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[Michi Henning <michi.henning@xxxxxxxxxxxxx>]

** Also affects: gstreamer (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: gstreamer1.0 (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: gallery-app (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1463262

Title:
  black video thumbnails

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

Bug description:
  I have about 30 photos and 30 videos on the phone.

  When starting the gallery app, I scroll the carousel all the way to
  the right, to force all thumbnails to be loaded. (That's while there
  are still lots of spinners shown.) All the videos appear at the right-
  hand end of the carousel. Most of them have good thumbnails but,
  randomly, a few of them show a black thumbnail.

  Looking in the cache, we do not report any failures or other errors.
  When looking at the cache with thumbnailer-admin, I see that we have
  cached a completely black image in the full-size cache. The only way
  for that to happen is if vs-thumb gives us a black thumbnail without
  reporting an error.

  Looks like streamer is to blame. (I'm seeing this with two concurrent
  vs-thumbs running.)

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