Fix another crash introduced in cc40b6ea6d882c07c05602d6f3dd1c185481585b

diff --git a/src/lib/ffmpeg_examiner.cc b/src/lib/ffmpeg_examiner.cc
index 0f2b89f3d0f9e88c6f5819cba7cb204431877bef..78b96666f4f8065476b2c83483cf9290aa09d0c3 100644 (file)
--- a/src/lib/ffmpeg_examiner.cc
+++ b/src/lib/ffmpeg_examiner.cc
@@ -169,7 +169,7 @@ DCPOMATIC_ENABLE_WARNINGS
 DCPOMATIC_DISABLE_WARNINGS
        auto context = _format_context->streams[_packet.stream_index]->codec;
 DCPOMATIC_ENABLE_WARNINGS
-       while (video_packet(context, temporal_reference)) {}
+       while (_video_stream && video_packet(context, temporal_reference)) {}
        for (size_t i = 0; i < _audio_streams.size(); ++i) {
                if (_audio_streams[i]->uses_index (_format_context, _packet.stream_index)) {
                        audio_packet (context, _audio_streams[i]);