diff options
Diffstat (limited to 'bin/decode+edit+encodeDV')
| -rwxr-xr-x | bin/decode+edit+encodeDV | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/bin/decode+edit+encodeDV b/bin/decode+edit+encodeDV index 6586b8a..ac64d2c 100755 --- a/bin/decode+edit+encodeDV +++ b/bin/decode+edit+encodeDV @@ -10,18 +10,28 @@ OUTPUT=../tmp/omni/show0/earth.dv HEIGHT=360 -# inspired by Apple HLS recommendations -if [ $HEIGHT -le 234 ]; then +RATIO_NUM=4 +RATIO_DEN=3 + +# * bitrates and bits in parens based on https://developer.apple.com/library/content/documentation/General/Reference/HLSAuthoringSpec/Requirements.html +# + bits rounded up to include nearby modulo 16 formats +# + best (i.e. high-modulo) 16:9 heights: 216 288 360 432 576 720 +# + best (i.e. high-modulo) 4:3 heights: 288 312 384 480 624 816 +RATIO_NUM=${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 [ $HEIGHT -le 270 ]; then +elif [ $BITS -le 150528 ]; then # 270p → 129600 VBITRATE=365000 -elif [ $HEIGHT -le 360 ]; then +elif [ $BITS -le 196608 ]; then # 360p → 172800 VBITRATE=730000 -elif [ $HEIGHT -le 432 ]; then +elif [ $BITS -le 331776 ]; then # 432p → 331776 VBITRATE=1100000 -elif [ $HEIGHT -le 540 ]; then +elif [ $BITS -le 589824 ]; then # 540p → 518400 VBITRATE=2000000 -elif [ $HEIGHT -le 720 ]; then +elif [ $BITS -le 921600 ]; then # 720p → 921600 VBITRATE=3000000 fi |