motion tracker crash blender #38281
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Reference: blender/blender#38281
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System Information
Windows 8.1 64bit, 16GB RAM, i7 3770 CPU
Blender Version
Broken: official release 2.69, ..., blender-2.69-96e9c67-win64-vc12.zip
Worked: unknown
Short description of error
blender crashes at random positions during motion tracking.
tested with MP4, AVI, PNG as clip
Exact steps for others to reproduce the error
often, blender crashs at random positions - specially with many feature points.
tested with PNG-image sequence (high quality), MP4 (pure quality), AVI (x264, lossless)
video that shows how blender crashs
(by mistake that video shows 3 times the same blender build, but to me, official release 2.69, ..., blender-2.69-96e9c67-win64-vc12.zip are broken):
issue_-_motion_tracking.mp4
clip to track motion:
0001-2654.mp4
test scene to render the video clip (it is not a blend file to show the issue! it is only to generate the video clip in high quality):
test_-_video_clip.blend
Changed status to: 'Open'
Added subscriber: @beta-tester
1>log1.txt log1.txt
2>log2.txt log2.txt
blender.crash.txt blender.crash.txt
in the post from 2014-01-19 01:32:38
i uploaded a wrong log file... here is a one with a crash
log1.txt (by using 'blender-2.69-fd0b104-win64.zip')
BTW.: under linux ubuntu 13.10 and 'blender-2.69-7436a3f-linux-glibc211-x86_64.tar.bz2' (on the same hardware environment), the clip was tracked without crash.
Is there anything usable in
C:\Users\John\AppData\Local\Temp\blender.crash.txt
after the crash?Added subscriber: @ThomasDinges
Couldn't actually reproduce the issue. Does it depend on file format, resolution and number of tracks being tracked?
@ThomasDinges, mind checking this on your computer?
Added subscriber: @Sergey
@Sergey: unfortunately no, in the blender.crash.txt is nothing usefully that would point to the cause of the crash.
i have a second computer with exact the same hardware, but different GPU - on that computer blender crash as well.
and my third, my business laptop (i Core2 Duo T7500, 4GB, Windows 7 64bit SP1, )
what i exactly was doing:
(the crash happens on different frames from computer to computer and sometimes from try to try)
on my business laptop is tried to attach the debugger of VisualStudio 2010 to a running blender process and processed all the above steps...
but blender closes and the debugger could not catch any exception - maybe i did something wrong - Native code (debugging) is not my favorit part.
except of some Access violation writing location during UI i got nothing
"First-chance exception at 0x00000000140913aa in blender.exe_ 0cC0000005: Access violation writing location 0x0000000003cdcf68."
"First-chance exception at 0x068415e9 (nvoglv64.dll) in blender.exe_ 0cC0000005: Access violation writing location 0x0000000003cdceb4."
Added subscriber: @soderlind
I can confirm the same crash on my computer. It happens exactly as described in first post. I did some tests on different versions of blender, both 32-bit and 64-bit.
Blender version 2.66a and older seems to work.
Blender version 2.67 and later crashes.
My system:
Windows 7 64-bit, 16GB RAM, i7-4770 CPU using Intel HD Graphics 4600
I also tried other lower resolution png-sequences only about 350 frames long. They could crash too but I had to use many more markers before it happened. Prefetching the frames seemed to help at first but after some tries it also crashed.
Changing Memory Cache Limit in preferences didn't seem to make any difference.
One thing I noticed when tracking the attached test-file, was that Blender version 2.67 and later would track fast in the beginning then slower and slower (like 4 frames a second) then not update the screen for a few seconds and then suddenly jump forward hundreds of frames having tracked all frames correctly but very much faster during the freeze. Don't know if it's related to this bug.
Hope this helps to narrow it down.
Does anyone noticed memory usages of blender? Does it run out of memory or so?
@Sergey: no, not on my three computers.
i can not observe any abnormal or extensive memory usage on my computer.
on the tiniest laptop with 4GB RAM, blender uses ~1GB during tracking.
the memory usage follows a normal loading curve with saturation at ~1GB usage long before blender will crash.
I've committed a fix (
910f4df
) which potentially fixes this bug. Please grab a build which includes this fix and give it a try.I tried the latest build from buildbot (blender-2.69-b096845, both 32 and 64 bit) and did some quick tests. Everything is working fine here. It doesn't crash anymore and the occasional freezing of the screen issue I mentioned earlier seems to have been fixed as well. Thanks.
Changed status from 'Open' to: 'Resolved'
Coolie! Closing the report then :)
yes, i can confirm, blender-2.69-b096845-win64.zip works well... thanks!