsync -1 -write_tmcd 0 -an -c:v libx264 -x264opts 'keyint=25:min-keyint=25:no-scenecut' -b:v 1200k -maxrate 1800k -bufsize 2400k -pix_fmt yuv420p -vf "scale=-2:720" -f mp4 "${f}_1200.mp4"
ffmpeg -y -i "${fe}" -preset slow -tune film -r 25 -vsync -1 -write_tmcd 0 -an -c:v libx264 -x264opts 'keyint=25:min-keyint=25:no-scenecut' -b:v 400k -maxrate 600k -bufsize 1000k -pix_fmt yuv420p -vf "scale=-2:540" -f mp4 "${f}_400.mp4"
# static file for ios and old browsers
ffmpeg -y -i "${fe}" -preset slow -tune film -r 25 -vsync -1 -write_tmcd 0 -c:a aac -b:a 160k -c:v libx264 -b:v 2000k -maxrate 3000k -bufsize 4000k -pix_fmt yuv420p -f mp4 "${f}/${f}.mp4"
rm -f ffmpeg*log*
# if audio stream does not exist, ignore it
if [ -e "${f}_audio.m4a" ]; then
MP4Box -dash 2000 -rap -frag-rap -bs-switching no -profile "onDemand" "${f}_5000.mp4" "${f}_3000.mp4" "${f}_1200.mp4" "${f}_400.mp4" "${f}_audio.m4a" -out "${f}/${f}.mpd"
rm "${f}_5000.mp4" "${f}_3000.mp4" "${f}_1200.mp4" "${f}_400.mp4" "${f}_audio.m4a"
else
MP4Box -dash-strict 2000 -rap -frag-rap -bs-switching no -profile "onDemand" "${f}_5000.mp4" "${f}_3000.mp4" "${f}_1200.mp4" "${f}_400.mp4" -out "${f}/${f}.mpd"
rm "${f}_5000.mp4" "${f}_3000.mp4" "${f}_1200.mp4" "${f}_400.mp4"
fi
# create a jpg for poster. Use imagemagick or just save the frame directly from ffmpeg is you don't have mozcjpeg installed.
#ffmpeg -i "${fe}" -ss 00:00:00 -vframes 1 -qscale:v 10 -n -f image2 - | mozcjpeg -progressive -quality 2,35 -quant-table 2 -outfile "${f}"/"${f}".jpg
ffmpeg -i "${fe}" -ss 00:00:00 -vframes 1 -qscale:v 10 -n -f image2 "${f}"/"${f}".jpg
convert "${f}"/"${f}".jpg -resize 256x256 "${f}"/"${f}_thumb".jpg
fi
#done
#}
cd "$SAVEDIR"
Zerion Mini Shell 1.0