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tsdemux: Skew correction should use the upstream DTS

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The MPEG-TS packetiser should use the upstream DTS for
skew correction when running in that mode, as the DTS
carries the upstream arrival time. The PTS (if it's
set at all) is less useful, and can be invalid.
This commit is contained in:
Jan Schmidt 2019-02-13 00:54:50 +11:00
parent 8006979109
commit b7f95d64f8
1 changed files with 6 additions and 3 deletions
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9
gst/mpegtsdemux/mpegtspacketizer.c
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@ -665,6 +665,7 @@ mpegts_packetizer_new (void)
void void
mpegts_packetizer_push (MpegTSPacketizer2 * packetizer, GstBuffer * buffer) mpegts_packetizer_push (MpegTSPacketizer2 * packetizer, GstBuffer * buffer)
{ {
GstClockTime ts;
if (G_UNLIKELY (packetizer->empty)) { if (G_UNLIKELY (packetizer->empty)) {
packetizer->empty = FALSE; packetizer->empty = FALSE;
packetizer->offset = GST_BUFFER_OFFSET (buffer); packetizer->offset = GST_BUFFER_OFFSET (buffer);
@ -674,9 +675,11 @@ mpegts_packetizer_push (MpegTSPacketizer2 * packetizer, GstBuffer * buffer)
G_GUINT64_FORMAT, gst_buffer_get_size (buffer), G_GUINT64_FORMAT, gst_buffer_get_size (buffer),
GST_BUFFER_OFFSET (buffer)); GST_BUFFER_OFFSET (buffer));
gst_adapter_push (packetizer->adapter, buffer); gst_adapter_push (packetizer->adapter, buffer);
/* If buffer timestamp is valid, store it */ /* If the buffer has a valid timestamp, store it - preferring DTS,
if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (buffer))) * which is where upstream arrival times should be stored */
packetizer->last_in_time = GST_BUFFER_TIMESTAMP (buffer); ts = GST_BUFFER_DTS_OR_PTS (buffer);
if (GST_CLOCK_TIME_IS_VALID (ts))
packetizer->last_in_time = ts;
} }
static void static void