desktop-packages team mailing list archive

[Michi Henning <michi.henning@xxxxxxxxxxxxx>]

One other item of info: originally, we were using QProcess::kill() and
QProcess::waitForFinished(). In that case, the hang happens inside
waitForFinished(). Attaching with gdb showed that, ultimately,
waitForFinished() ended up blocked in select().

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https://bugs.launchpad.net/bugs/1466273

Title:
  gstreamer fails intermittently

Status in Thumbnail generator for all kinds of files:
  New
Status in gstreamer package in Ubuntu:
  New
Status in gstreamer1.0 package in Ubuntu:
  New

Bug description:
  gstreamer occasionally fails to extract a thumbnail from a video file.
  It's clearly a race condition because, almost all of the time, it
  succeeds. To reproduce:

  Check out the thumbnailer/devel branch at r217 and build it. Then:

  cd build/src/vs-thumb

  ./vs-thumb fd://0 ./x.jpg <../../../tests/media/testvideo.ogg

  Point a browser at the generated x.jpg file and check that the image
  was extracted correctly.

  Now run

  while ./vs-thumb fd://0 ./x.jpg <../../../tests/media/testvideo.ogg ;
  do :; done

  Within maybe a hundred iterations or so, I get:

  Error creating thumbnail: ThumbnailExtractor: change_state(): reading
  async messages: GStreamer error: negotiation problem.

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