[chronojump] howto_compile.txt with mac ffmpeg/ffplay update

[Xavier de Blas <xaviblas src gnome org>]

commit 02c35c2925d45769e242d78b4079b9f95d596582
Author: Xavier de Blas <xaviblas gmail com>
Date:   Mon May 11 12:31:58 2020 +0200

    howto_compile.txt with mac ffmpeg/ffplay update

 howto_compile.txt | 7 +++++++
 1 file changed, 7 insertions(+)
---
diff --git a/howto_compile.txt b/howto_compile.txt
index 56230a84..587924ad 100644
--- a/howto_compile.txt
+++ b/howto_compile.txt
@@ -46,6 +46,13 @@ And inside the chronojump directory
 
 make osx-installer
 
+
+check new versions of ffmpeg/ffplay
+https://ffmpeg.zeranoe.com/builds/
+
+if there are new versions, download mac64/static
+and copy, ffmpeg, ffplay binaries to ffmpegBinariesMac, git commit/push
+
 #we have not succeded on adding ffmpeg and ffplay binaries using cerbero
 #it works on make install but not on creating the package
 #so this has to be done, adapted from: http://crazyedy.com/tech/?p=535