[GEM-dev] video with alpha in Gem?

Jakub Pišek kubriel at gmail.com
Sat May 25 13:45:10 CEST 2013


yes, i figured out, alpha is not working with gem_filmQT4L.so.

i tried Gmerlin. remember that some time ago it was segfaulting in Gem, 
when loading video, but later i was using gmerlin with mjpeg without any 
problems. gmerlin is still working with mjpeg, but this with pnga is 
segfaulting, then loading video.

i tested more machines with same gmerlin-avdec, Gem, kernel, but Pd 
version differs having different behaviour.

gmerlin-avdecoder 1.2.0-2
GEM: ver: 0.93.git 374f713
Pd 0.45.0test
kernel 3.9.3-1-ARCH

gdb backtrace:
Starting program: /usr/bin/pd -lib Gem -nosound 
/usr/lib/pd/extra/Gem/examples/04.pix/05.film.pd
warning: no loadable sections found in added symbol-file system-supplied 
DSO at 0x7ffff7ffa000
warning: Could not load shared library symbols for linux-vdso.so.1.
Do you need "set solib-search-path" or "set sysroot"?
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New Thread 0x7fffe25ea700 (LWP 10451)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffe25ea700 (LWP 10451)]
0x00007fffeef49d77 in ?? () from /usr/lib/libgmerlin_avdec.so.1
#0  0x00007fffeef49d77 in ?? () from /usr/lib/libgmerlin_avdec.so.1
#1  0x00007fffeeff667a in ?? () from /usr/lib/libgmerlin_avdec.so.1
#2  0x00007fffef24f2a9 in gem::plugins::filmGMERLIN::getFrame() ()
    from /usr/lib/pd/extra/Gem/gem_filmGMERLIN.so
#3  0x00007ffff6671ffd in pix_film::grabThread(void*) () from 
/usr/lib/pd/extra/Gem/Gem.pd_linux
#4  0x00007ffff7185dd2 in start_thread () from /usr/lib/libpthread.so.0
#5  0x00007ffff6cb2ced in clone () from /usr/lib/libc.so.6


on the other machine with Pd 0.44.3test loading video eats all my ram 
resulting freeze, but nothing in backtrace.


should i fill this in bug report?

Jakub



On 25.05.2013 12:00, gem-dev-request at iem.at wrote:
> It is working perfectly here on Ubuntu 13.04, Pd 0.44.3 and Gem 0.93.git
> 374f713 (with gmerlin backend).
> Have you tried to force order with [gemhead 50] for your movie and
> [gemhead 45] for your background ?
> ++
>
> Jack

-- 
http://kubriel.servus.at


-- 
kubriel at servus.at
http://kubriel.servus.at



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