[pitivi] pitivi: Make watchdog an opt-in optional UNSTABLE feature for now

[Thibault Saunier <tsaunier src gnome org>]

commit c510dfe946af5003c659649e0c56e277c8112fcc
Author: Thibault Saunier <tsaunier gnome org>
Date:   Thu Jan 8 19:43:19 2015 +0100

    pitivi: Make watchdog an opt-in optional UNSTABLE feature for now
    
    It still has some bugs to investigate to always activate it.

 pitivi/utils/pipeline.py |   15 +++++++++------
 1 files changed, 9 insertions(+), 6 deletions(-)
---
diff --git a/pitivi/utils/pipeline.py b/pitivi/utils/pipeline.py
index f53f9fa..3a2c1f7 100644
--- a/pitivi/utils/pipeline.py
+++ b/pitivi/utils/pipeline.py
@@ -24,6 +24,7 @@
 """
 High-level pipelines
 """
+import os
 import platform
 
 
@@ -604,13 +605,15 @@ class Pipeline(GES.Pipeline, SimplePipeline):
         self._seeker = Seeker()
         self._seeker.connect("seek", self._seekCb)
         self._seeker.connect("seek-relative", self._seekRelativeCb)
-        watchdog = Gst.ElementFactory.make("watchdog", None)
-        if watchdog:
-            watchdog.props.timeout = WATCHDOG_TIMEOUT * 1000
-            self.props.video_filter = watchdog
+
+        if "watchdog" in os.environ.get("PITIVI_UNSTABLE_FEATURES", None):
             watchdog = Gst.ElementFactory.make("watchdog", None)
-            watchdog.props.timeout = WATCHDOG_TIMEOUT * 1000
-            self.props.audio_filter = watchdog
+            if watchdog:
+                watchdog.props.timeout = WATCHDOG_TIMEOUT * 1000
+                self.props.video_filter = watchdog
+                watchdog = Gst.ElementFactory.make("watchdog", None)
+                watchdog.props.timeout = WATCHDOG_TIMEOUT * 1000
+                self.props.audio_filter = watchdog
 
     def _getDuration(self):
         return self._timeline.get_duration()