Hi.

I have a reproducible crash in the avformat consumer with some very specific 
settings:

Crash happens when using an image producer (qimage of pixbuf) AND a brightness 
filter AND any frei0r filter.

Here is the command line that crashes for me:

melt image.png in=0 out=50 -attach-clip brightness out=10 -attach-clip 
frei0r.brightness -consumer avformat:test.mpg

Crash backtrace below, using latest git (crashes also with MLT 0.8) and recent 
FFmpeg.

Regards,

jb
_____________________________________________________

Program received signal SIGSEGV, Segmentation fault.
__GI___libc_free (mem=0xb1dd8020) at malloc.c:2968
2968    malloc.c: No such file or directory.
(gdb) thread apply all bt

Thread 1 (Thread 0xb7dbd6c0 (LWP 3443)):
#0  __GI___libc_free (mem=0xb1dd8020) at malloc.c:2968
#1  0xb7fa33bb in pool_close (self=0x8051bc8) at mlt_pool.c:213
#2  0xb7f905a9 in mlt_property_clear (self=0x8051c10) at mlt_property.c:117
#3  mlt_property_close (self=0x8051c10) at mlt_property.c:719
#4  0xb7f90f3d in mlt_properties_close (self=0x8051030) at 
mlt_properties.c:1327
#5  mlt_properties_close (self=0x8051030) at mlt_properties.c:1298
#6  0xb7fa376d in mlt_pool_close () at mlt_pool.c:392
#7  0xb7fa1c62 in mlt_factory_close () at mlt_factory.c:425
#8  0x08049bf2 in main (argc=12, argv=0xbffff1c4) at melt.c:944


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