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| -rw-r--r-- | 2022/prepare.md | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/2022/prepare.md b/2022/prepare.md index 1ed04bcd..fe678b57 100644 --- a/2022/prepare.md +++ b/2022/prepare.md @@ -81,6 +81,10 @@ free software, depending on your needs: - [peek](//github.com/phw/peek) - [ffmpeg](//trac.ffmpeg.org/wiki/Capture/Desktop) +If you decide to use OBS, please make sure to verify the window-capture +options. Most notably, there is a “Swap red and blue” option that is +necessary for some setup, and it's easy to miss it. + You might find the following free software programs useful for editing your video recordings: @@ -108,8 +112,9 @@ WebM format if possible.* If you would like to compress your video before uploading, the following shell script may be useful: 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" + CPU=8 + ffmpeg -y -i "$1" -c:v libvpx-vp9 -b:v 0 -crf $Q -an -row-mt 1 -tile-columns 2 -tile-rows 2 -cpu-used $CPU -g 240 -pass 1 -f webm -threads $CPU /dev/null && + ffmpeg -y -i "$1" -c:v libvpx-vp9 -b:v 0 -crf $Q -c:a libopus -row-mt 1 -tile-columns 2 -tile-rows 2 -cpu-used $CPU -pass 2 -g 240 -threads $CPU "$2" If you put it in a file called `compress-video.sh`, you can execute it from the command line with something like `sh compress-video.sh |