GStreamer Daemon - Troubleshooting: Difference between revisions

Revision as of 17:58, 14 March 2019

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This wiki show how debug a pipeline using the debug enable.

Debug Log

Gstd redirects its own and any gstreamer log to a folder named gstd, created at /usr/local/var/log. There you can find "gstd.log" and "gst.log":

/usr/local/var/log/gstd/gstd.log: Contains GStreamer Daemon debug messages.
/usr/local/var/log/gstd/gst.log: Contains all the Gstreamer log messages (including debug).

You can also change the gst.log and gstd.log file path when you launch gstd:

gstd --gstd-log-filename /home/nvidia/gstd.log --gst-log-filename /home/nvidia/gst.log

Debug Enable

To debug a pipeline one easy way is enable the debug using gstd, next examples shows how to do it, and what is the expected output when some works good or fail.

pipeline_create p1 videotestsrc ! autovideosink
pipeline_play p1
debug_enable true 
debug_threshold 6
debug_color true 
pipeline_create p playbin uri=file://tmp/video.mp4
pipeline_play p

You can enable debug for specific elements:

debug_threshold *videotestsrc*:5 #set the debug level on all videotestsrc elements to 5  
debug_threshold videotestsrc1:6 #set the debug level on videotestsrc1 to 6

You can find more info about gstreamer debug levels here: https://gstreamer.freedesktop.org/documentation/tutorials/basic/debugging-tools.html

Output when everything works good

Output when something goes wrong

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@@ Line 2: / Line 2: @@
 This wiki show how debug a pipeline using the [[GStreamer Daemon - Enabling the Debug Subsystem|debug enable]].
+== Debug Log ==
+Gstd redirects its own and any gstreamer log to a folder named gstd, created at /usr/local/var/log. There you can find "gstd.log" and "gst.log":
+*/usr/local/var/log/gstd/gstd.log: Contains GStreamer Daemon debug messages.
+*/usr/local/var/log/gstd/gst.log: Contains all the Gstreamer log messages (including debug).
+You can also change the gst.log and gstd.log file path when you launch gstd:
+<syntaxhighlight lang="bash" line="line" style="background-color:lavender">
+gstd --gstd-log-filename /home/nvidia/gstd.log --gst-log-filename /home/nvidia/gst.log
+</syntaxhighlight>
 ==Debug Enable==
@@ Line 14: / Line 25: @@
 pipeline_create p playbin uri=file://tmp/video.mp4
 pipeline_play p
+</syntaxhighlight>
+You can enable debug for specific elements:
+<syntaxhighlight lang="bash" line="line" style="background-color:lavender">
+debug_threshold *videotestsrc*:5 #set the debug level on all videotestsrc elements to 5
+debug_threshold videotestsrc1:6 #set the debug level on videotestsrc1 to 6
 </syntaxhighlight>
+You can find more info about gstreamer debug levels here: https://gstreamer.freedesktop.org/documentation/tutorials/basic/debugging-tools.html
 ===Output when everything works good===