Unable to open stream [Unable to create io-slave]

Status changed to 'Confirmed' because the bug affects multiple users.

I have the same problem. I can go forward in TS file by using Cursor keys, but the picture of the videostream will not be updated.
The picture will only be updated by switching between maximized window and normal window.

I'm not exactly sure where to submit the code (or even if it's really just a kludge) but adding imagedisplay->update(); in updateimagedisplay() of dvbcut.cpp on line 1586 seems to fix the problem. I suspect that setPixmap might not imply update() in QT4.
I included a patch for git in case that helps.

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This bug was fixed in the package dvbcut - 0.5.4+svn178-2

---------------
dvbcut (0.5.4+svn178-2) unstable; urgency=low

  * Team upload.

  [ Fabrice Coutadeur ]
  * Adapt package to use debhelper tiny form:
    + debian/rules:
      - use debhelper tiny form
      - Adapt dh_auto_configure target for automake build system
      - Delete generated files in override_dh_auto_clean to be able to build
        dvbcut locally twice
    + debian/dvbcut.menu: rename menu file to dvbcut.menu to makes it
      automatically installable by debhelper
    + debian/dvbcut.install: rename install file to dvbcut.install as stated in
      the debhelper manpage and Manually installs files to avoid the local
      update of the mime database
  * Change back build system to autotools so that qt4 patch can be adopted
    upstream (Closes: #656793).
    + debian/control:
      - Drop scons build dependency. It's not used anymore.
      - Drop cmake dependency
      - Added b-d on autoconf to generate configure script
      - Added b-d on pkg-config, used to get qt4 libs and includes
    + port-to-qt4.patch:
      - Drop cmake files from qt4 patch
      - Update configure and src/Makefile.in for qt4
    + This allows the automatic installation of desktop file and icon
      (Closes: #660009)
  * Refresh fix-ftbfs-libav0.7 patch to use -pab as quilt arg. This makes futur
    refreshes lighter.
  * Rename docs to dvbcut.docs and manpages to dvbcut.manpages to follow
    debhelper recommendations. thanks bojo42 for the tip.
  * fix_gcc_4.7.patch: fix FTBFS with gcc 4.7 because of missing include.
    (Closes: #667154)

  [ Alessio Treglia ]
  * Add patch to fix "Unable to open stream" error. (LP: #875030)
  * Update debian/copyright to copyright format 1.0.
  * Bump Standards.

 -- Alessio Treglia <email address hidden> Tue, 24 Apr 2012 12:54:45 +0200