Crash when exporting video

[Christian J.]

When exporting a video using red-bullet -> Profile "Youtube HD", HD 720 25fps, Med, openshot crashes with a segfault.

Here's the backtrace I got by attaching to the running python openshot process with gdb before the crashing:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f76bf0f5700 (LWP 4525)]
__memcmp_ssse3 () at ../sysdeps/x86_64/multiarch/memcmp-ssse3.S:1684
1684 ../sysdeps/x86_64/multiarch/memcmp-ssse3.S: No such file or directory.
(gdb) bt
#0 __memcmp_ssse3 () at ../sysdeps/x86_64/multiarch/memcmp-ssse3.S:1684
#1 0x00007f76e561fd9e in x264_cqm_init ()
   from /usr/lib/x86_64-linux-gnu/libx264.so.123
#2 0x00007f76e568a374 in x264_encoder_open_123 ()
   from /usr/lib/x86_64-linux-gnu/libx264.so.123
#3 0x00007f76e6a3136c in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.53
#4 0x00007f76e6dbc5f5 in avcodec_open2 ()
   from /usr/lib/x86_64-linux-gnu/libavcodec.so.53
#5 0x00007f76e7aa2840 in ?? ()
   from /usr/lib/x86_64-linux-gnu/mlt/libmltavformat.so
#6 0x00007f7707f7bf6e in start_thread (arg=0x7f76bf0f5700)
    at pthread_create.c:311
#7 0x00007f7707ca69cd in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

It does not crash when exporting with some other codec like OGG.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: openshot 1.4.3-1
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.1
Architecture: amd64
Date: Sun Oct 27 14:19:30 2013
InstallationDate: Installed on 2013-10-19 (7 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: openshot
UpgradeStatus: No upgrade log present (probably fresh install)

[Christian J. (chrjae)]

This seems to actually be a bug in libx264* or gcc:
https://bugs.launchpad.net/ubuntu/+source/x264/+bug/1242593
https://bugs.launchpad.net/ubuntu/+source/x264/+bug/1241772

[Christian J. (chrjae)]

This is how to get the fix: in software centre, choose edit -> software sources -> updates -> tick 'pre-released updates', then upgrade the library, I did it on the command line with:

sudo su -
apt-get dist-upgrade
apt-get install libx264-123

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.