qtdemux: offset edts segments by the min timestamp of the stream

Otherwise if the stream is starting at timestamp=X it would wait
'X' to start playing.

https://bugzilla.gnome.org/show_bug.cgi?id=752603

1 files changed, 9 insertions, 5 deletions

diff --git a/gst/isomp4/qtdemux.c b/gst/isomp4/qtdemux.c
index b5b35fee6..b06060d38 100644
--- a/gst/isomp4/qtdemux.c
+++ b/gst/isomp4/qtdemux.c
@@ -4829,6 +4829,7 @@ gst_qtdemux_stream_update_segment (GstQTDemux * qtdemux, QtDemuxStream * stream,
 {
   QtDemuxSegment *segment;
   GstClockTime start = 0, stop = GST_CLOCK_TIME_NONE, time = 0;
+  GstClockTime min_ts;
   gdouble rate;
   GstEvent *event;
 
@@ -4867,17 +4868,20 @@ gst_qtdemux_stream_update_segment (GstQTDemux * qtdemux, QtDemuxStream * stream,
   /* Copy flags from main segment */
   stream->segment.flags = qtdemux->segment.flags;
 
+  /* need to offset with the start time of the first sample */
+  min_ts = gst_qtdemux_streams_get_first_sample_ts (qtdemux);
+
   /* update the segment values used for clipping */
   stream->segment.offset = qtdemux->segment.offset;
   stream->segment.base = qtdemux->segment.base + stream->accumulated_base;
   stream->segment.applied_rate = qtdemux->segment.applied_rate;
   stream->segment.rate = rate;
   stream->segment.start = start + QTSTREAMTIME_TO_GSTTIME (stream,
-      stream->cslg_shift);
+      stream->cslg_shift) + min_ts;
   stream->segment.stop = stop + QTSTREAMTIME_TO_GSTTIME (stream,
-      stream->cslg_shift);
-  stream->segment.time = time;
-  stream->segment.position = stream->segment.start;
+      stream->cslg_shift) + min_ts;
+  stream->segment.time = time + min_ts;
+  stream->segment.position = stream->segment.start + min_ts;
 
   GST_DEBUG_OBJECT (stream->pad, "New segment: %" GST_SEGMENT_FORMAT,
       &stream->segment);
@@ -12200,7 +12204,7 @@ qtdemux_update_streams (GstQTDemux * qtdemux)
   /* Count n_streams again */
   qtdemux->n_streams = 0;
 
-  for (iter = qtdemux->active_streams;iter; iter = next) {
+  for (iter = qtdemux->active_streams; iter; iter = next) {
     GList *tmp;
     QtDemuxStream *stream = QTDEMUX_STREAM (iter->data);