diff options
| -rwxr-xr-x | bin/stream | 30 |
1 files changed, 15 insertions, 15 deletions
@@ -132,17 +132,17 @@ videosize() { height=$1; width_or_ratio=$2; BITS=$(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 -# * Recommended sizes (highest modulo 16 or 8 (or 4) size not "pumping" -# in bridge scene 20s into Tears of Steel): -# + 4:3: (96 216) 288 312 384 480 624 816 -# + 16:9: (72 160) 216 288 360 432 576 720 -# + 2.40:1: (80 160) 200 240 320 360 480 600 -# resolved using http://aarmstrong.org/content/aspect_ratio_calc.php +# + bits rounded up to include nearby modulo 16 or 8 sizes +# * Recommended modulo 16 or 8 (or 4) sizes: +# + 4:3: [96 216] 264 312 408 480 624 816 +# + 16:9: [72 160] 216 288 360 432 496(540) 720 +# + 2.40:1: [80 160] 200 240 320 360 480 600(620) +# (highest size not "pumping" in bridge scene 20s into Tears of Steel) +# quantified using http://aarmstrong.org/content/aspect_ratio_calc.php # with ratio as modulo 4 integers, and size a multiplum of that # * speeds tuned to just below 100% cpu usage for each combination on a multi-core computer # TODO: Externalize speeds to site-specific configfile -if [ $BITS -le 15360 ]; then # 4:3'96→16²*8*6=12288, 16:9'72→8²*16*9=9216, 2.40:1'80→16*12*5=15360 +if [ $BITS -le 15360 ]; then # 4:3'96→16²*8*6=12288, 16:9'72→8²*16*9=9216, 2.40:1'80→16²*12*5=15360 AFRAMERATE_AAC=22050 ABITRATE_OPUS=16000 ABITRATE_AAC=32000 @@ -150,7 +150,7 @@ if [ $BITS -le 15360 ]; then # 4:3'96→16²*8*6=12288, 16:9'72→8²*16*9=9216, VBITRATE=32000 SPEED_X264=fast; SPEED_X264_ALONE=fast SPEED_VP8=3; SPEED_VP8_ALONE=2 -elif [ $BITS -le 62208 ]; then # 4:3'216→8²*27*36=62208, 16:9'160→16²*24*10=61440 +elif [ $BITS -le 62208 ]; then # 4:3'216→8²*27*36=62208, 16:9'160→16²*24*10=61440, 2.40:1'160→16²*24*10=61440 AFRAMERATE_AAC=22050 ABITRATE_OPUS=16000 ABITRATE_AAC=32000 @@ -158,27 +158,27 @@ elif [ $BITS -le 62208 ]; then # 4:3'216→8²*27*36=62208, 16:9'160→16²*24*1 VBITRATE=64000 SPEED_X264=fast; SPEED_X264_ALONE=fast SPEED_VP8=3; SPEED_VP8_ALONE=2 -elif [ $BITS -le 110592 ]; then # 234p → 97344 +elif [ $BITS -le 110592 ]; then # 4:3'264→8²*44*33=92928, 16:9'216→8²*48*27=82944, 2.40:1'200→8²*60*25=96000 (234p→97344) VBITRATE=145000 SPEED_X264=fast; SPEED_X264_ALONE=fast SPEED_VP8=3; SPEED_VP8_ALONE=2 -elif [ $BITS -le 150528 ]; then # 270p → 129600 +elif [ $BITS -le 150528 ]; then # 4:3'312→8²*52*39=129792, 16:9'288→16²*32*18=147456, 2.40:1'240→16²*36*15=138240 (270p→129600) VBITRATE=365000 SPEED_X264=faster; SPEED_X264_ALONE=fast SPEED_VP8=4; SPEED_VP8_ALONE=2 -elif [ $BITS -le 196608 ]; then # 360p → 172800 +elif [ $BITS -le 245760 ]; then # 4:3'408→8²*68*51=221952, 16:9'360→8²*80*45=230400, 2.40:1'320→16²*48*20=245760 (360p→230400) VBITRATE=730000 SPEED_X264=veryfast; SPEED_X264_ALONE=fast SPEED_VP8=5; SPEED_VP8_ALONE=3 -elif [ $BITS -le 331776 ]; then # 432p → 331776 +elif [ $BITS -le 331776 ]; then # 4:3'480→16²*40*30=307200, 16:9'432→16²*48*27=331776, 2.40:1'360→8²*108*45=311040 (432p→331776) VBITRATE=1100000 SPEED_X264=ultrafast; SPEED_X264_ALONE=fast SPEED_VP8=8; SPEED_VP8_ALONE=4 -elif [ $BITS -le 589824 ]; then # 540p → 518400 +elif [ $BITS -le 552960 ]; then # 4:3'624→16²*52*39=519168, 16:9'496→16²*56*31=444416(540→4²*240*135=518400), 2.40:1'480→16²*72*30=552960 (540p→518400) VBITRATE=2000000 SPEED_X264=toofast; SPEED_X264_ALONE=veryfast SPEED_VP8_ALONE=5 -elif [ $BITS -le 921600 ]; then # 720p → 921600 +elif [ $BITS -le 922560 ]; then # 4:3'816→16²*68*51=887808, 16:9'720→16²*80*45=921600, 2.40:1'600→8²*180*75=864000(620→4²*372*155=922560) (720p→921600) VBITRATE=3000000 SPEED_X264=toofast; SPEED_X264_ALONE=ultrafast SPEED_VP8_ALONE=15 |