X-Git-Url: https://git.carlh.net/gitweb/?p=dcpomatic.git;a=blobdiff_plain;f=src%2Flib%2Fffmpeg_examiner.cc;fp=src%2Flib%2Fffmpeg_examiner.cc;h=51ade8e89cb844336baa4dfac51ef56be3f4fbea;hp=787198e4a477417570880bfdfe11bc8322ccf017;hb=027a6534067edc6fe9390d9ecc750e9982d5437c;hpb=bdcaf60ec37ec694f1e221a33b090f670bf974d6

diff --git a/src/lib/ffmpeg_examiner.cc b/src/lib/ffmpeg_examiner.cc
index 787198e4a..51ade8e89 100644
--- a/src/lib/ffmpeg_examiner.cc
+++ b/src/lib/ffmpeg_examiner.cc
@@ -195,7 +195,9 @@ FFmpegExaminer::FFmpegExaminer (shared_ptr<const FFmpegContent> c, shared_ptr<Jo
 			_rotation = - av_display_rotation_get ((int32_t*) displaymatrix);
 		}
 
-		_rotation = *_rotation - 360 * floor (*_rotation / 360 + 0.9 / 360);
+		if (_rotation) {
+			_rotation = *_rotation - 360 * floor (*_rotation / 360 + 0.9 / 360);
+		}
 	}
 
 	LOG_GENERAL("Temporal reference was %1", temporal_reference);