[Bug 1354901] [NEW] blue videos with QGraphicsProxyWidget

[Milan Herbig]

Public bug reported:

Since Ubuntu 14.10 LTS I have problem with displaying videos through
QGraphicsProxyWidget. All videos are blue colored. Everything works fine
with phonon-backend-vlc, and worked flawlessly on ubuntu 13.10 and
older.

Platform: Ubuntu 14.10 (latest) x64 - all derivates are the same
Python: 2.7+ and PySide 1.2.1 or PyQt 4.10.4
Package version: phonon-backend-gstreamer 4.7.1+git20140403-0ubuntu1

Code to reproduce bug: (works both on PySide and PyQt)
------------------------------------------------------------------------------------------------------------------------------
from PyQt4.QtGui import *
from PyQt4.QtCore import *
from PyQt4.phonon import Phonon

app = QApplication([])
app.setApplicationName("MyApp")
file_path = u"/home/milan/small.mp4"    # change here!

gv = QGraphicsView()
scene = QGraphicsScene(gv)
gv.setScene(scene)

media_src = Phonon.MediaSource(file_path)
media_obj = Phonon.MediaObject()
media_obj.setCurrentSource(media_src)
video_widget = Phonon.VideoWidget()
audio_out = Phonon.AudioOutput(Phonon.VideoCategory)
Phonon.createPath(media_obj, video_widget)
Phonon.createPath(media_obj, audio_out)
playerProxy = scene.addWidget(video_widget)

# rect = QGraphicsRectItem(0, 0, 100, 100)
# rect.setBrush(Qt.red)
# rect.setFlag(QGraphicsItem.ItemIsMovable)
# scene.addItem(rect)

media_obj.play()
gv.show()
app.exec_()
-------------------------------------------------------------------------------------------------------------------------

Code without QGraphicsProxyWidget: (to test phonon functionality)
-------------------------------------------------------------------------------------------------------------------------
from PyQt4.QtGui import *
from PyQt4.QtCore import *
from PyQt4.phonon import Phonon

app = QApplication([])
app.setApplicationName("MyApp")
file_path = u"/home/milan/small.mp4"    # change here !

media_src = Phonon.MediaSource(file_path)
media_obj = Phonon.MediaObject()
media_obj.setCurrentSource(media_src)
video_widget = Phonon.VideoWidget()
audio_out = Phonon.AudioOutput(Phonon.VideoCategory)
Phonon.createPath(media_obj, video_widget)
Phonon.createPath(media_obj, audio_out)

media_obj.play()
video_widget.show()

app.exec_()
--------------------------------------------------------------------------------------------------------------------------

Since phonon-backend-gstreamer version has been updated to 4.7.1 with
Ubuntu 14.10, I believe this is a bug which needs to be fixed.

** Affects: phonon-backend-gstreamer (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: gstreamer phonon python qgraphicsproxywidget

** Attachment added: "Screenshot image"
   https://bugs.launchpad.net/bugs/1354901/+attachment/4173958/+files/screen.png

** Description changed:

  Since Ubuntu 14.10 LTS I have problem with displaying videos through
- QGraphicsProxyWidget. All videos are blue colored. Everything wors fine
+ QGraphicsProxyWidget. All videos are blue colored. Everything works fine
  with phonon-backend-vlc, and worked flawlessly on ubuntu 13.10 and
  older.
  
  Platform: Ubuntu 14.10 (latest) x64 - all derivates are the same
  Python: 2.7+ and PySide 1.2.1 or PyQt 4.10.4
  Package version: phonon-backend-gstreamer 4.7.1+git20140403-0ubuntu1
  
  Code to reproduce bug: (works both on PySide and PyQt)
  ------------------------------------------------------------------------------------------------------------------------------
  from PyQt4.QtGui import *
  from PyQt4.QtCore import *
  from PyQt4.phonon import Phonon
  
  app = QApplication([])
  app.setApplicationName("MyApp")
  file_path = u"/home/milan/small.mp4"    # change here!
  
  gv = QGraphicsView()
  scene = QGraphicsScene(gv)
  gv.setScene(scene)
  
  media_src = Phonon.MediaSource(file_path)
  media_obj = Phonon.MediaObject()
  media_obj.setCurrentSource(media_src)
  video_widget = Phonon.VideoWidget()
  audio_out = Phonon.AudioOutput(Phonon.VideoCategory)
  Phonon.createPath(media_obj, video_widget)
  Phonon.createPath(media_obj, audio_out)
  playerProxy = scene.addWidget(video_widget)
  
  # rect = QGraphicsRectItem(0, 0, 100, 100)
  # rect.setBrush(Qt.red)
  # rect.setFlag(QGraphicsItem.ItemIsMovable)
  # scene.addItem(rect)
  
  media_obj.play()
  gv.show()
  app.exec_()
  -------------------------------------------------------------------------------------------------------------------------
  
- 
  Code without QGraphicsProxyWidget: (to test phonon functionality)
  -------------------------------------------------------------------------------------------------------------------------
  from PyQt4.QtGui import *
  from PyQt4.QtCore import *
  from PyQt4.phonon import Phonon
  
  app = QApplication([])
  app.setApplicationName("MyApp")
  file_path = u"/home/milan/small.mp4"    # change here !
  
  media_src = Phonon.MediaSource(file_path)
  media_obj = Phonon.MediaObject()
  media_obj.setCurrentSource(media_src)
  video_widget = Phonon.VideoWidget()
  audio_out = Phonon.AudioOutput(Phonon.VideoCategory)
  Phonon.createPath(media_obj, video_widget)
  Phonon.createPath(media_obj, audio_out)
  
  media_obj.play()
  video_widget.show()
  
  app.exec_()
  --------------------------------------------------------------------------------------------------------------------------
  
- 
  Since phonon-backend-gstreamer version has been updated to 4.7.1 with
  Ubuntu 14.10, I believe this is a bug which needs to be fixed.

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https://bugs.launchpad.net/bugs/1354901

Title:
  blue videos with QGraphicsProxyWidget

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