From ff67fbf328b32202f9fea8223f73c6dbcb44eca2 Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Sun, 20 Oct 2019 17:28:48 +0200
Subject: [PATCH] build: lower required FFmpeg version

The FFmpeg version was last bumped a long time ago, except in commit
1638fa7b4663e4ad46ccd9750, where it was used for some obscure pixel
format.

This is pretty annoying, so make it optional.
---
 video/fmt-conversion.c | 2 ++
 wscript                | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/video/fmt-conversion.c b/video/fmt-conversion.c
index 6e298d0057..72f4407e70 100644
--- a/video/fmt-conversion.c
+++ b/video/fmt-conversion.c
@@ -35,7 +35,9 @@ static const struct {
     {IMGFMT_RGB24, AV_PIX_FMT_RGB24},
     {IMGFMT_UYVY,  AV_PIX_FMT_UYVY422},
     {IMGFMT_NV12,  AV_PIX_FMT_NV12},
+#if LIBAVUTIL_VERSION_MICRO >= 100 && LIBAVUTIL_VERSION_INT >= AV_VERSION_INT(56, 27, 0)
     {IMGFMT_NV24,  AV_PIX_FMT_NV24},
+#endif
     {IMGFMT_Y8,    AV_PIX_FMT_GRAY8},
     {IMGFMT_Y16, AV_PIX_FMT_GRAY16},
     {IMGFMT_420P,  AV_PIX_FMT_YUV420P},
diff --git a/wscript b/wscript
index d4d1353112..77fe5521b8 100644
--- a/wscript
+++ b/wscript
@@ -424,7 +424,7 @@ iconv support use --disable-iconv.",
 ]
 
 ffmpeg_pkg_config_checks = [
-    'libavutil',     '>= 56.27.100',
+    'libavutil',     '>= 56.12.100',
     'libavcodec',    '>= 58.16.100',
     'libavformat',   '>= 58.9.100',
     'libswscale',    '>= 5.0.101',