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[Bug 1223555] [NEW] OpenShot Crash at videospeed x5 / x10 / ...

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Public bug reported:

Hello together,

Is i play the preview or render the project openshot crashes with the error:
python: /build/buildd/libav-extra-0.8.6ubuntu2/libav/libavutil/mathematics.c:80: av_rescale_rnd: Zusicherung »b >=0« nicht erfüllt.
(means: b>=0 is not met)

found same error here:
http://forum.ubuntuusers.de/topic/openshot-stuerzt-bei-dreifacher-geschwindigkei/#post-5642922

If i speed up a clip and play it, i got a different result than expectet. Just some pictures from the clip, but not the faster clip.
Is there a problem with the lib?

Thanks for your help
bernibaerchen

PS.:
LSB Version:	core-2.0-ia32:core-2.0-noarch:core-3.0-ia32:core-3.0-noarch:core-3.1-ia32:core-3.1-noarch:core-3.2-ia32:core-3.2-noarch:core-4.0-ia32:core-4.0-noarch

apt-cache policy openshot
openshot:
  Installiert:           1.4.3-1
  Installationskandidat: 1.4.3-1
  Versionstabelle:
 *** 1.4.3-1 0
        500 http://ch.archive.ubuntu.com/ubuntu/ raring/universe i386 Packages
        100 /var/lib/dpkg/status

apt-cache policy openshot gtk2-engines-pixbuf fontconfig librsvg2-common melt python-gtk2 python-httplib2 python-imaging python-mlt5 python-pygoocanvas python-xdg python python-support blender inkscape 
openshot:
  Installiert:           1.4.3-1
  Installationskandidat: 1.4.3-1
  Versionstabelle:
 *** 1.4.3-1 0
        500 http://ch.archive.ubuntu.com/ubuntu/ raring/universe i386 Packages
        100 /var/lib/dpkg/status
gtk2-engines-pixbuf:
  Installiert:           2.24.17-0ubuntu2
  Installationskandidat: 2.24.17-0ubuntu2
  Versionstabelle:
 *** 2.24.17-0ubuntu2 0
        500 http://ch.archive.ubuntu.com/ubuntu/ raring/universe i386 Packages
        100 /var/lib/dpkg/status
fontconfig:
  Installiert:           2.10.2-0ubuntu2
  Installationskandidat: 2.10.2-0ubuntu2
  Versionstabelle:
 *** 2.10.2-0ubuntu2 0
        500 http://ch.archive.ubuntu.com/ubuntu/ raring/main i386 Packages
        100 /var/lib/dpkg/status
librsvg2-common:
  Installiert:           2.36.4-1
  Installationskandidat: 2.36.4-1
  Versionstabelle:
 *** 2.36.4-1 0
        500 http://ch.archive.ubuntu.com/ubuntu/ raring/main i386 Packages
        100 /var/lib/dpkg/status
melt:
  Installiert:           0.8.8-1
  Installationskandidat: 0.8.8-1
  Versionstabelle:
 *** 0.8.8-1 0
        500 http://ch.archive.ubuntu.com/ubuntu/ raring/universe i386 Packages
        100 /var/lib/dpkg/status
python-gtk2:
  Installiert:           2.24.0-3ubuntu1
  Installationskandidat: 2.24.0-3ubuntu1
  Versionstabelle:
 *** 2.24.0-3ubuntu1 0
        500 http://ch.archive.ubuntu.com/ubuntu/ raring/main i386 Packages
        100 /var/lib/dpkg/status
python-httplib2:
  Installiert:           0.7.7-1ubuntu0.1
  Installationskandidat: 0.7.7-1ubuntu0.1
  Versionstabelle:
 *** 0.7.7-1ubuntu0.1 0
        500 http://ch.archive.ubuntu.com/ubuntu/ raring-updates/main i386 Packages
        500 http://security.ubuntu.com/ubuntu/ raring-security/main i386 Packages
        100 /var/lib/dpkg/status
     0.7.7-1 0
        500 http://ch.archive.ubuntu.com/ubuntu/ raring/main i386 Packages
python-imaging:
  Installiert:           1.1.7+2.0.0-1ubuntu0.1
  Installationskandidat: 1.1.7+2.0.0-1ubuntu0.1
  Versionstabelle:
 *** 1.1.7+2.0.0-1ubuntu0.1 0
        500 http://ch.archive.ubuntu.com/ubuntu/ raring-updates/main i386 Packages
        100 /var/lib/dpkg/status
     1.1.7+2.0.0-1 0
        500 http://ch.archive.ubuntu.com/ubuntu/ raring/main i386 Packages
python-mlt5:
  Installiert:           0.8.8-1
  Installationskandidat: 0.8.8-1
  Versionstabelle:
 *** 0.8.8-1 0
        500 http://ch.archive.ubuntu.com/ubuntu/ raring/universe i386 Packages
        100 /var/lib/dpkg/status
python-pygoocanvas:
  Installiert:           0.14.1-1ubuntu8
  Installationskandidat: 0.14.1-1ubuntu8
  Versionstabelle:
 *** 0.14.1-1ubuntu8 0
        500 http://ch.archive.ubuntu.com/ubuntu/ raring/main i386 Packages
        100 /var/lib/dpkg/status
python-xdg:
  Installiert:           0.25-2
  Installationskandidat: 0.25-2
  Versionstabelle:
 *** 0.25-2 0
        500 http://ch.archive.ubuntu.com/ubuntu/ raring/main i386 Packages
        100 /var/lib/dpkg/status
python:
  Installiert:           2.7.4-0ubuntu1
  Installationskandidat: 2.7.4-0ubuntu1
  Versionstabelle:
 *** 2.7.4-0ubuntu1 0
        500 http://ch.archive.ubuntu.com/ubuntu/ raring/main i386 Packages
        100 /var/lib/dpkg/status
python-support:
  Installiert:           1.0.15
  Installationskandidat: 1.0.15
  Versionstabelle:
 *** 1.0.15 0
        500 http://ch.archive.ubuntu.com/ubuntu/ raring/universe i386 Packages
        100 /var/lib/dpkg/status
blender:
  Installiert:           2.66a-3ubuntu1
  Installationskandidat: 2.66a-3ubuntu1
  Versionstabelle:
 *** 2.66a-3ubuntu1 0
        500 http://ch.archive.ubuntu.com/ubuntu/ raring/universe i386 Packages
        100 /var/lib/dpkg/status
inkscape:
  Installiert:           0.48.4-0.1ubuntu2
  Installationskandidat: 0.48.4-0.1ubuntu2
  Versionstabelle:
 *** 0.48.4-0.1ubuntu2 0
        500 http://ch.archive.ubuntu.com/ubuntu/ raring/main i386 Packages
        100 /var/lib/dpkg/status

** Affects: openshot (Ubuntu)
     Importance: Undecided
         Status: New

-- 
You received this bug notification because you are a member of OpenShot
Developers, which is subscribed to openshot in Ubuntu.
https://bugs.launchpad.net/bugs/1223555

Title:
  OpenShot Crash at videospeed x5 / x10 / ...

Status in “openshot” package in Ubuntu:
  New

Bug description:
  Hello together,

  Is i play the preview or render the project openshot crashes with the error:
  python: /build/buildd/libav-extra-0.8.6ubuntu2/libav/libavutil/mathematics.c:80: av_rescale_rnd: Zusicherung »b >=0« nicht erfüllt.
  (means: b>=0 is not met)

  found same error here:
  http://forum.ubuntuusers.de/topic/openshot-stuerzt-bei-dreifacher-geschwindigkei/#post-5642922

  If i speed up a clip and play it, i got a different result than expectet. Just some pictures from the clip, but not the faster clip.
  Is there a problem with the lib?

  Thanks for your help
  bernibaerchen

  PS.:
  LSB Version:	core-2.0-ia32:core-2.0-noarch:core-3.0-ia32:core-3.0-noarch:core-3.1-ia32:core-3.1-noarch:core-3.2-ia32:core-3.2-noarch:core-4.0-ia32:core-4.0-noarch

  apt-cache policy openshot
  openshot:
    Installiert:           1.4.3-1
    Installationskandidat: 1.4.3-1
    Versionstabelle:
   *** 1.4.3-1 0
          500 http://ch.archive.ubuntu.com/ubuntu/ raring/universe i386 Packages
          100 /var/lib/dpkg/status

  apt-cache policy openshot gtk2-engines-pixbuf fontconfig librsvg2-common melt python-gtk2 python-httplib2 python-imaging python-mlt5 python-pygoocanvas python-xdg python python-support blender inkscape 
  openshot:
    Installiert:           1.4.3-1
    Installationskandidat: 1.4.3-1
    Versionstabelle:
   *** 1.4.3-1 0
          500 http://ch.archive.ubuntu.com/ubuntu/ raring/universe i386 Packages
          100 /var/lib/dpkg/status
  gtk2-engines-pixbuf:
    Installiert:           2.24.17-0ubuntu2
    Installationskandidat: 2.24.17-0ubuntu2
    Versionstabelle:
   *** 2.24.17-0ubuntu2 0
          500 http://ch.archive.ubuntu.com/ubuntu/ raring/universe i386 Packages
          100 /var/lib/dpkg/status
  fontconfig:
    Installiert:           2.10.2-0ubuntu2
    Installationskandidat: 2.10.2-0ubuntu2
    Versionstabelle:
   *** 2.10.2-0ubuntu2 0
          500 http://ch.archive.ubuntu.com/ubuntu/ raring/main i386 Packages
          100 /var/lib/dpkg/status
  librsvg2-common:
    Installiert:           2.36.4-1
    Installationskandidat: 2.36.4-1
    Versionstabelle:
   *** 2.36.4-1 0
          500 http://ch.archive.ubuntu.com/ubuntu/ raring/main i386 Packages
          100 /var/lib/dpkg/status
  melt:
    Installiert:           0.8.8-1
    Installationskandidat: 0.8.8-1
    Versionstabelle:
   *** 0.8.8-1 0
          500 http://ch.archive.ubuntu.com/ubuntu/ raring/universe i386 Packages
          100 /var/lib/dpkg/status
  python-gtk2:
    Installiert:           2.24.0-3ubuntu1
    Installationskandidat: 2.24.0-3ubuntu1
    Versionstabelle:
   *** 2.24.0-3ubuntu1 0
          500 http://ch.archive.ubuntu.com/ubuntu/ raring/main i386 Packages
          100 /var/lib/dpkg/status
  python-httplib2:
    Installiert:           0.7.7-1ubuntu0.1
    Installationskandidat: 0.7.7-1ubuntu0.1
    Versionstabelle:
   *** 0.7.7-1ubuntu0.1 0
          500 http://ch.archive.ubuntu.com/ubuntu/ raring-updates/main i386 Packages
          500 http://security.ubuntu.com/ubuntu/ raring-security/main i386 Packages
          100 /var/lib/dpkg/status
       0.7.7-1 0
          500 http://ch.archive.ubuntu.com/ubuntu/ raring/main i386 Packages
  python-imaging:
    Installiert:           1.1.7+2.0.0-1ubuntu0.1
    Installationskandidat: 1.1.7+2.0.0-1ubuntu0.1
    Versionstabelle:
   *** 1.1.7+2.0.0-1ubuntu0.1 0
          500 http://ch.archive.ubuntu.com/ubuntu/ raring-updates/main i386 Packages
          100 /var/lib/dpkg/status
       1.1.7+2.0.0-1 0
          500 http://ch.archive.ubuntu.com/ubuntu/ raring/main i386 Packages
  python-mlt5:
    Installiert:           0.8.8-1
    Installationskandidat: 0.8.8-1
    Versionstabelle:
   *** 0.8.8-1 0
          500 http://ch.archive.ubuntu.com/ubuntu/ raring/universe i386 Packages
          100 /var/lib/dpkg/status
  python-pygoocanvas:
    Installiert:           0.14.1-1ubuntu8
    Installationskandidat: 0.14.1-1ubuntu8
    Versionstabelle:
   *** 0.14.1-1ubuntu8 0
          500 http://ch.archive.ubuntu.com/ubuntu/ raring/main i386 Packages
          100 /var/lib/dpkg/status
  python-xdg:
    Installiert:           0.25-2
    Installationskandidat: 0.25-2
    Versionstabelle:
   *** 0.25-2 0
          500 http://ch.archive.ubuntu.com/ubuntu/ raring/main i386 Packages
          100 /var/lib/dpkg/status
  python:
    Installiert:           2.7.4-0ubuntu1
    Installationskandidat: 2.7.4-0ubuntu1
    Versionstabelle:
   *** 2.7.4-0ubuntu1 0
          500 http://ch.archive.ubuntu.com/ubuntu/ raring/main i386 Packages
          100 /var/lib/dpkg/status
  python-support:
    Installiert:           1.0.15
    Installationskandidat: 1.0.15
    Versionstabelle:
   *** 1.0.15 0
          500 http://ch.archive.ubuntu.com/ubuntu/ raring/universe i386 Packages
          100 /var/lib/dpkg/status
  blender:
    Installiert:           2.66a-3ubuntu1
    Installationskandidat: 2.66a-3ubuntu1
    Versionstabelle:
   *** 2.66a-3ubuntu1 0
          500 http://ch.archive.ubuntu.com/ubuntu/ raring/universe i386 Packages
          100 /var/lib/dpkg/status
  inkscape:
    Installiert:           0.48.4-0.1ubuntu2
    Installationskandidat: 0.48.4-0.1ubuntu2
    Versionstabelle:
   *** 0.48.4-0.1ubuntu2 0
          500 http://ch.archive.ubuntu.com/ubuntu/ raring/main i386 Packages
          100 /var/lib/dpkg/status

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