Dear all,
Want to make MPEG-DASH plus HLS plus Fallback mp4 encoding for adaptive bitrate
streaming from websites. For playback I use dash.js
All works fine and perfect but I do the encoding twice and with the exact same
output.
I didn’t find a way to combine it and do it in one go.
Especially when having set „veryslow“ this is really an issue. My input are
usually huge .mov files from FinalCutPro X or from Davinci Resolve
Would be thankful for a hint!
Thomas Hezel
zazu.berlin
Here is my bash-script:
#!/bin/bash
#HLS, Dash and fallback code from zazu.berlin 2020, Version 20200424
VIDEO_IN=/Users/thomas/Desktop/apache-official/TestB/test20.mov
VIDEO_OUT=master
HLS_TIME=4
FPS=25
GOP_SIZE=100
PRESET_P=veryslow
V_SIZE_1=960x540
V_SIZE_2=416x234
V_SIZE_3=640x360
V_SIZE_4=768x432
V_SIZE_5=1280x720
V_SIZE_6=1920x1080
mkdir Dash
# DASH
ffmpeg -i $VIDEO_IN -y \
-preset $PRESET_P -keyint_min $GOP_SIZE -g $GOP_SIZE -sc_threshold 0 -r
$FPS -c:v libx264 -pix_fmt yuv420p -c:a aac -b:a 128k -ac 1 -ar 44100 \
-map v:0 -s:0 $V_SIZE_1 -b:v:0 2M -maxrate:0 2.14M -bufsize:0 3.5M \
-map v:0 -s:1 $V_SIZE_2 -b:v:1 145k -maxrate:1 155k -bufsize:1 220k \
-map v:0 -s:2 $V_SIZE_3 -b:v:2 365k -maxrate:2 390k -bufsize:2 640k \
-map v:0 -s:3 $V_SIZE_4 -b:v:3 730k -maxrate:3 781k -bufsize:3 1278k \
-map v:0 -s:4 $V_SIZE_4 -b:v:4 1.1M -maxrate:4 1.17M -bufsize:4 2M \
-map v:0 -s:5 $V_SIZE_5 -b:v:5 3M -maxrate:5 3.21M -bufsize:5 5.5M \
-map v:0 -s:6 $V_SIZE_5 -b:v:6 4.5M -maxrate:6 4.8M -bufsize:6 8M \
-map v:0 -s:7 $V_SIZE_6 -b:v:7 6M -maxrate:7 6.42M -bufsize:7 11M \
-map v:0 -s:8 $V_SIZE_6 -b:v:8 7.8M -maxrate:8 8.3M -bufsize:8 14M \
-map 0:a \
-init_seg_name init\$RepresentationID\$.\$ext\$ -media_seg_name
chunk\$RepresentationID\$-\$Number%05d\$.\$ext\$ \
-use_template 1 -use_timeline 1 -seg_duration 4 \
-adaptation_sets "id=0,streams=v id=1,streams=a" \
-f dash Dash/dash.mpd
# Fallback video file
ffmpeg -i $VIDEO_IN -y -c:v libx264 -pix_fmt yuv420p -r $FPS -s $V_SIZE_1 -b:v
1.8M -c:a aac -b:a 128k -ac 1 -ar 44100 fallback-video-$V_SIZE_1.mp4
mkdir HLS
cd HLS
# HLS
ffmpeg -i $VIDEO_IN -y \
-preset $PRESET_P -keyint_min $GOP_SIZE -g $GOP_SIZE -sc_threshold 0 -r
$FPS -c:v libx264 -pix_fmt yuv420p \
-map v:0 -s:0 $V_SIZE_1 -b:v:0 2M -maxrate:0 2.14M -bufsize:0 3.5M \
-map v:0 -s:1 $V_SIZE_2 -b:v:1 145k -maxrate:1 155k -bufsize:1 220k \
-map v:0 -s:2 $V_SIZE_3 -b:v:2 365k -maxrate:2 390k -bufsize:2 640k \
-map v:0 -s:3 $V_SIZE_4 -b:v:3 730k -maxrate:3 781k -bufsize:3 1278k \
-map v:0 -s:4 $V_SIZE_4 -b:v:4 1.1M -maxrate:4 1.17M -bufsize:4 2M \
-map v:0 -s:5 $V_SIZE_5 -b:v:5 3M -maxrate:5 3.21M -bufsize:5 5.5M \
-map v:0 -s:6 $V_SIZE_5 -b:v:6 4.5M -maxrate:6 4.8M -bufsize:6 8M \
-map v:0 -s:7 $V_SIZE_6 -b:v:7 6M -maxrate:7 6.42M -bufsize:7 11M \
-map v:0 -s:8 $V_SIZE_6 -b:v:8 7.8M -maxrate:8 8.3M -bufsize:8 14M \
-map a:0 -map a:0 -map a:0 -map a:0 -map a:0 -map a:0 -map a:0 -map a:0
-map a:0 -c:a aac -b:a 128k -ac 1 -ar 44100\
-f hls -hls_time $HLS_TIME -hls_playlist_type vod -hls_flags
independent_segments \
-master_pl_name $VIDEO_OUT.m3u8 \
-hls_segment_filename stream_%v/s%06d.ts \
-strftime_mkdir 1 \
-var_stream_map "v:0,a:0 v:1,a:1 v:2,a:2 v:3,a:3 v:4,a:4 v:5,a:5 v:6,a:6
v:7,a:7 v:8,a:8" stream_%v.m3u8
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