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Message #02834
[Bug 890377] Re: Segfault when moving through preview with arrow keys
To check if it really is a problem with MLT, you should try
playing/seeking with your source files using the command line player
melt:
https://answers.launchpad.net/openshot/+faq/983
** Changed in: openshot
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/890377
Title:
Segfault when moving through preview with arrow keys
Status in OpenShot Video Editor:
Incomplete
Bug description:
During editing a rather complex video, I get crashes of Openshot now
and then.
I'm using OpenShot 1.4.0 on Ubuntu 11.04 with libmlt4
0.7.6-0ubuntu0~sunab~natty1
This here is the backtrace I got with gdb:
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffcb6d2700 (LWP 2652)]
__pthread_mutex_lock (mutex=0x6c706d61732e64b1) at pthread_mutex_lock.c:50
50 pthread_mutex_lock.c: Datei oder Verzeichnis nicht gefunden.
in pthread_mutex_lock.c
(gdb) bt
#0 __pthread_mutex_lock (mutex=0x6c706d61732e64b1) at pthread_mutex_lock.c:50
#1 0x00007fffecb49b5d in mlt_properties_find (self=0x5377f90,
name=0x7fffecb5ad30 "in") at mlt_properties.c:488
#2 mlt_properties_get_position (self=0x5377f90, name=0x7fffecb5ad30 "in")
at mlt_properties.c:1001
#3 0x00007fffecb4d9a6 in mlt_service_apply_filters (
self=<value optimized out>, frame=0x21e9fe00, index=1) at mlt_service.c:415
#4 0x00007fffecb4dbce in mlt_service_get_frame (self=0xda9c820,
frame=0x7fffd40b6cc8, index=7) at mlt_service.c:469
#5 0x00007fffecb56031 in transition_get_frame (service=0xdcd3b10,
frame=0x7fffad11f1a0, index=0) at mlt_transition.c:431
#6 0x00007fffecb4db5f in mlt_service_get_frame (self=0xdcd3b10,
frame=0x7fffad11f1a0, index=0) at mlt_service.c:457
#7 0x00007fffecb56031 in transition_get_frame (service=0xda9c520,
frame=0x7fffcb6d1bd8, index=0) at mlt_transition.c:431
#8 0x00007fffecb4db5f in mlt_service_get_frame (self=0xda9c520,
frame=0x7fffcb6d1bd8, index=0) at mlt_service.c:457
#9 0x00007fffecb56749 in producer_get_frame (parent=0xcede460,
frame=0x7fffcb6d1dc8, track=<value optimized out>) at mlt_tractor.c:395
#10 0x00007fffecb4f6a9 in producer_get_frame (service=0xcede460,
frame=0x7fffcb6d1dc8, index=0) at mlt_producer.c:584
---Type <return> to continue, or q <return> to quit---
#11 0x00007fffecb4db5f in mlt_service_get_frame (self=0xcede460,
frame=0x7fffcb6d1dc8, index=0) at mlt_service.c:457
#12 0x00007fffecb4db5f in mlt_service_get_frame (self=0x1d24710,
frame=0x7fffcb6d1dc8, index=0) at mlt_service.c:457
#13 0x00007fffecb53b02 in mlt_consumer_get_frame (self=0x1d24710)
at mlt_consumer.c:547
#14 0x00007fffecb53f82 in consumer_read_ahead_thread (arg=0x1d24710)
at mlt_consumer.c:694
#15 0x00007ffff7bc4d8c in start_thread (arg=0x7fffcb6d2700)
at pthread_create.c:304
#16 0x00007ffff6a8a04d in clone ()
at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#17 0x0000000000000000 in ?? ()
(gdb) bt full
#0 __pthread_mutex_lock (mutex=0x6c706d61732e64b1) at pthread_mutex_lock.c:50
__PRETTY_FUNCTION__ = "__pthread_mutex_lock"
type = <value optimized out>
id = <value optimized out>
#1 0x00007fffecb49b5d in mlt_properties_find (self=0x5377f90,
name=0x7fffecb5ad30 "in") at mlt_properties.c:488
list = 0x6c706d61732e6169
value = 0x0
key = 37
i = <value optimized out>
#2 mlt_properties_get_position (self=0x5377f90, name=0x7fffecb5ad30 "in")
at mlt_properties.c:1001
value = 0x0
#3 0x00007fffecb4d9a6 in mlt_service_apply_filters (
self=<value optimized out>, frame=0x21e9fe00, index=1) at mlt_service.c:415
in = <value optimized out>
out = <value optimized out>
disable = <value optimized out>
i = <value optimized out>
frame_properties = 0x21e9fe00
service_properties = <value optimized out>
---Type <return> to continue, or q <return> to quit---
base = 0xda89c90
position = 0
self_in = 0
self_out = 0
#4 0x00007fffecb4dbce in mlt_service_get_frame (self=0xda9c820,
frame=0x7fffd40b6cc8, index=7) at mlt_service.c:469
properties = 0x21e9fe00
in = 0
out = 0
position = -1
result = <value optimized out>
#5 0x00007fffecb56031 in transition_get_frame (service=0xdcd3b10,
frame=0x7fffad11f1a0, index=0) at mlt_transition.c:431
active = 0
i = 7
a_frame = 0
invalid = 0x7fffecb45600 <mlt_frame_is_test_card>
b_frame = 8
position = <value optimized out>
error = 0
self = 0xdcd3b10
---Type <return> to continue, or q <return> to quit---
properties = 0xdcd3b10
accepts_blanks = 0
a_track = 0
b_track = 8
in = 12588
out = 12635
always_active = 0
type = 1
reverse_order = 0
#6 0x00007fffecb4db5f in mlt_service_get_frame (self=0xdcd3b10,
frame=0x7fffad11f1a0, index=0) at mlt_service.c:457
properties = 0xdcd3b10
in = 12588
out = 12635
position = -1
result = 0
#7 0x00007fffecb56031 in transition_get_frame (service=0xda9c520,
frame=0x7fffcb6d1bd8, index=0) at mlt_transition.c:431
active = 0
i = 0
a_frame = 0
---Type <return> to continue, or q <return> to quit---
invalid = 0x7fffecb45640 <mlt_frame_is_test_audio>
b_frame = 8
position = <value optimized out>
error = 0
self = 0xda9c520
properties = 0xda9c520
accepts_blanks = 0
a_track = 0
b_track = 8
in = 11791
out = 12635
always_active = 1
type = 2
reverse_order = 0
#8 0x00007fffecb4db5f in mlt_service_get_frame (self=0xda9c520,
frame=0x7fffcb6d1bd8, index=0) at mlt_service.c:457
properties = 0xda9c520
in = 11791
out = 12635
position = -1
result = 0
---Type <return> to continue, or q <return> to quit---
#9 0x00007fffecb56749 in producer_get_frame (parent=0xcede460,
frame=0x7fffcb6d1dc8, track=<value optimized out>) at mlt_tractor.c:395
props_count = <value optimized out>
j = <value optimized out>
video = <value optimized out>
label = "\270\320v\255\377\177\000\000}\232\264\354\377\177\000\000>\250\265\354\377\177\000\000\000\000\000\000\000"
id = 0x7fffd653d200 "\260/\002\256\377\177"
frame_properties = 0x7fffd661eef0
audio = <value optimized out>
first_video = <value optimized out>
temp_properties = <value optimized out>
target = <value optimized out>
image_count = <value optimized out>
global_feed = 1
done = <value optimized out>
temp = 0x0
count = <value optimized out>
properties = 0xcede460
i = <value optimized out>
multitrack = <value optimized out>
---Type <return> to continue, or q <return> to quit---
producer = <value optimized out>
data_queue = 0x7fff8bf650f0
self = 0xcede460
#10 0x00007fffecb4f6a9 in producer_get_frame (service=0xcede460,
frame=0x7fffcb6d1dc8, index=0) at mlt_producer.c:584
properties = 0xcede460
eof = <value optimized out>
speed = 0
clone = 0xcede460
result = 1
self = 0xcede460
#11 0x00007fffecb4db5f in mlt_service_get_frame (self=0xcede460,
frame=0x7fffcb6d1dc8, index=0) at mlt_service.c:457
properties = 0xcede460
in = 0
out = 84377
position = 13260
result = 0
#12 0x00007fffecb4db5f in mlt_service_get_frame (self=0x1d24710,
frame=0x7fffcb6d1dc8, index=0) at mlt_service.c:457
properties = 0x1d24710
---Type <return> to continue, or q <return> to quit---
in = 0
out = 0
position = -1
result = 0
#13 0x00007fffecb53b02 in mlt_consumer_get_frame (self=0x1d24710)
at mlt_consumer.c:547
frame = 0x7fffd661eef0
service = 0x1d24710
properties = 0x1d24710
#14 0x00007fffecb53f82 in consumer_read_ahead_thread (arg=0x1d24710)
at mlt_consumer.c:694
time_current = 0
self = 0x1d24710
properties = 0x1d24710
width = 1920
height = 1080
video_off = 0
preview_off = <value optimized out>
preview_format = <value optimized out>
afmt = mlt_audio_pcm
counter = 23617
---Type <return> to continue, or q <return> to quit---
fps = 25
channels = 2
frequency = 48000
samples = 1920
audio = 0x1a01a000
audio_off = 0
buffer = 2
frame = <value optimized out>
image = 0x7fffaed44c20 "+}+\206+}+\206+}+\206+}+\206+}+\206+}*\206)})\206)})\206(}*\206*}+\206,}/\206/|0\207\060{/\207/{.\210.{.\210.{.\210.{,\210,{+\207,{-\207-{*\210){(\207(|%\205!|\037\205\037~\036\204\035\177\033\202\033\200\033\202\034\200\033\202\033\200\033\202\033\200\034\202\034\200\034\202\033\200\033\202\033\200\033\202\036\177\036\202\036\177\035\202\035\177\035\202\035\177\035\202\035\177\035\202\035\177\035\202\036\177\036\202\036\177\036\202\036\177\035\202\035\177\035\202\035\177\035\202\035\177\034\203\034\177\034\203\034\177\035\203\036\177\036\203\036\177\035\203\035\177\035\203\035\177\035\203"...
ante = {tv_sec = 1321297968, tv_usec = 966213}
count = 1
skipped = 0
time_process = 0
skip_next = 0
---Type <return> to continue, or q <return> to quit---
pos = <value optimized out>
start_pos = 13260
last_pos = 13260
frame_duration = 40000
drop_max = 5
#15 0x00007ffff7bc4d8c in start_thread (arg=0x7fffcb6d2700)
at pthread_create.c:304
pd = 0x7fffcb6d2700
now = <value optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140736606316288,
-2960163981755843542, 140737349746176, 140736606316992, 0, 3,
2960259483603401770, 2960146927023127594},
mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0},
data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = 0
robust = <value optimized out>
sp = <value optimized out>
freesize = <value optimized out>
__PRETTY_FUNCTION__ = "start_thread"
#16 0x00007ffff6a8a04d in clone ()
at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
---Type <return> to continue, or q <return> to quit---
No locals.
#17 0x0000000000000000 in ?? ()
No symbol table info available.
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References
