Fix crash when importing a file called subs.srt.txt.

diff --git a/src/lib/ffmpeg_content.cc b/src/lib/ffmpeg_content.cc
index 02d7a9ff68cf9b85607f81f65d7251f5cef4cdb2..a3a1cfb0fd491da77b0b2ac23b6964fb75983309 100644 (file)
--- a/src/lib/ffmpeg_content.cc
+++ b/src/lib/ffmpeg_content.cc
@@ -405,14 +405,17 @@ FFmpegContent::full_length (shared_ptr<const Film> film) const
                return DCPTime::from_frames (llrint (video->length_after_3d_combine() * frc.factor()), film->video_frame_rate());
        }
 
-       DCPOMATIC_ASSERT (audio);
-
-       DCPTime longest;
-       BOOST_FOREACH (AudioStreamPtr i, audio->streams ()) {
-               longest = max (longest, DCPTime::from_frames (llrint (i->length() / frc.speed_up), i->frame_rate()));
+       if (audio) {
+               DCPTime longest;
+               BOOST_FOREACH (AudioStreamPtr i, audio->streams()) {
+                       longest = max (longest, DCPTime::from_frames(llrint(i->length() / frc.speed_up), i->frame_rate()));
+               }
+               return longest;
        }
 
-       return longest;
+       /* XXX: subtitle content? */
+
+       return DCPTime();
 }
 
 DCPTime