From 4cf5f65c2eb911b3f94cbbaa8480b588173a3fd8 Mon Sep 17 00:00:00 2001
From: Jonas Smedegaard <dr@jones.dk>
Date: Tue, 16 May 2017 13:35:44 +0200
Subject: Resolve bitrate based on height.

---
 bin/capture+encode+serve | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'bin/capture+encode+serve')

diff --git a/bin/capture+encode+serve b/bin/capture+encode+serve
index e3fce44..83af18c 100755
--- a/bin/capture+encode+serve
+++ b/bin/capture+encode+serve
@@ -47,7 +47,15 @@ my $HEIGHT    = 240;
 my $FRAMERATE = 25;
 my $AUDIORATE = 48000;
 
-my $VBITRATE = 256000;
+my $VBITRATE;
+
+# inspired by Apple HLS recommendations
+if    ( $HEIGHT le 234 ) { $VBITRATE = 145000 }
+elsif ( $HEIGHT le 270 ) { $VBITRATE = 365000 }
+elsif ( $HEIGHT le 360 ) { $VBITRATE = 730000 }
+elsif ( $HEIGHT le 432 ) { $VBITRATE = 1100000 }
+elsif ( $HEIGHT le 540 ) { $VBITRATE = 2000000 }
+elsif ( $HEIGHT le 720 ) { $VBITRATE = 3000000 }
 
 my $VCAPS = "video/x-raw,height=$HEIGHT";
 my $ACAPS = "audio/x-raw,rate=$AUDIORATE,channels=2,depth=16";
-- 
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