diff options
| author | Sacha Chua <sacha@sachachua.com> | 2020-12-08 21:48:04 -0500 |
|---|---|---|
| committer | Sacha Chua <sacha@sachachua.com> | 2020-12-08 21:48:04 -0500 |
| commit | 32a4711e753c53b41db1077c8f40a21713f91fd4 (patch) | |
| tree | 43058fc9229839894a99037e01d00ab2afa2ea88 | |
| parent | ccb8be62cfb1ebdfe1d506192c800d8b68f0f611 (diff) | |
| download | emacsconf-wiki-32a4711e753c53b41db1077c8f40a21713f91fd4.tar.xz emacsconf-wiki-32a4711e753c53b41db1077c8f40a21713f91fd4.zip | |
Add ffmpeg incantation
| -rw-r--r-- | 2020/organizers-notebook.org | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/2020/organizers-notebook.org b/2020/organizers-notebook.org index 29ad4dd4..455af4f1 100644 --- a/2020/organizers-notebook.org +++ b/2020/organizers-notebook.org @@ -189,3 +189,21 @@ using ffmpeg. +* Compressing video + +Usage: compress-video input-filename.webm output-filename.webm +Thanks to ArneBab for this incantation! + +#+begin_src sh :tangle compress-video.sh +Q=56 +nice 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 999 -pass 1 -f webm -threads 8 /dev/null && +nice ffmpeg -y -i $1 -c:v libvpx-vp9 -b:v 0 -crf $Q -aq-mode 2 -c:a libopus -b:a 12k -tile-columns 2 -tile-rows 2 -frame-parallel 0 -cpu-used -5 -auto-alt-ref 1 -lag-in-frames 25 -pass 2 -g 999 -threads 8 $2 +#+end_src + +Usage: compress-video-original-audio input-filename.webm output-filename.webm + +#+begin_src sh :tangle compress-video-original-audio.sh +Q=56 +nice 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 999 -pass 1 -f webm -threads 8 /dev/null && +nice ffmpeg -y -i $1 -c:v libvpx-vp9 -b:v 0 -crf $Q -aq-mode 2 -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 999 -threads 8 $2 +#+end_src |