diff options
Diffstat (limited to '2022/organizers-notebook')
| -rw-r--r-- | 2022/organizers-notebook/index.org | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/2022/organizers-notebook/index.org b/2022/organizers-notebook/index.org index b7a53b9f..74d72100 100644 --- a/2022/organizers-notebook/index.org +++ b/2022/organizers-notebook/index.org @@ -929,7 +929,51 @@ ffmpeg -y -i "$1" -c:v libvpx-vp9 -b:v 0 -crf $Q -c:a copy -tile-columns 2 -tile 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. +2020 version used with parallel + +#+begin_src sh :tangle get-and-compress.sh :eval no +Q=$1 +WIDTH=1280 +HEIGHT=720 +AUDIO_RATE=48000 +VIDEO_FILTER="scale=w=${WIDTH}:h=${HEIGHT}:force_original_aspect_ratio=1,pad=${WIDTH}:${HEIGHT}:(ow-iw)/2:(oh-ih)/2,fps=25,colorspace=all=bt709:iall=bt601-6-625:fast=1" +FILE=$2 +SUFFIX=$Q +shift +shift +if [ ! -f $FILE ]; then + wget https://mirror.csclub.uwaterloo.ca/emacsconf/2020/$FILE +fi +ffmpeg -y -i "$FILE" -pixel_format yuv420p -vf $VIDEO_FILTER -colorspace 1 -color_primaries 1 -color_trc 1 -c:v libvpx-vp9 -b:v 0 -crf $Q -aq-mode 2 -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 -an -threads 8 /dev/null && +if [[ $FILE =~ "webm" ]]; then + ffmpeg -y -i "$FILE" $* -pixel_format yuv420p -vf $VIDEO_FILTER -colorspace 1 -color_primaries 1 -color_trc 1 -c:v libvpx-vp9 -b:v 0 -crf $Q -tile-columns 2 -tile-rows 2 -frame-parallel 0 -cpu-used -5 -auto-alt-ref 1 -lag-in-frames 25 -pass 2 -g 240 -ac 2 -threads 8 -c:a copy "${FILE%.*}--compressed$SUFFIX.webm" +else + ffmpeg -y -i "$FILE" $* -pixel_format yuv420p -vf $VIDEO_FILTER -colorspace 1 -color_primaries 1 -color_trc 1 -c:v libvpx-vp9 -b:v 0 -crf $Q -tile-columns 2 -tile-rows 2 -frame-parallel 0 -cpu-used -5 -auto-alt-ref 1 -lag-in-frames 25 -pass 2 -g 240 -ac 2 -threads 8 -c:a libvorbis "${FILE%.*}--compressed$SUFFIX.webm" +fi +rm $FILE +#+end_src + +2022 version used with parallel to compress low version + +#+begin_src sh :eval no :tangle "compress-video-low.sh" +Q=$1 +WIDTH=1280 +HEIGHT=720 +AUDIO_RATE=48000 +VIDEO_FILTER="scale=w=${WIDTH}:h=${HEIGHT}:force_original_aspect_ratio=1,pad=${WIDTH}:${HEIGHT}:(ow-iw)/2:(oh-ih)/2,fps=25,colorspace=all=bt709:iall=bt601-6-625:fast=1" +FILE=$2 +SUFFIX=$Q +shift +shift +ffmpeg -y -i "$FILE" -pixel_format yuv420p -vf $VIDEO_FILTER -colorspace 1 -color_primaries 1 -color_trc 1 -c:v libvpx-vp9 -b:v 0 -crf $Q -aq-mode 2 -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 -an -threads 8 /dev/null && +if [[ $FILE =~ "webm" ]]; then + ffmpeg -y -i "$FILE" $* -pixel_format yuv420p -vf $VIDEO_FILTER -colorspace 1 -color_primaries 1 -color_trc 1 -c:v libvpx-vp9 -b:v 0 -crf $Q -tile-columns 2 -tile-rows 2 -frame-parallel 0 -cpu-used -5 -auto-alt-ref 1 -lag-in-frames 25 -pass 2 -g 240 -ac 2 -threads 8 -c:a copy "${FILE%.*}--compressed$SUFFIX.webm" +else + ffmpeg -y -i "$FILE" $* -pixel_format yuv420p -vf $VIDEO_FILTER -colorspace 1 -color_primaries 1 -color_trc 1 -c:v libvpx-vp9 -b:v 0 -crf $Q -tile-columns 2 -tile-rows 2 -frame-parallel 0 -cpu-used -5 -auto-alt-ref 1 -lag-in-frames 25 -pass 2 -g 240 -ac 2 -threads 8 -c:a libvorbis "${FILE%.*}--compressed$SUFFIX.webm" +fi + +#+end_src ** When a talk is captioned :PROPERTIES: :CUSTOM_ID: when-captioned |