From 39bc48eb0e8b9a2b8d43d6f1a612c12d0c70ae23 Mon Sep 17 00:00:00 2001
From: Jonas Smedegaard <dr@jones.dk>
Date: Thu, 18 May 2017 08:46:41 +0200
Subject: Convert pixel format explictly as filter (not implicitly as
 constraint, for each encoding).

---
 bin/decode+edit+encode             | 3 +--
 bin/decode+edit+loop+encode+stream | 3 +--
 bin/encodevideo+loop+stream        | 2 +-
 bin/loop+encode+stream             | 2 +-
 bin/stream                         | 4 +---
 5 files changed, 5 insertions(+), 9 deletions(-)

diff --git a/bin/decode+edit+encode b/bin/decode+edit+encode
index f21ef51..deb732a 100755
--- a/bin/decode+edit+encode
+++ b/bin/decode+edit+encode
@@ -39,10 +39,9 @@ ffmpeg -hide_banner -threads auto -y -re \
  -i "$INPUT" \
  -i "$LOGO" \
  -filter_complex \
- "[0:v]scale=iw*sar*$HEIGHT/ih:$HEIGHT,setsar=1[bg];
+ "[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]' \
- -pix_fmt yuv420p \
  -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 $((4000*VBITRATE/1000)) \
diff --git a/bin/decode+edit+loop+encode+stream b/bin/decode+edit+loop+encode+stream
index 8904a4a..6e65697 100755
--- a/bin/decode+edit+loop+encode+stream
+++ b/bin/decode+edit+loop+encode+stream
@@ -64,10 +64,9 @@ ffmpeg -hide_banner -threads auto -re \
  -f lavfi -i "movie=filename=$INPUT:loop=$ITERATIONS, setpts=N/(FRAME_RATE*TB)" \
  -i "$LOGO" \
  -filter_complex \
- "[0:v]scale=iw*sar*$HEIGHT/ih:$HEIGHT,setsar=1[bg];
+ "[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]' \
- -pix_fmt yuv420p \
  -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 $((4000*VBITRATE/1000)) \
diff --git a/bin/encodevideo+loop+stream b/bin/encodevideo+loop+stream
index 266a733..b054782 100755
--- a/bin/encodevideo+loop+stream
+++ b/bin/encodevideo+loop+stream
@@ -54,8 +54,8 @@ fi
 # + Use same RTP payload types as GStreamer
 ffmpeg -hide_banner -threads auto -re \
  -stream_loop -1 -i "$INPUT" \
+ -vf format=pix_fmts=yuv420p \
  -map '0:v' \
- -pix_fmt yuv420p \
  -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 $((4000*VBITRATE/1000)) \
diff --git a/bin/loop+encode+stream b/bin/loop+encode+stream
index 5beef2d..3906552 100755
--- a/bin/loop+encode+stream
+++ b/bin/loop+encode+stream
@@ -60,11 +60,11 @@ fi
 # + Use same RTP payload types as GStreamer
 ffmpeg -hide_banner -threads auto -re \
  -stream_loop -1 -i "$INPUT" \
+ -vf format=pix_fmts=yuv420p \
  -map '0:a' \
  -codec:a libopus -ac "$ACHANNELS" -ar "$AFRAMERATE_OPUS" -b:a "$ABITRATE_OPUS" \
  -f rtp -payload_type 111 "rtp://$IP:$FIRSTPORT?pkt_size=1200" \
  -map '0:v' \
- -pix_fmt yuv420p \
  -codec:v vp8 -quality realtime -deadline 1000000 -cpu-used "$SPEED_VP8" \
  -b:v "$VBITRATE" -minrate "$VBITRATE" -maxrate "$VBITRATE" \
  -undershoot-pct 95 -bufsize $((6000*VBITRATE/1000)) -rc_init_occupancy $((4000*VBITRATE/1000)) \
diff --git a/bin/stream b/bin/stream
index a66d869..ce90206 100755
--- a/bin/stream
+++ b/bin/stream
@@ -160,7 +160,7 @@ HEIGHTS=$(uniqwords "$HEIGHTS_WEBM $HEIGHTS_MPEG")
 
 filter_split_height() {
  heightcount=$(echo "$HEIGHTS" | wc --words)
- echo_n "[$VSTREAMINDEX:v]${DEINT:+$DEINT,}split=$heightcount"
+ echo_n "[$VSTREAMINDEX:v]${DEINT:+$DEINT,}format=pix_fmts=yuv420p,split=$heightcount"
  printf_each '[s%s]' "$HEIGHTS"
 }
 filter_scale() { outstem=${1:-v};
@@ -209,7 +209,6 @@ ffmpeg -hide_banner -threads auto \
  ${HASAUDIO:+\
  -codec:a libopus -ac "$ACHANNELS" -ar "$AFRAMERATE_OPUS" -b:a "$ABITRATE_OPUS" } \
  ${HASVIDEO:+\
- -pix_fmt yuv420p \
  -codec:v vp8 -quality realtime -deadline 1000000 -cpu-used "$SPEED_VP8" \
  -b:v "$VBITRATE" -minrate "$VBITRATE" -maxrate "$VBITRATE" \
  -undershoot-pct 95 -bufsize $((6000*VBITRATE/1000)) -rc_init_occupancy $((4000*VBITRATE/1000)) \
@@ -225,7 +224,6 @@ ffmpeg -hide_banner -threads auto \
  ${HASAUDIO:+\
  -codec:a aac -strict experimental -ac "$ACHANNELS" -ar "$AFRAMERATE_AAC" -b:a $((ACHANNELS*ABITRATE_AAC)) } \
  ${HASVIDEO:+\
- -pix_fmt yuv420p \
  -codec:v libx264 -preset "$SPEED_X264" -tune zerolatency \
  -maxrate "$VBITRATE" -bufsize "$((VBITRATE*2))" -crf 23 } \
  -force_key_frames 'expr:gte(t,n_forced*2)' \
-- 
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