Improve an error message.

[dcpomatic.git] / src / lib / reel_writer.cc

diff --git a/src/lib/reel_writer.cc b/src/lib/reel_writer.cc
index 2c74d66bdb664fb2ee4950fd07204349ace269e6..27f10d1ed4bc874f492428522569a470183d14ae 100644 (file)
--- a/src/lib/reel_writer.cc
+++ b/src/lib/reel_writer.cc
@@ -361,7 +361,12 @@ ReelWriter::create_reel (list<ReferencedReelAsset> const & refs, list<shared_ptr
        LOG_GENERAL ("create_reel for %1-%2; %3 of %4", _period.from.get(), _period.to.get(), _reel_index, _reel_count);
 
        DCPOMATIC_ASSERT (reel_picture_asset);
-       DCPOMATIC_ASSERT (reel_picture_asset->duration() == _period.duration().frames_round (_film->video_frame_rate ()));
+       if (reel_picture_asset->duration() != _period.duration().frames_round (_film->video_frame_rate ())) {
+               throw ProgrammingError (
+                       __FILE__, __LINE__,
+                       String::compose ("%1 vs %2", reel_picture_asset->duration(), _period.duration().frames_round (_film->video_frame_rate ()))
+                       );
+       }
        reel->add (reel_picture_asset);
 
        /* If we have a hash for this asset in the CPL, assume that it is correct */