[FFmpeg-cvslog] Fix writing first audio Cues in dash mode.

[Frank Galligan]

ffmpeg | branch: master | Frank Galligan <frankgalligan at gmail.com> | Thu Oct  9 08:28:00 2014 -0700| [241b306b1eaa1be843e496653ed8e03b25dbe118] | committer: Michael Niedermayer

Fix writing first audio Cues in dash mode.

In dahsmode Matroska is not writing the first Cluster for every
audio stream in the Cues element.

Signed-off-by: Frank Galligan <frankgalligan at gmail.com>
Reviewed-by: Vignesh Venkatasubramanian <vigneshv at google.com>
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=241b306b1eaa1be843e496653ed8e03b25dbe118
---

 libavformat/matroskaenc.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c
index 4af2d6e..00a0c18 100644
--- a/libavformat/matroskaenc.c
+++ b/libavformat/matroskaenc.c
@@ -1770,7 +1770,8 @@ static int mkv_write_packet(AVFormatContext *s, AVPacket *pkt)
         // on seeing key frames.
         start_new_cluster = keyframe;
     } else if (mkv->is_dash && codec_type == AVMEDIA_TYPE_AUDIO &&
-               cluster_time > mkv->cluster_time_limit) {
+               (mkv->cluster_pos == -1 ||
+                cluster_time > mkv->cluster_time_limit)) {
         // For DASH audio, we create a Cluster based on cluster_time_limit
         start_new_cluster = 1;
     } else if (!mkv->is_dash &&