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[Bug 1629389] [NEW] Crash with "mmco: unref short failure"

 

Public bug reported:

During a video edit, after some video cuts, editor crash with this debug
(full video can be played without problems into de editor):

#> openshot video.mp4

Added /usr/share/openshot to system path

------------------------- ERROR 1 ------------------------------
Failed to import 'from openshot import main'
Error Message: cannot import name main
----------------------------------------------------------------
--------------------------------
   OpenShot (version 1.4.3)
--------------------------------
Process no longer exists: 2069.  Creating new pid lock file.
Adding files to the watch queue:
/home/user/video.mp4

Detecting formats, codecs, and filters...
---
video_codecs:
  - a64multi
  - a64multi5
  - alias_pix
  - amv
  - apng
  - asv1
  - asv2
  - avrp
  - avui
  - ayuv
  - bmp
  - cinepak
  - cljr
  - dnxhd
  - dpx
  - dvvideo
  - ffv1
  - ffvhuff
  - flashsv
  - flashsv2
  - flv
  - gif
  - h261
  - h263
  - h263p
  - hap
  - huffyuv
  - jpeg2000
  - jpegls
  - ljpeg
  - mjpeg
  - mpeg1video
  - mpeg2video
  - mpeg4
  - msmpeg4v2
  - msmpeg4
  - msvideo1
  - pam
  - pbm
  - pcx
  - pgm
  - pgmyuv
  - png
  - ppm
  - prores
  - prores_aw
  - prores_ks
  - qtrle
  - r10k
  - r210
  - rawvideo
  - roqvideo
  - rv10
  - rv20
  - sgi
  - snow
  - sunrast
  - svq1
  - targa
  - tiff
  - utvideo
  - v210
  - v308
  - v408
  - v410
  - wmv1
  - wmv2
  - xbm
  - xface
  - xwd
  - y41p
  - yuv4
  - zlib
  - zmbv
  - libopenjpeg
  - libschroedinger
  - libtheora
  - libvpx
  - libvpx-vp9
  - libwebp
  - libx264
  - libx264rgb
  - libx265
  - libxvid
...
---
audio_codecs:
  - comfortnoise
  - s302m
  - aac
  - ac3
  - ac3_fixed
  - alac
  - dca
  - eac3
  - flac
  - g723_1
  - mp2
  - mp2fixed
  - nellymoser
  - real_144
  - sonic
  - sonicls
  - tta
  - vorbis
  - wavpack
  - wmav1
  - wmav2
  - pcm_alaw
  - pcm_f32be
  - pcm_f32le
  - pcm_f64be
  - pcm_f64le
  - pcm_mulaw
  - pcm_s8
  - pcm_s8_planar
  - pcm_s16be
  - pcm_s16be_planar
  - pcm_s16le
  - pcm_s16le_planar
  - pcm_s24be
  - pcm_s24daud
  - pcm_s24le
  - pcm_s24le_planar
  - pcm_s32be
  - pcm_s32le
  - pcm_s32le_planar
  - pcm_u8
  - pcm_u16be
  - pcm_u16le
  - pcm_u24be
  - pcm_u24le
  - pcm_u32be
  - pcm_u32le
  - roq_dpcm
  - adpcm_adx
  - g722
  - g726
  - adpcm_ima_qt
  - adpcm_ima_wav
  - adpcm_ms
  - adpcm_swf
  - adpcm_yamaha
  - libgsm
  - libgsm_ms
  - libmp3lame
  - libopus
  - libshine
  - libspeex
  - libtwolame
  - libvorbis
  - libwavpack
...
---
formats:
  - a64
  - ac3
  - adts
  - adx
  - aiff
  - amr
  - apng
  - asf
  - ass
  - ast
  - asf_stream
  - au
  - avi
  - avm2
  - bit
  - caf
  - cavsvideo
  - crc
  - dash
  - data
  - daud
  - dirac
  - dnxhd
  - dts
  - dv
  - eac3
  - f4v
  - ffm
  - ffmetadata
  - filmstrip
  - flac
  - flv
  - framecrc
  - framemd5
  - g722
  - g723_1
  - gif
  - gxf
  - h261
  - h263
  - h264
  - hds
  - hevc
  - hls
  - ico
  - ilbc
  - image2
  - image2pipe
  - ipod
  - ircam
  - ismv
  - ivf
  - jacosub
  - latm
  - lrc
  - m4v
  - md5
  - matroska
  - matroska
  - microdvd
  - mjpeg
  - mlp
  - mmf
  - mov
  - mp2
  - mp3
  - mp4
  - mpeg
  - vcd
  - mpeg1video
  - dvd
  - svcd
  - mpeg2video
  - vob
  - mpegts
  - mpjpeg
  - mxf
  - mxf_d10
  - mxf_opatom
  - null
  - nut
  - oga
  - ogg
  - oma
  - opus
  - alaw
  - mulaw
  - f64be
  - f64le
  - f32be
  - f32le
  - s32be
  - s32le
  - s24be
  - s24le
  - s16be
  - s16le
  - s8
  - u32be
  - u32le
  - u24be
  - u24le
  - u16be
  - u16le
  - u8
  - psp
  - rawvideo
  - rm
  - roq
  - rso
  - rtp
  - rtp_mpegts
  - rtsp
  - sap
  - segment
  - stream_segment,ssegment
  - singlejpeg
  - smjpeg
  - smoothstreaming
  - sox
  - spx
  - spdif
  - srt
  - swf
  - tee
  - 3g2
  - 3gp
  - mkvtimestamp_v2
  - truehd
  - uncodedframecrc
  - vc1
  - vc1test
  - voc
  - w64
  - wav
  - webm
  - webm_dash_manifest
  - webm_chunk
  - webp
  - webvtt
  - wtv
  - wv
  - yuv4mpegpipe
  - alsa
  - caca
  - fbdev
  - opengl
  - oss
  - pulse
  - sdl
  - v4l2
  - xv
...
project state modified
state saved
state saved
on_treeFiles_row_activated
on_mnuPreview_activate
on_mnuRemoveTrack_activate clicked
project state modified
state saved
project state modified
state saved
on_btnZoomIn_clicked
on_btnZoomIn_clicked
on_btnZoomIn_clicked
on_btnZoomIn_clicked
on_btnZoomIn_clicked
on_btnZoomIn_clicked
on_btnZoomIn_clicked
on_btnZoomIn_clicked
on_btnZoomIn_clicked
on_btnZoomIn_clicked
on_btnZoomIn_clicked
on_btnZoomIn_clicked
on_tlbPlay_clicked called with self.GtkToolButton
on_tlbPlay_clicked called with self.GtkToolButton
on_tlbArrow_clicked called with self.GtkRadioToolButton
on_tlbRazor_clicked called with self.GtkRadioToolButton
project state modified
state saved
on_mnuRemoveClip_activate clicked
project state modified
state saved
on_tlbPlay_clicked called with self.GtkToolButton
on_tlbPlay_clicked called with self.GtkToolButton
project state modified
state saved
on_tlbPlay_clicked called with self.GtkToolButton
on_tlbPlay_clicked called with self.GtkToolButton
on_mnuRemoveClip_activate clicked
project state modified
state saved
on_frmMain_key_press_event
on_frmMain_key_press_event
on_tlbUndo_clicked
on_tlbPlay_clicked called with self.GtkToolButton
on_tlbPlay_clicked called with self.GtkToolButton
project state modified
state saved
on_mnuRemoveClip_activate clicked
project state modified
state saved
on_tlbPlay_clicked called with self.GtkToolButton
on_tlbPlay_clicked called with self.GtkToolButton
project state modified
state saved
on_tlbPlay_clicked called with self.GtkToolButton
on_tlbPlay_clicked called with self.GtkToolButton
on_tlbPlay_clicked called with self.GtkToolButton
on_tlbPlay_clicked called with self.GtkToolButton
project state modified
state saved
on_mnuRemoveClip_activate clicked
project state modified
state saved
on_tlbPlay_clicked called with self.GtkToolButton
on_tlbPlay_clicked called with self.GtkToolButton
project state modified
state saved
on_tlbPlay_clicked called with self.GtkToolButton
on_tlbPlay_clicked called with self.GtkToolButton
project state modified
state saved
on_mnuRemoveClip_activate clicked
project state modified
state saved
on_tlbPlay_clicked called with self.GtkToolButton
on_tlbPlay_clicked called with self.GtkToolButton
project state modified
state saved
on_tlbPlay_clicked called with self.GtkToolButton
on_tlbPlay_clicked called with self.GtkToolButton
project state modified
state saved
on_mnuRemoveClip_activate clicked
project state modified
state saved
on_tlbPlay_clicked called with self.GtkToolButton
on_tlbPlay_clicked called with self.GtkToolButton
project state modified
state saved
project state modified
state saved
on_mnuRemoveClip_activate clicked
project state modified
state saved
on_tlbPlay_clicked called with self.GtkToolButton
on_tlbPlay_clicked called with self.GtkToolButton
on_tlbPlay_clicked called with self.GtkToolButton
on_tlbPlay_clicked called with self.GtkToolButton
project state modified
state saved
on_mnuRemoveClip_activate clicked
project state modified
state saved
on_tlbPlay_clicked called with self.GtkToolButton
on_tlbPlay_clicked called with self.GtkToolButton
[h264 @ 0x7f3cfc0f9f60] mmco: unref short failure
[h264 @ 0x7f3cfc0f9f60] mmco: unref short failure
[h264 @ 0x7f3cfc0f9f60] mmco: unref short failure
[h264 @ 0x7f3cfc0f9f60] mmco: unref short failure
[h264 @ 0x7f3cfc0f9f60] mmco: unref short failure
[h264 @ 0x7f3cfc0f9f60] mmco: unref short failure
project state modified
state saved
on_tlbPlay_clicked called with self.GtkToolButton
[h264 @ 0x7f3cfcb9e240] mmco: unref short failure
[h264 @ 0x7f3cfcc34840] AVC: nal size -1426063360
[h264 @ 0x7f3cfcc34840] AVC: nal size -1426063360
[h264 @ 0x7f3cfcc34840] no frame!
[1]    5161 segmentation fault  video.mp4

Video can be played with VLC without problems:

#> vlc video.mp4

VLC media player 2.2.2 Weatherwax (revision 2.2.2-0-g6259d80)
[000000000207d088] core libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
libva info: VA-API version 0.39.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so
libva info: Found init function __vaDriverInit_0_39
libva info: va_openDriver() returns 0
[00007f0e94ca9a78] avcodec decoder: Using OpenGL/VAAPI backend for VDPAU for hardware decoding.

System info:

#> lsb_release -a

LSB Version:  core-9.20160110ubuntu0.2-amd64:core-9.20160110ubuntu0.2-noarch:languages-3.2-amd64:languages-3.2-noarch:languages-4.0-amd64:languages-4.0-noarch:languages-4.1-amd64:languages-4.1-noarch:multimedia-3.2-amd64:multimedia-3.2-noarch:multimedia-4.0-amd64:multimedia-4.0-noarch:multimedia-4.1-amd64:multimedia-4.1-noarch:printing-9.20160110ubuntu0.2-amd64:printing-9.20160110ubuntu0.2-noarch:security-9.20160110ubuntu0.2-amd64:security-9.20160110ubuntu0.2-noarch
Distributor ID: Ubuntu
Description:  Ubuntu 16.04.1 LTS
Release:  16.04
Codename: xenial

#> uname -a

Linux lito-pc 4.4.0-41-generic #61-Ubuntu SMP Tue Sep 27 17:27:48 UTC
2016 x86_64 x86_64 x86_64 GNU/Linux

Architecture: 64 bits
Operating System & version: Ubuntu 16.04.1 LTS
Installation Method: apt-get from official ubuntu repositories
Version of Openshot installed: 1.4.3
BZR Revision used (if any):
MLT/melt version: melt 6.0.0

#> ffmpeg -version

ffmpeg version 2.8.6-1ubuntu2 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.3.1 (Ubuntu 5.3.1-11ubuntu1) 20160311
configuration: --prefix=/usr --extra-version=1ubuntu2 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
libavutil      54. 31.100 / 54. 31.100
libavcodec     56. 60.100 / 56. 60.100
libavformat    56. 40.101 / 56. 40.101
libavdevice    56.  4.100 / 56.  4.100
libavfilter     5. 40.101 /  5. 40.101
libavresample   2.  1.  0 /  2.  1.  0
libswscale      3.  1.101 /  3.  1.101
libswresample   1.  2.101 /  1.  2.101
libpostproc    53.  3.100 / 53.  3.100

** Affects: openshot
     Importance: Undecided
         Status: New

-- 
You received this bug notification because you are a member of OpenShot
Bugs, which is subscribed to OpenShot Video Editor.
https://bugs.launchpad.net/bugs/1629389

Title:
  Crash with "mmco: unref short failure"

Status in OpenShot Video Editor:
  New

Bug description:
  During a video edit, after some video cuts, editor crash with this
  debug (full video can be played without problems into de editor):

  #> openshot video.mp4

  Added /usr/share/openshot to system path

  ------------------------- ERROR 1 ------------------------------
  Failed to import 'from openshot import main'
  Error Message: cannot import name main
  ----------------------------------------------------------------
  --------------------------------
     OpenShot (version 1.4.3)
  --------------------------------
  Process no longer exists: 2069.  Creating new pid lock file.
  Adding files to the watch queue:
  /home/user/video.mp4

  Detecting formats, codecs, and filters...
  ---
  video_codecs:
    - a64multi
    - a64multi5
    - alias_pix
    - amv
    - apng
    - asv1
    - asv2
    - avrp
    - avui
    - ayuv
    - bmp
    - cinepak
    - cljr
    - dnxhd
    - dpx
    - dvvideo
    - ffv1
    - ffvhuff
    - flashsv
    - flashsv2
    - flv
    - gif
    - h261
    - h263
    - h263p
    - hap
    - huffyuv
    - jpeg2000
    - jpegls
    - ljpeg
    - mjpeg
    - mpeg1video
    - mpeg2video
    - mpeg4
    - msmpeg4v2
    - msmpeg4
    - msvideo1
    - pam
    - pbm
    - pcx
    - pgm
    - pgmyuv
    - png
    - ppm
    - prores
    - prores_aw
    - prores_ks
    - qtrle
    - r10k
    - r210
    - rawvideo
    - roqvideo
    - rv10
    - rv20
    - sgi
    - snow
    - sunrast
    - svq1
    - targa
    - tiff
    - utvideo
    - v210
    - v308
    - v408
    - v410
    - wmv1
    - wmv2
    - xbm
    - xface
    - xwd
    - y41p
    - yuv4
    - zlib
    - zmbv
    - libopenjpeg
    - libschroedinger
    - libtheora
    - libvpx
    - libvpx-vp9
    - libwebp
    - libx264
    - libx264rgb
    - libx265
    - libxvid
  ...
  ---
  audio_codecs:
    - comfortnoise
    - s302m
    - aac
    - ac3
    - ac3_fixed
    - alac
    - dca
    - eac3
    - flac
    - g723_1
    - mp2
    - mp2fixed
    - nellymoser
    - real_144
    - sonic
    - sonicls
    - tta
    - vorbis
    - wavpack
    - wmav1
    - wmav2
    - pcm_alaw
    - pcm_f32be
    - pcm_f32le
    - pcm_f64be
    - pcm_f64le
    - pcm_mulaw
    - pcm_s8
    - pcm_s8_planar
    - pcm_s16be
    - pcm_s16be_planar
    - pcm_s16le
    - pcm_s16le_planar
    - pcm_s24be
    - pcm_s24daud
    - pcm_s24le
    - pcm_s24le_planar
    - pcm_s32be
    - pcm_s32le
    - pcm_s32le_planar
    - pcm_u8
    - pcm_u16be
    - pcm_u16le
    - pcm_u24be
    - pcm_u24le
    - pcm_u32be
    - pcm_u32le
    - roq_dpcm
    - adpcm_adx
    - g722
    - g726
    - adpcm_ima_qt
    - adpcm_ima_wav
    - adpcm_ms
    - adpcm_swf
    - adpcm_yamaha
    - libgsm
    - libgsm_ms
    - libmp3lame
    - libopus
    - libshine
    - libspeex
    - libtwolame
    - libvorbis
    - libwavpack
  ...
  ---
  formats:
    - a64
    - ac3
    - adts
    - adx
    - aiff
    - amr
    - apng
    - asf
    - ass
    - ast
    - asf_stream
    - au
    - avi
    - avm2
    - bit
    - caf
    - cavsvideo
    - crc
    - dash
    - data
    - daud
    - dirac
    - dnxhd
    - dts
    - dv
    - eac3
    - f4v
    - ffm
    - ffmetadata
    - filmstrip
    - flac
    - flv
    - framecrc
    - framemd5
    - g722
    - g723_1
    - gif
    - gxf
    - h261
    - h263
    - h264
    - hds
    - hevc
    - hls
    - ico
    - ilbc
    - image2
    - image2pipe
    - ipod
    - ircam
    - ismv
    - ivf
    - jacosub
    - latm
    - lrc
    - m4v
    - md5
    - matroska
    - matroska
    - microdvd
    - mjpeg
    - mlp
    - mmf
    - mov
    - mp2
    - mp3
    - mp4
    - mpeg
    - vcd
    - mpeg1video
    - dvd
    - svcd
    - mpeg2video
    - vob
    - mpegts
    - mpjpeg
    - mxf
    - mxf_d10
    - mxf_opatom
    - null
    - nut
    - oga
    - ogg
    - oma
    - opus
    - alaw
    - mulaw
    - f64be
    - f64le
    - f32be
    - f32le
    - s32be
    - s32le
    - s24be
    - s24le
    - s16be
    - s16le
    - s8
    - u32be
    - u32le
    - u24be
    - u24le
    - u16be
    - u16le
    - u8
    - psp
    - rawvideo
    - rm
    - roq
    - rso
    - rtp
    - rtp_mpegts
    - rtsp
    - sap
    - segment
    - stream_segment,ssegment
    - singlejpeg
    - smjpeg
    - smoothstreaming
    - sox
    - spx
    - spdif
    - srt
    - swf
    - tee
    - 3g2
    - 3gp
    - mkvtimestamp_v2
    - truehd
    - uncodedframecrc
    - vc1
    - vc1test
    - voc
    - w64
    - wav
    - webm
    - webm_dash_manifest
    - webm_chunk
    - webp
    - webvtt
    - wtv
    - wv
    - yuv4mpegpipe
    - alsa
    - caca
    - fbdev
    - opengl
    - oss
    - pulse
    - sdl
    - v4l2
    - xv
  ...
  project state modified
  state saved
  state saved
  on_treeFiles_row_activated
  on_mnuPreview_activate
  on_mnuRemoveTrack_activate clicked
  project state modified
  state saved
  project state modified
  state saved
  on_btnZoomIn_clicked
  on_btnZoomIn_clicked
  on_btnZoomIn_clicked
  on_btnZoomIn_clicked
  on_btnZoomIn_clicked
  on_btnZoomIn_clicked
  on_btnZoomIn_clicked
  on_btnZoomIn_clicked
  on_btnZoomIn_clicked
  on_btnZoomIn_clicked
  on_btnZoomIn_clicked
  on_btnZoomIn_clicked
  on_tlbPlay_clicked called with self.GtkToolButton
  on_tlbPlay_clicked called with self.GtkToolButton
  on_tlbArrow_clicked called with self.GtkRadioToolButton
  on_tlbRazor_clicked called with self.GtkRadioToolButton
  project state modified
  state saved
  on_mnuRemoveClip_activate clicked
  project state modified
  state saved
  on_tlbPlay_clicked called with self.GtkToolButton
  on_tlbPlay_clicked called with self.GtkToolButton
  project state modified
  state saved
  on_tlbPlay_clicked called with self.GtkToolButton
  on_tlbPlay_clicked called with self.GtkToolButton
  on_mnuRemoveClip_activate clicked
  project state modified
  state saved
  on_frmMain_key_press_event
  on_frmMain_key_press_event
  on_tlbUndo_clicked
  on_tlbPlay_clicked called with self.GtkToolButton
  on_tlbPlay_clicked called with self.GtkToolButton
  project state modified
  state saved
  on_mnuRemoveClip_activate clicked
  project state modified
  state saved
  on_tlbPlay_clicked called with self.GtkToolButton
  on_tlbPlay_clicked called with self.GtkToolButton
  project state modified
  state saved
  on_tlbPlay_clicked called with self.GtkToolButton
  on_tlbPlay_clicked called with self.GtkToolButton
  on_tlbPlay_clicked called with self.GtkToolButton
  on_tlbPlay_clicked called with self.GtkToolButton
  project state modified
  state saved
  on_mnuRemoveClip_activate clicked
  project state modified
  state saved
  on_tlbPlay_clicked called with self.GtkToolButton
  on_tlbPlay_clicked called with self.GtkToolButton
  project state modified
  state saved
  on_tlbPlay_clicked called with self.GtkToolButton
  on_tlbPlay_clicked called with self.GtkToolButton
  project state modified
  state saved
  on_mnuRemoveClip_activate clicked
  project state modified
  state saved
  on_tlbPlay_clicked called with self.GtkToolButton
  on_tlbPlay_clicked called with self.GtkToolButton
  project state modified
  state saved
  on_tlbPlay_clicked called with self.GtkToolButton
  on_tlbPlay_clicked called with self.GtkToolButton
  project state modified
  state saved
  on_mnuRemoveClip_activate clicked
  project state modified
  state saved
  on_tlbPlay_clicked called with self.GtkToolButton
  on_tlbPlay_clicked called with self.GtkToolButton
  project state modified
  state saved
  project state modified
  state saved
  on_mnuRemoveClip_activate clicked
  project state modified
  state saved
  on_tlbPlay_clicked called with self.GtkToolButton
  on_tlbPlay_clicked called with self.GtkToolButton
  on_tlbPlay_clicked called with self.GtkToolButton
  on_tlbPlay_clicked called with self.GtkToolButton
  project state modified
  state saved
  on_mnuRemoveClip_activate clicked
  project state modified
  state saved
  on_tlbPlay_clicked called with self.GtkToolButton
  on_tlbPlay_clicked called with self.GtkToolButton
  [h264 @ 0x7f3cfc0f9f60] mmco: unref short failure
  [h264 @ 0x7f3cfc0f9f60] mmco: unref short failure
  [h264 @ 0x7f3cfc0f9f60] mmco: unref short failure
  [h264 @ 0x7f3cfc0f9f60] mmco: unref short failure
  [h264 @ 0x7f3cfc0f9f60] mmco: unref short failure
  [h264 @ 0x7f3cfc0f9f60] mmco: unref short failure
  project state modified
  state saved
  on_tlbPlay_clicked called with self.GtkToolButton
  [h264 @ 0x7f3cfcb9e240] mmco: unref short failure
  [h264 @ 0x7f3cfcc34840] AVC: nal size -1426063360
  [h264 @ 0x7f3cfcc34840] AVC: nal size -1426063360
  [h264 @ 0x7f3cfcc34840] no frame!
  [1]    5161 segmentation fault  video.mp4

  Video can be played with VLC without problems:

  #> vlc video.mp4

  VLC media player 2.2.2 Weatherwax (revision 2.2.2-0-g6259d80)
  [000000000207d088] core libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
  libva info: VA-API version 0.39.0
  libva info: va_getDriverName() returns 0
  libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so
  libva info: Found init function __vaDriverInit_0_39
  libva info: va_openDriver() returns 0
  [00007f0e94ca9a78] avcodec decoder: Using OpenGL/VAAPI backend for VDPAU for hardware decoding.

  System info:

  #> lsb_release -a

  LSB Version:  core-9.20160110ubuntu0.2-amd64:core-9.20160110ubuntu0.2-noarch:languages-3.2-amd64:languages-3.2-noarch:languages-4.0-amd64:languages-4.0-noarch:languages-4.1-amd64:languages-4.1-noarch:multimedia-3.2-amd64:multimedia-3.2-noarch:multimedia-4.0-amd64:multimedia-4.0-noarch:multimedia-4.1-amd64:multimedia-4.1-noarch:printing-9.20160110ubuntu0.2-amd64:printing-9.20160110ubuntu0.2-noarch:security-9.20160110ubuntu0.2-amd64:security-9.20160110ubuntu0.2-noarch
  Distributor ID: Ubuntu
  Description:  Ubuntu 16.04.1 LTS
  Release:  16.04
  Codename: xenial

  #> uname -a

  Linux lito-pc 4.4.0-41-generic #61-Ubuntu SMP Tue Sep 27 17:27:48 UTC
  2016 x86_64 x86_64 x86_64 GNU/Linux

  Architecture: 64 bits
  Operating System & version: Ubuntu 16.04.1 LTS
  Installation Method: apt-get from official ubuntu repositories
  Version of Openshot installed: 1.4.3
  BZR Revision used (if any):
  MLT/melt version: melt 6.0.0

  #> ffmpeg -version

  ffmpeg version 2.8.6-1ubuntu2 Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 5.3.1 (Ubuntu 5.3.1-11ubuntu1) 20160311
  configuration: --prefix=/usr --extra-version=1ubuntu2 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
  libavutil      54. 31.100 / 54. 31.100
  libavcodec     56. 60.100 / 56. 60.100
  libavformat    56. 40.101 / 56. 40.101
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 40.101 /  5. 40.101
  libavresample   2.  1.  0 /  2.  1.  0
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.101 /  1.  2.101
  libpostproc    53.  3.100 / 53.  3.100

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