From 27f594d476c87de4ef164e71b8d6672c118737e1 Mon Sep 17 00:00:00 2001
From: Jonas Smedegaard <dr@jones.dk>
Date: Wed, 7 Jun 2017 17:23:17 +0200
Subject: Adjust lowest bitrates, and add math.

---
 bin/stream | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/bin/stream b/bin/stream
index 34e274b..6a1e31b 100755
--- a/bin/stream
+++ b/bin/stream
@@ -135,14 +135,14 @@ BITS=$(videosize "$HEIGHT" "$RATIO")
 #   + 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:   (105 210) 288 312 384 480 624 816
-#   + 16:9:   (72 180) 216 288 360 432 576 720
-#   + 2.40:1: (60 160) 200 240 320 360 480 600
+#   + 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
 #     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 # 192x80 → 15360
+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
  AFRAMERATE_AAC=22050
  ABITRATE_OPUS=16000
  ABITRATE_AAC=32000
@@ -150,7 +150,7 @@ if [ $BITS -le 15360 ]; then # 192x80 → 15360
  VBITRATE=32000
  SPEED_X264=fast; SPEED_X264_ALONE=fast
  SPEED_VP8=3; SPEED_VP8_ALONE=2
-elif [ $BITS -le 61440 ]; then # 384x160 → 61440
+elif [ $BITS -le 62208 ]; then # 4:3'216→8²*27*36=62208, 16:9'160→16²*24*10=61440
  AFRAMERATE_AAC=22050
  ABITRATE_OPUS=16000
  ABITRATE_AAC=32000
-- 
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