ffmpegthumbnailer gives Segmentation fault on avi files

[MrDini123]

Hi,

I have an ARMv5 NAS, and I decided to compile this nice tool to it. Because I am working on a script which generates thumbs automagically for every video files.

But, because I have old 2.1.8 FFmpeg version installed, the latest release of ffthumbnailer miss the libavutil/display.h header file. So, finally, I compiled the ffmpegthumbnailer 2.1.1 and packaged that. And it works like a charm with mkvs, but with avi files, it gives this:

[mp3 @ 0x17f70] Header missing
Segmentation fault

Or this:

[mpeg4 @ 0x1d120] Video uses a non-standard and wasteful way to store B-frames ('packed B-frames'). Consider using a tool like VirtualDub or avidemux to fix it.
Aborted

Or simply a segfault:

Segmentation fault (Core dumped)

Okay, for the details of the segfault, I called the help of the GNU debugger, and it said this:

(gdb) run -i ./test.avi -o /tmp/test.jpg
Starting program: /usr/local/zy-pkgs/ffproot/ffp/bin/ffmpegthumbnailer -i ./test.avi -o /tmp/test.jpg
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/ffp/lib/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x4116d1ac in free () from /ffp/lib/libc.so.0

And a backtrace:

(gdb) bt
#0  0x4116d1ac in free () from /ffp/lib/libc.so.0
#1  0x40eb723c in av_freep () from /ffp/lib/libavutil.so.52
#2  0x40ea73f0 in av_buffer_unref () from /ffp/lib/libavutil.so.52
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

"Too" informative, isn't it? :D

What Can I do?

Many thanks!

[dirkvdb]

Does it work when you create a thumbnail using regular ffmpeg? ffmpeg -i test.avi -ss 00:00:10 -vframes 1 /tmp/test.jpg

[MrDini123]

Yes, it is.

[dirkvdb]

Can you provide me the video file then so I can analyse it?

[MrDini123]

Thanks for the quick reply!

Unfortunately, all avi files, that I tested gave a segfault or Aborted text.

For example this video gave me segfault:

http://download.blender.org/peach/bigbuckbunny_movies/big_buck_bunny_480p_stereo.avi

[dirkvdb]

I can't reproduce the crash. I just compiled version 2.1.0 on an armv7 bit it works correctly. I do have a much newer ffmpeg (3.2.2)

[MrDini123]

Wow, thanks for the tip. I just tried to compile and install the ffthumbnailer 2.1.0 and it works very well! :) Maybe the 2.1.1 buggy on my system...