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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -1 +1,5 @@ # ABR Background Videos An ffmpeg command that produces abr video assets suitable for silent web background video. I'm using [shaka-player](https://shaka-player-demo.appspot.com/docs/api/tutorial-basic-usage.html) to stream the resulting files. I went through several iterations of this, and other variations could work as well. I believe this produces all the assets needed for cross-browser compatibility. Safari needs mp4, and iOS Safari (at least the version my old MacBook can simulate) will only play HLS, even with shaka-player. -
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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1 @@ An ffmpeg command that produces abr video assets suitable for silent web background video. This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,42 @@ #!/bin/bash # uses ffmpeg version 4.4.2 source=$1 outdir=$2 ffmpeg -re -i $source -an -dash 1 -tile-columns 4 -frame-parallel 1 \ -map 0 -c:v:0 libvpx-vp9 -filter:v:0 scale=-2:360 -b:v:0 500k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:1 libvpx-vp9 -filter:v:1 scale=-2:360 -b:v:1 800k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:2 libvpx-vp9 -filter:v:2 scale=-2:360 -b:v:2 1400k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:3 libvpx-vp9 -filter:v:3 scale=-2:480 -b:v:3 750k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:4 libvpx-vp9 -filter:v:4 scale=-2:480 -b:v:4 1200k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:5 libvpx-vp9 -filter:v:5 scale=-2:480 -b:v:5 2100k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:6 libvpx-vp9 -filter:v:6 scale=-2:720 -b:v:6 1500k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:7 libvpx-vp9 -filter:v:7 scale=-2:720 -b:v:7 2400k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:8 libvpx-vp9 -filter:v:8 scale=-2:720 -b:v:8 4200k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:9 libvpx-vp9 -filter:v:9 scale=-2:1080 -b:v:9 3000k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:10 libvpx-vp9 -filter:v:10 scale=-2:1080 -b:v:10 4800k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:11 libvpx-vp9 -filter:v:11 scale=-2:1080 -b:v:11 8400k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:12 libx264 -filter:v:12 scale=-2:360 -b:v:12 500k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:13 libx264 -filter:v:13 scale=-2:360 -b:v:13 800k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:14 libx264 -filter:v:14 scale=-2:360 -b:v:14 1400k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:15 libx264 -filter:v:15 scale=-2:480 -b:v:15 750k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:16 libx264 -filter:v:16 scale=-2:480 -b:v:16 1200k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:17 libx264 -filter:v:17 scale=-2:480 -b:v:17 2100k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:18 libx264 -filter:v:18 scale=-2:720 -b:v:18 1500k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:19 libx264 -filter:v:19 scale=-2:720 -b:v:19 2400k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:20 libx264 -filter:v:20 scale=-2:720 -b:v:20 4200k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:21 libx264 -filter:v:21 scale=-2:1080 -b:v:21 3000k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:22 libx264 -filter:v:22 scale=-2:1080 -b:v:22 4800k -keyint_min 60 -g 60 -sc_threshold 0 \ -map 0 -c:v:23 libx264 -filter:v:23 scale=-2:1080 -b:v:23 8400k -keyint_min 60 -g 60 -sc_threshold 0 \ -f dash \ -single_file 1 \ -use_template 1 \ -use_timeline 1 \ -seg_duration 2 \ -adaptation_sets "\ id=0,streams=0,1,2,3,4,5,6,7,8,9,10,11 \ id=1,streams=12,13,14,15,16,17,18,19,20,21,22,23" \ -single_file_name '$RepresentationID$-$Bandwidth$.$ext$' \ -hls_playlist 1 \ "$outdir/manifest.mpd"