Motion Tracking 20x Slower Under Standard Windows Build vs MinGW or Mac OS or Linux #34299

New Issue

Dan Melchione · 2013-02-18T09:14:42+01:00

Dan Melchione commented

2013-02-18 09:14:42 +01:00

%%%--- Operating System, Graphics card ---
Windows 8 x64

- Blender version with error, and version that worked ---

2.66 and 2.65a both Windows 64 and 32 bit have this issue. OSX, Linux, and experimental mingw all seem ok.

- Short description of error ---

Motion tracking seems to be about 20x+ slower on Windows 8 (don't have a different version to test). I tried using a Mac Mini using both OS X and Windows 8 x64 with boot camp.

I also tested on a regular Windows laptop and motion tracking in windows is very very slow on it as well. Under Ubuntu 12.10 Linux on the same laptop motion tracking is fine.

I tried both 32 bit and 64 bit 2.65a and the new 2.66. Motion tracking in windows for all of them is too slow to be useable. Tried the mingw experimental release and it seems to run at normal speed.

- Steps for others to reproduce the error (preferably based on attached .blend file) ---

Track a video with Windows vs OSX, Linux, or even the experimental mingw release. The windows build is much slower at tracking.

%%%

%%%--- Operating System, Graphics card --- Windows 8 x64 - Blender version with error, and version that worked --- 2.66 and 2.65a both Windows 64 and 32 bit have this issue. OSX, Linux, and experimental mingw all seem ok. - Short description of error --- Motion tracking seems to be about 20x+ slower on Windows 8 (don't have a different version to test). I tried using a Mac Mini using both OS X and Windows 8 x64 with boot camp. I also tested on a regular Windows laptop and motion tracking in windows is very very slow on it as well. Under Ubuntu 12.10 Linux on the same laptop motion tracking is fine. I tried both 32 bit and 64 bit 2.65a and the new 2.66. Motion tracking in windows for all of them is too slow to be useable. Tried the mingw experimental release and it seems to run at normal speed. - Steps for others to reproduce the error (preferably based on attached .blend file) --- Track a video with Windows vs OSX, Linux, or even the experimental mingw release. The windows build is much slower at tracking. %%%

Dan Melchione commented

2013-02-18 09:14:42 +01:00

Changed status to: 'Open'

Dan Melchione commented

2013-02-18 09:23:22 +01:00

%%%libmv seems to be compiled with optimizations disabled:

In bf-blender/trunk/blender/extern/libmv/CMakeLists.txt:
if(MSVC)
set(MSVC_OFLAGS O1 O2 Ox)
foreach(FLAG ${MSVC_OFLAGS})
string(REPLACE "${FLAG}" "Od" CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}")
string(REPLACE "${FLAG}" "Od" CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO}")
endforeach()
endif()%%%

%%%libmv seems to be compiled with optimizations disabled: In bf-blender/trunk/blender/extern/libmv/CMakeLists.txt: if(MSVC) set(MSVC_OFLAGS O1 O2 Ox) foreach(FLAG ${MSVC_OFLAGS}) string(REPLACE "${FLAG}" "Od" CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}") string(REPLACE "${FLAG}" "Od" CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO}") endforeach() endif()%%%

Sergey Sharybin commented

2013-02-18 11:50:45 +01:00

%%%We disable optimization because of some bug in MSVC optimizer which ruins how SSBA library works. But there's no reason to disable optimization for Ceres, which is fixed in svn rev54623.

However, this could not be a culptrit of fficial releases which are built using SCons which wasn't affected by this issue.

Further, i did tests on my laptop with Windows 7 64bit using 2.65a and 2.66-RC and both of them are just as fast as linux builds on tracking. It could be something specific for Windows 8 crap, but i don't have it here to test.

Dan, it's not clear for me which Windows version was o nlaptop you've tested?%%%

%%%We disable optimization because of some bug in MSVC optimizer which ruins how SSBA library works. But there's no reason to disable optimization for Ceres, which is fixed in svn rev54623. However, this could not be a culptrit of fficial releases which are built using SCons which wasn't affected by this issue. Further, i did tests on my laptop with Windows 7 64bit using 2.65a and 2.66-RC and both of them are just as fast as linux builds on tracking. It could be something specific for Windows 8 crap, but i don't have it here to test. Dan, it's not clear for me which Windows version was o nlaptop you've tested?%%%

Thomas Dinges commented

2013-02-18 16:25:07 +01:00

%%%20x slowdown seems unrealistic to me? I tested with some scenes here ( Full HD mov files from a Canon DSLR) and it runs at a reasonable speed. %%%

Thomas Dinges commented

2013-02-19 00:58:01 +01:00

%%%Will close this report now for the following reasons.

Neither Sergey nor I could confirm any slowdown on Windows.
20x seems quite exaggerated.

Without further details nor a test scene with the tracking footage, there is not much we can do.%%%

%%%Will close this report now for the following reasons. 1) Neither Sergey nor I could confirm any slowdown on Windows. 2) 20x seems quite exaggerated. Without further details nor a test scene with the tracking footage, there is not much we can do.%%%

Dan Melchione commented

2013-02-19 08:07:22 +01:00

%%%Okay, did a timing test with the attached .blend file file against http://cdn.hollywoodcamerawork.us/plates/objecttracking/hcw_blaster_walk.zip
Windows x64 (2.65.0 r53189): 75 seconds for the first 10 frames
mingw (2.65.10 r25419): 3 seconds for the first 10 frames%%%

%%%Okay, did a timing test with the attached .blend file file against http://cdn.hollywoodcamerawork.us/plates/objecttracking/hcw_blaster_walk.zip Windows x64 (2.65.0 r53189): 75 seconds for the first 10 frames mingw (2.65.10 r25419): 3 seconds for the first 10 frames%%%

Dan Melchione commented

2013-02-19 08:09:47 +01:00

%%%Windows 8 x64 on two different windows laptops and a mac mini. My wife's machine can dual boot into windows 7, so I'll try that and report how it goes.%%%

Dan Melchione commented

2013-02-19 08:19:03 +01:00

%%%P.S. The only thing different I think I can note (other than Windows 8 x64, I will check against a Win7 machine soon) is I used the fast motion preset which has a bigger search area than the default and have 6 different points being tracked which might be more cpu intensive than what you tested with?%%%