OpenShot crashes when editing then moving or playing clips

[Gannin]

I'm using OpenShot 1.4.3. This occurs both in Ubuntu 12.10 and Ubuntu 13.04.

Often, if I edit a clip, either by cutting it or moving it, and then I try to move the cursor or I click play, OpenShot will crash. This happens almost every single time.

And every time it crashes, the error message on the console is:

*** Error in `/usr/bin/python': corrupted double-linked list: 0x00007f1c152181f0 ***

[Gannin (spacesword)]

This time I got a new error message:

*** Error in `/usr/bin/python': free(): corrupted unsorted chunks: 0x00007f1f88b733a0 ***

[Olivier Girard (eolinwen)]

What do you have when you are using this FAQ : https://answers.launchpad.net/openshot/+faq/983
And give the model of this FAQ too : https://answers.launchpad.net/openshot/+faq/2197
Thnaks.

[Christian J. (chrjae)]

I'm seeing the same: very often (pretty much guaranteed after just a couple cuts and moves when using AVI files of about 20-200 MB size, although I couldn't reproduce it with an .avi file of just ~7.8 MB size) it crashes with a segfault after having printed (at least the time when I captured this particular output):

*** Error in `/usr/bin/python': corrupted double-linked list: 0x00007fffa0305b90 ***

More details about my configuration (openshot, library, OS version) plus backtrace see attached file.

The segfault does *not* seem to happen when editing a (2.5 GB) .mpeg file that was written by OpenShot (it was created by merging together a .ogg sound file that was generated by oggenc and a .dvd video file that was generated by mencoder tv:// ... -nosound), but happens unavoidably when editing .avi files that were generated directly by mencoder tv:// with sound. I think the mencoder command line for the latter was (sans the newlines):

mencoder
tv:// -tv driver=v4l2:device="$VIDEODEV":alsa:adevice="$MANGLEDAUDIOINPUTDEV":amode=1:audiorate=48000:forceaudio:immediatemode=0
-really-quiet
-noskip
-of lavf -lavfopts format=avi
-oac lavc -lavcopts acodec=libmp3lame:abitrate=320
-ovc lavc -lavcopts vcodec=mpeg4:vqmin=1:vqmax=4:lmin=1.0:lmax=4.0:mblmin=1.0:mblmax=4.0:vrc_minrate=1:keyint=100:vmax_b_frames=1
-o "$VIDEOPATH"

Would it help to use matroska instead of avi? (I'll have to upgrade mencoder to try that.)

I tested the video file that I used most to test the crashes with ffplay (left and right arrow works fine), melt (h and l work fine), and:

$ ffmpeg -i "pool table-1.avi"
ffmpeg version 0.8.10-6:0.8.10-0ubuntu0.13.10.1, Copyright (c) 2000-2013 the Libav developers
  built on Feb 6 2014 20:53:28 with gcc 4.8.1
*** THIS PROGRAM IS DEPRECATED ***
This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
Input #0, avi, from 'pool table-1.avi':
  Metadata:
    encoder : Lavf53.21.1
  Duration: 00:02:03.12, start: 0.000000, bitrate: 3053 kb/s
    Stream #0.0: Video: mpeg4 (Advanced Simple Profile), yuv420p, 640x480 [PAR 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc
    Stream #0.1: Audio: mp3, 48000 Hz, stereo, s16, 320 kb/s
At least one output file must be specified
$

Should I use matroska instead of avi, or should I install some other, bleeding edge, OS? Or mpeg? (I didn't manage to get both sound and video in the same mpeg video file directly from mencoder, but perhaps newer versions of mencoder would do? Or does the mpeg work just because OpenShot generated it itself?)

BTW here's the GUI program that I wrote to record the video files, from old video tapes: https://github.com/pflanze/recordvideo

[Christian J. (chrjae)]

forgot the attachment

[Martynas (martynas-margis)]

Having same error. Need any info i should/could provide?

[Olivier Girard (eolinwen)]

Sorry for the delay but we are working on Openshot Qt and like we are not
numerous to be here.............Our free time is not extensible......

>>>BTW here's the GUI program that I wrote to record the video files, from
old video tapes: https://github.com/pflanze/recordvideo

Interesting. I'll test it soon I will got the time for........but not now.

>>>Should I use matroska instead of avi, or should I install some other,
bleeding edge, OS? Or mpeg? (I didn't manage to get both sound and video
in the same mpeg video file directly from mencoder, but perhaps newer
versions of mencoder would do? Or does the mpeg work just because
OpenShot generated it itself?)

Perhaps matroska could be better than avi but I don't know. Do you have
tried ?
OS generate none format or codec. That's the work of ffmeg or libav for you
and MLT.

I'm not sure you have all packages of mlt in the 0.8.8 version. Could you
check ? Take a look at this FAQ:
https://answers.launchpad.net/openshot/+faq/1861

BTW Nice debug file.

Thanks.

2014-03-06 13:24 GMT+01:00 Martynas <email address hidden>:

> Having same error. Need any info i should/could provide?
>
> --
> 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/1222067
>
> Title:
> OpenShot crashes when editing then moving or playing clips
>
> Status in OpenShot Video Editor:
> New
>
> Bug description:
> I'm using OpenShot 1.4.3. This occurs both in Ubuntu 12.10 and Ubuntu
> 13.04.
>
> Often, if I edit a clip, either by cutting it or moving it, and then I
> try to move the cursor or I click play, OpenShot will crash. This
> happens almost every single time.
>
> And every time it crashes, the error message on the console is:
>
> *** Error in `/usr/bin/python': corrupted double-linked list:
> 0x00007f1c152181f0 ***
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/openshot/+bug/1222067/+subscriptions
>
> --
> Mailing list: https://launchpad.net/~openshot.bugs
> Post to : <email address hidden>
> Unsubscribe : https://launchpad.net/~openshot.bugs
> More help : https://help.launchpad.net/ListHelp
>

--
Olivier
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