From c0aba8e25ae7dd93aa945d782771d897d49fbea7 Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Tue, 30 Jun 2015 19:35:19 +0200
Subject: demux_lavf: check for NAN rotation angles

Yep, the FFmpeg API can return this.
---
 demux/demux_lavf.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'demux')

diff --git a/demux/demux_lavf.c b/demux/demux_lavf.c
index db4c8edac9..a765ce8a44 100644
--- a/demux/demux_lavf.c
+++ b/demux/demux_lavf.c
@@ -575,9 +575,11 @@ static void handle_stream(demuxer_t *demuxer, int i)
                     / (float)(codec->height * codec->sample_aspect_ratio.den);
 
         uint8_t *sd = av_stream_get_side_data(st, AV_PKT_DATA_DISPLAYMATRIX, NULL);
-        if (sd)
-            sh_video->rotate = -av_display_rotation_get((uint32_t *)sd);
-        sh_video->rotate = ((sh_video->rotate % 360) + 360) % 360;
+        if (sd) {
+            double r = av_display_rotation_get((uint32_t *)sd);
+            if (!isnan(r))
+                sh_video->rotate = (((int)(-r) % 360) + 360) % 360;
+        }
 
         // This also applies to vfw-muxed mkv, but we can't detect these easily.
         sh_video->avi_dts = matches_avinputformat_name(priv, "avi");
-- 
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