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authorLeo Vivier <zaeph@zaeph.net>2022-12-02 08:51:04 +0100
committerLeo Vivier <zaeph@zaeph.net>2022-12-02 08:51:04 +0100
commitc54df7a0458001693ddd996dc4222e3ff00ad487 (patch)
tree0ecea1aa0e6196283ece301e0a165256cf2fccd3 /roles/prerec
parentb9fdae5d678fd00ff420c8fa7b4fbf06298aeb1c (diff)
downloademacsconf-ansible-c54df7a0458001693ddd996dc4222e3ff00ad487.tar.xz
emacsconf-ansible-c54df7a0458001693ddd996dc4222e3ff00ad487.zip
Prototype upwards fps-limiter
Diffstat (limited to 'roles/prerec')
-rwxr-xr-xroles/prerec/templates/reencode.sh17
1 files changed, 15 insertions, 2 deletions
diff --git a/roles/prerec/templates/reencode.sh b/roles/prerec/templates/reencode.sh
index 5a0128b..c9c87e1 100755
--- a/roles/prerec/templates/reencode.sh
+++ b/roles/prerec/templates/reencode.sh
@@ -8,7 +8,12 @@ cpu=4
time_limit=""
print_only=false
limit_resolution=1080
-limit_fps=30.01
+limit_fps=29.99
+
+with_suffix() {
+ suffix="$1"
+ echo "$input" | sed "s/--original\.\([a-z0-9]*\$\)/--$suffix\.\\1/"
+}
while getopts :q:c:t:s OPT; do
case $OPT in
@@ -33,16 +38,24 @@ shift `expr $OPTIND - 1`
OPTIND=1
input="$1"
+input_limited="$(with_suffix "original-limited")"
output="$2"
command="$(cat<<EOF
+# Preliminary pass to limit resolution and fps
ffmpeg -y -i "$input" $time_limit \
-vf "scale='-1':'min($limit_resolution,ih)',
select='eq(n,0)+if(gt(t-prev_selected_t,1/$limit_fps),1,0)'" \
+ -c:v rawvideo -c:a pcm_s16le -f nut - | ffmpeg -y -f nut -i - -vf "fps=$limit_fps" "$input_limited"
+
+# Reencode
+ffmpeg -y -i "$input_limited" $time_limit \
+ -vf "scale='-1':'min($limit_resolution,ih)',
+ select='eq(n,0)+if(gt(t-prev_selected_t,1/$limit_fps),1,0)'" \
-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 $cpu /dev/null &&
- ffmpeg -y -i "$input" $time_limit \
+ ffmpeg -y -i "$input_limited" $time_limit \
-vf "scale='-1':'min($limit_resolution,ih)',
select='eq(n,0)+if(gt(t-prev_selected_t,1/$limit_fps),1,0)'" \
-c:v libvpx-vp9 -b:v 0 -crf $q -c:a libopus \