diff options
| author | Jonas Smedegaard <dr@jones.dk> | 2017-05-18 11:06:33 +0200 |
|---|---|---|
| committer | Jonas Smedegaard <dr@jones.dk> | 2017-05-18 11:06:33 +0200 |
| commit | 56b7655e67528880778696d32f2d3a3e3ff30782 (patch) | |
| tree | 97dcafe8019733a36e89a3015bb0b09c98d1da10 /bin/decode+edit+encodeDV | |
| parent | bff6b3ca2fc4f13592a52e3979161c8faa5b7bc0 (diff) | |
Generalize function videosize.
Diffstat (limited to 'bin/decode+edit+encodeDV')
| -rwxr-xr-x | bin/decode+edit+encodeDV | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/bin/decode+edit+encodeDV b/bin/decode+edit+encodeDV index ac64d2c..1a8bb45 100755 --- a/bin/decode+edit+encodeDV +++ b/bin/decode+edit+encodeDV @@ -4,23 +4,30 @@ set -e +## +## defaults +## INPUT=../src/omni/show0/earth.mp4 LOGO=../../content/icon_small.png OUTPUT=../tmp/omni/show0/earth.dv +RATIO=4:3 HEIGHT=360 -RATIO_NUM=4 -RATIO_DEN=3 +videosize() { height=$1; width_or_ratio=$2; + case $width_or_ratio in + *:*) num=${width_or_ratio%:*}; den=${width_or_ratio#*:}; width=$((height*num/den));; + *) width=$width_or_ratio;; + esac + echo_n $((height*width)) +} + +BITS=$(videosize "$HEIGHT" "$RATIO") # * bitrates and bits in parens based on https://developer.apple.com/library/content/documentation/General/Reference/HLSAuthoringSpec/Requirements.html # + bits rounded up to include nearby modulo 16 formats # + best (i.e. high-modulo) 16:9 heights: 216 288 360 432 576 720 # + best (i.e. high-modulo) 4:3 heights: 288 312 384 480 624 816 -RATIO_NUM=${RATION_NUM:-16} -RATIO_DEN=${RATION_DEN:-9} -WIDTH=${WIDTH:-$((HEIGHT*RATIO_NUM/RATIO_DEN))} -BITS=$((WIDTH*HEIGHT)) if [ $BITS -le 110592 ]; then # 234p → 97344 VBITRATE=145000 elif [ $BITS -le 150528 ]; then # 270p → 129600 |