diff options
| author | Sacha Chua <sacha@sachachua.com> | 2021-12-17 16:54:21 -0500 |
|---|---|---|
| committer | Sacha Chua <sacha@sachachua.com> | 2021-12-17 16:54:21 -0500 |
| commit | fc25c3b0764cbb1917f5989ee37a845a03099e59 (patch) | |
| tree | c60d42c811592a4cdb176598eaca2b1aa47a2937 /playbook.org | |
| parent | b9c2d54f43c5b03a63c5496d11e6dcbfcdfa804e (diff) | |
| download | emacsconf-wiki-fc25c3b0764cbb1917f5989ee37a845a03099e59.tar.xz emacsconf-wiki-fc25c3b0764cbb1917f5989ee37a845a03099e59.zip | |
update playbook with q=32
Diffstat (limited to 'playbook.org')
| -rw-r--r-- | playbook.org | 36 |
1 files changed, 27 insertions, 9 deletions
diff --git a/playbook.org b/playbook.org index db03fac4..d47dc9e1 100644 --- a/playbook.org +++ b/playbook.org @@ -18,18 +18,19 @@ | HOST | hosting, streaming, intros, reading, moving questions/answers around | zaeph | | ${protected} | [[/ssh:front:/var/www/media.emacsconf.org/2021/protected/]] | -| ${stream-status} | [[/ssh:front:/var/www/live.emacsconf.org/index.html]] | +| ${stream-status} | [[/ssh:front:/var/www/live.emacsconf.org/index.html]] | | ${upcoming} | upcoming.org shared over CRDT | | ${conf} | conf.org shared over CRDT | | ${playbook} | playbook.org shared over CRDT | | ${dump} | [[/ssh:live:/data/]] | | ${media} | [[/ssh:front:/var/www/media.emacsconf.org/2021/]] | -| ${live-main} | [[/ssh:front:/var/www/live.emacsconf.org/main.html]] | -| ${live-480p} | [[/ssh:front:/var/www/live.emacsconf.org/main-480p.html]] | -| ${live-index} | [[/ssh:front:/var/www/live.emacsconf.org/index.html]] | -| ${live-alt} | [[/ssh:front:/var/www/live.emacsconf.org/alt.html]] | -| ${profile} | [[/ssh:live:~/.profile]] | - +| ${live-main} | [[/ssh:front:/var/www/live.emacsconf.org/main.html]] | +| ${live-480p} | [[/ssh:front:/var/www/live.emacsconf.org/main-480p.html]] | +| ${live-index} | [[/ssh:front:/var/www/live.emacsconf.org/index.html]] | +| ${live-alt} | [[/ssh:front:/var/www/live.emacsconf.org/alt.html]] | +| ${profile} | [[/ssh:live:~/.profile]] | +| ${emacsconf-el} | https://git.emacsconf.org/emacsconf-el/ | +| | | * After the conference ** Update captions @@ -54,6 +55,9 @@ - Update Toobnix and Youtube captions with =conf-video-share=. - Update Toobnix and Youtube descriptions with chapters. - Update ${conf-year}/${captions}/${slug}.md in the wiki. To make this from scratch, use =M-x conf-prepare-transcript-directives= from the talk heading in the conference Org file. +** Update + + * Thursday or Friday before the conference :PROPERTIES: @@ -540,8 +544,22 @@ redirect the mpv output to the mpv sink. pacmd list-sink-inputs # notice the ID for the process you want to redirect pacmd move-sink-input 1 mpv #+end_src -** Check for video encoding issues +** Compress video + +Usage: =compress-video.sh original-file output-file=: -Sometimes the compression may get cut off. +#+begin_src sh :eval no :tangle compress-video.sh +Q=32 +ffmpeg -y -i "$1" -c:v libvpx-vp9 -b:v 0 -crf $Q -aq-mode 2 -an -tile-columns 0 -tile-rows 0 -frame-parallel 0 -cpu-used 8 -auto-alt-ref 1 -lag-in-frames 25 -g 240 -pass 1 -f webm -threads 8 /dev/null && +ffmpeg -y -i "$1" -c:v libvpx-vp9 -b:v 0 -crf $Q -c:a copy -tile-columns 2 -tile-rows 2 -frame-parallel 0 -cpu-used -5 -auto-alt-ref 1 -lag-in-frames 25 -pass 2 -g 240 -threads 8 "$2" +#+end_src + +We tried using q56 before, but it was a little too aggressive. Q=32 is the default and is probably a reasonable space vs. quality compromise. + +** Check for video encoding issues +Sometimes the compression may get cut off. You can use +=compile-media-verify-video-frames= from +https://github.com/sachac/compile-media to check that videos have +enough frames for their expected duration |