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-rw-r--r--gst/qtdemux/qtdemux.c19
1 files changed, 18 insertions, 1 deletions
diff --git a/gst/qtdemux/qtdemux.c b/gst/qtdemux/qtdemux.c
index b6ee29be..e62fba0c 100644
--- a/gst/qtdemux/qtdemux.c
+++ b/gst/qtdemux/qtdemux.c
@@ -1876,6 +1876,9 @@ qtdemux_parse_trak (GstQTDemux * qtdemux, GNode * trak)
tkhd = qtdemux_tree_get_child_by_type (trak, FOURCC_tkhd);
g_assert (tkhd);
+ GST_LOG ("track[tkhd] version/flags: 0x%08x",
+ QTDEMUX_GUINT32_GET (tkhd->data + 8));
+
/* track duration? */
mdia = qtdemux_tree_get_child_by_type (trak, FOURCC_mdia);
@@ -1885,7 +1888,21 @@ qtdemux_parse_trak (GstQTDemux * qtdemux, GNode * trak)
g_assert (mdhd);
stream->timescale = QTDEMUX_GUINT32_GET (mdhd->data + 20);
- GST_INFO ("track timescale: %d", stream->timescale);
+ GST_LOG ("track timescale: %d", stream->timescale);
+ GST_LOG ("track duration: %d", QTDEMUX_GUINT32_GET (mdhd->data + 24));
+
+ /* HACK:
+ * some of those trailers, nowadays, have prologue images that are
+ * themselves vide tracks as well. I haven't really found a way to
+ * identify those yet, except for just looking at their duration. */
+ if ((guint64) QTDEMUX_GUINT32_GET (mdhd->data + 24) *
+ qtdemux->timescale * 10 / (stream->timescale * qtdemux->duration) < 2) {
+ GST_WARNING ("Track shorter than 20%% (%d/%d vs. %d/%d) of the stream "
+ "found, assuming preview image or something; skipping track",
+ QTDEMUX_GUINT32_GET (mdhd->data + 24), stream->timescale,
+ qtdemux->duration, qtdemux->timescale);
+ return;
+ }
hdlr = qtdemux_tree_get_child_by_type (mdia, FOURCC_hdlr);
g_assert (hdlr);