From b5e3dbd415fa8c59eec9bc8e2261ef4dde2754fb Mon Sep 17 00:00:00 2001
From: Isaac Connor <isaac@zoneminder.com>
Date: Sun, 29 Dec 2019 12:52:34 -0500
Subject: [PATCH] put back 32bit alignment with a comment as to why

---
 src/zm_ffmpeg_camera.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/zm_ffmpeg_camera.cpp b/src/zm_ffmpeg_camera.cpp
index cdb8a40b7..6578b0b2d 100644
--- a/src/zm_ffmpeg_camera.cpp
+++ b/src/zm_ffmpeg_camera.cpp
@@ -1087,9 +1087,10 @@ int FfmpegCamera::transfer_to_image(
     return -1;
   }
 #if LIBAVUTIL_VERSION_CHECK(54, 6, 0, 6, 0)
+  // From what I've read, we should align the linesizes to 32bit so that ffmpeg can use SIMD instructions too.
   int size = av_image_fill_arrays(
       output_frame->data, output_frame->linesize,
-      directbuffer, imagePixFormat, width, height, 1);
+      directbuffer, imagePixFormat, width, height, 32);
   if ( size < 0 ) {
     Error("Problem setting up data pointers into image %s",
         av_make_error_string(size).c_str());