From cdbf4dee39cdd3dc083299d88d619effc1e72e14 Mon Sep 17 00:00:00 2001
From: Jonas Smedegaard <dr@jones.dk>
Date: Thu, 18 May 2017 09:39:53 +0200
Subject: Generalize encodings as functions.

---
 bin/decode+edit+encode | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

(limited to 'bin/decode+edit+encode')

diff --git a/bin/decode+edit+encode b/bin/decode+edit+encode
index deb732a..0b11a7e 100755
--- a/bin/decode+edit+encode
+++ b/bin/decode+edit+encode
@@ -29,6 +29,14 @@ elif [ $HEIGHT -le 720 ]; then # 720p → 921600
  VBITRATE=3000000
 fi
 
+encode_vp8() { bitrate=$1; speed=$2;
+ echo_n "-codec:v vp8 -quality realtime -deadline 1000000 -cpu-used $speed \
+ -b:v $bitrate -minrate $bitrate -maxrate $bitrate \
+ -undershoot-pct 95 -bufsize $((6000*bitrate/1000)) -rc_init_occupancy $((4000*bitrate/1000)) \
+ -max-intra-rate 0 \
+ -qmin 4 -qmax 56"
+}
+
 mkdir -p $(dirname "$OUTPUT")
 
 # based on http://www.webmproject.org/docs/encoder-parameters/#real-time-cbr-encoding-and-streaming
@@ -42,9 +50,5 @@ ffmpeg -hide_banner -threads auto -y -re \
  "[0:v]format=pix_fmts=yuv420p,scale=iw*sar*$HEIGHT/ih:$HEIGHT,setsar=1[bg];
   [bg][1:v]overlay=main_w-overlay_w-20:main_h-overlay_h-20[v]" \
  -map '[v]' \
- -codec:v vp8 -quality realtime -deadline 1000000 -cpu-used "$SPEED_VP8" \
- -b:v "$VBITRATE" -minrate "$VBITRATE" -maxrate "$VBITRATE" \
- -undershoot-pct 95 -bufsize $((6000*VBITRATE/1000)) -rc_init_occupancy $((4000*VBITRATE/1000)) \
- -max-intra-rate 0 \
- -qmin 4 -qmax 56 \
+ $(encode_vp8 "$VBITRATE" "$SPEED_VP8") \
  -f webm "$OUTPUT"
-- 
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