shm elements : Stream corruption

[adrien_sch]

Hello guys,

I want to share a encoded stream between different process but unfortunately
it seems that the stream is corrupted between the two process, or I'm doing
something wrong, or it is simply not possible (but nothing is impossible :)
). Other information : I could observe the same thing with a raw image
stream when my platform is overloaded (cpu near 100%).

I'm stuck, so thx a lot for your help. 

Video sample : 
http://www.axis.com/movies/products/p5534_low.mp4

Provider side : 
gst-launch-1.0 filesrc location=/home/memphis/samples/axis_p5534_mpeg4.mp4 !
qtdemux ! mpeg4videoparse ! shmsink socket-path=/tmp/test_socket
wait-for-connection=FALSE shm-size=1000000 sync=TRUE
enable-last-sample=FALSE async=FALSE

Client side :  
gst-launch-1.0 shmsrc socket-path=/tmp/test_socket is-live=TRUE !
video/mpeg, mpegversion=\(int\)4, systemstream=\(boolean\)false,
profile=\(string\)simple, level=\(string\)1,
codec_data=\(buffer\)000001b001000001b58913000001000000012000c48d8800cd1e04439443000001b24c61766335312e34302e34,
width=\(int\)960, height=\(int\)540, pixel-aspect-ratio=\(fraction\)1/1,
parsed=\(boolean\)true ! decodebin ! videoconvert ! xvimagesink sync=FALSE
async=FALSE

Gstreamer debug output : 
0:00:00.098379327 24167      0x1cd9190 ERROR                  libav :0::
warning: first frame is no keyframe
0:00:00.098418298 24167      0x1cd9190 WARN                   libav
gstavviddec.c:688:gst_ffmpegviddec_get_buffer:<avdec_mpeg4-0> already
alloc'ed output buffer for frame
0:00:00.098432002 24167      0x1cd9190 ERROR                  libav :0::
get_buffer() failed (-1 0 (nil))
0:00:00.098461756 24167      0x1cd9190 WARN                   libav
gstavviddec.c:1320:gst_ffmpegviddec_frame:<avdec_mpeg4-0> avdec_mpeg4:
decoding error (len: -1, have_data: 1)
0:00:00.162553625 24167      0x1cd9190 ERROR                  libav :0::
ac-tex damaged at 59 33
0:00:00.162627415 24167      0x1cd9190 ERROR                  libav :0::
Error at MB: 2072
0:00:00.162777782 24167      0x1cd9190 ERROR                  libav :0::
marker does not match f_code
0:00:00.241265907 24167      0x1cd9190 ERROR                  libav :0::
ac-tex damaged at 59 33
0:00:00.241338865 24167      0x1cd9190 ERROR                  libav :0::
Error at MB: 2072
0:00:00.241440723 24167      0x1cd9190 ERROR                  libav :0::
marker does not match f_code
0:00:00.320947336 24167      0x1cd9190 ERROR                  libav :0::
ac-tex damaged at 59 33
0:00:00.321020642 24167      0x1cd9190 ERROR                  libav :0::
Error at MB: 2072
0:00:00.321055952 24167      0x1cd9190 ERROR                  libav :0::
marker does not match f_code
0:00:00.321158437 24167      0x1cd9190 ERROR                  libav :0::
marker does not match f_code
0:00:00.440814670 24167      0x1cd9190 ERROR                  libav :0::
ac-tex damaged at 59 33
0:00:00.440922875 24167      0x1cd9190 ERROR                  libav :0::
Error at MB: 2072
0:00:00.440959758 24167      0x1cd9190 ERROR                  libav :0::
marker does not match f_code





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