Don't emit zero-sample buffers.

diff --git a/src/lib/player.cc b/src/lib/player.cc
index dffe7dbee52d3a7bde7372dde98464d9c8f99b2f..7d8add416132fe52f4bc59c9faf4b39099502ccf 100644 (file)
--- a/src/lib/player.cc
+++ b/src/lib/player.cc
@@ -545,9 +545,12 @@ Player::pass ()
                DCPTime t = _last_audio_time;
                while (t < length) {
                        DCPTime block = min (DCPTime::from_seconds (0.5), length - t);
-                       shared_ptr<AudioBuffers> silence (new AudioBuffers (_film->audio_channels(), block.frames_round(_film->audio_frame_rate())));
-                       silence->make_silent ();
-                       Audio (silence, t);
+                       Frame const samples = block.frames_round(_film->audio_frame_rate());
+                       if (samples) {
+                               shared_ptr<AudioBuffers> silence (new AudioBuffers (_film->audio_channels(), samples));
+                               silence->make_silent ();
+                               Audio (silence, t);
+                       }
                        t += block;
                }