From c19b33c6eda0232d045df9f323524ec8d812c260 Mon Sep 17 00:00:00 2001
From: Jonas Smedegaard <dr@jones.dk>
Date: Tue, 16 May 2017 14:20:01 +0200
Subject: Scale anamorphic to square-pixel as needed.

---
 bin/decode+edit+loop+encode+stream | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

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

diff --git a/bin/decode+edit+loop+encode+stream b/bin/decode+edit+loop+encode+stream
index 5dbe82d..ba70b02 100755
--- a/bin/decode+edit+loop+encode+stream
+++ b/bin/decode+edit+loop+encode+stream
@@ -35,13 +35,14 @@ fi
 # based on http://www.webmproject.org/docs/encoder-parameters/#real-time-cbr-encoding-and-streaming
 # + loop-in-filter trick based on http://video.stackexchange.com/a/16933
 # + scale+watermark trick based on http://stackoverflow.com/a/10937357
+# + scale to square pixels as needed
 # + Add 1s latency (deadline)
 # + Use same RTP payload types as GStreamer
 ffmpeg -hide_banner -threads auto -re \
  -f lavfi -i "movie=filename=$INPUT:loop=$ITERATIONS, setpts=N/(FRAME_RATE*TB)" \
  -i "$LOGO" \
  -filter_complex \
- "[0:v]scale=-2:$HEIGHT[bg];
+ "[0:v]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 \
-- 
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