Fix a few crashes.

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

diff --git a/src/lib/ffmpeg_content.cc b/src/lib/ffmpeg_content.cc
index 564200c87d1ca24d970ebe45a5768c999c4b3746..8bcc0986d0eb7f89bbed9cc83adfcdfcaa537aa3 100644 (file)
--- a/src/lib/ffmpeg_content.cc
+++ b/src/lib/ffmpeg_content.cc
@@ -349,9 +349,15 @@ FFmpegContent::identifier () const
 {
        SafeStringStream s;
 
-       s << Content::identifier() << "_"
-         << video->identifier() << "_"
-         << subtitle->identifier();
+       s << Content::identifier();
+
+       if (video) {
+               s << "_" << video->identifier();
+       }
+
+       if (subtitle) {
+               s << "_" << subtitle->identifier();
+       }
 
        boost::mutex::scoped_lock lm (_mutex);
 
@@ -536,8 +542,12 @@ vector<shared_ptr<FFmpegAudioStream> >
 FFmpegContent::ffmpeg_audio_streams () const
 {
        vector<shared_ptr<FFmpegAudioStream> > fa;
-       BOOST_FOREACH (AudioStreamPtr i, audio->streams()) {
-               fa.push_back (dynamic_pointer_cast<FFmpegAudioStream> (i));
+
+       if (audio) {
+               BOOST_FOREACH (AudioStreamPtr i, audio->streams()) {
+                       fa.push_back (dynamic_pointer_cast<FFmpegAudioStream> (i));
+               }
        }
+
        return fa;
 }