[gstreamer-bugs] [Bug 569673] New: [Mpegtsparse] PAT changes not always signaled
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Thu Jan 29 05:46:19 PST 2009
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GStreamer | gst-plugins-bad | Ver: 0.10.10
Summary: [Mpegtsparse] PAT changes not always signaled
AssignedTo: gstreamer-bugs at lists.sourceforge.net
ReportedBy: mutex at runbox.com
QAContact: gstreamer-bugs at lists.sourceforge.net
GNOME version: Unspecified
GNOME milestone: Unspecified
Please describe the problem:
While reading a MPTS file, there is some cases where PAT changes are not always
signals (via a gst_post_message).
Steps to reproduce:
1. take 2 MPTS file stream (recorded from a dvb device)
2. Use a MPTS file which mix 2 MPTS stream. A such file can be created with dd
: dd bs=188 count=100000 if=stream1.ts of=mix.ts ; dd bs=188 count=100000
if=stream2.ts >> mix.ts ; dd bs=188 count=100000 if=stream1.ts >> mix.ts
3. run the following command: gst-launch -m filesrc location=mix.ts !
mpegtsparse | grep pat
There are only two pat changes reported. There should be three : one for each
part of the file.
In fact the last pat change (when mpegtsparse is back to the stream1) is
There should be three PAT announcement.
Does this happen every time?
In fact, subtables are decoded for the PAT table which doesn't make sense.
A proposed patch inhibits the subtable mechanism when parsing the PAT.
It also clean mpegtspacketizer stream's structure when streams are out of date
(on pat change).
Note: I can send a mix.ts file on demand.
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