Basic FAQ

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==How can I make movies from screenshots?==
==How can I make movies from screenshots?==
Many P/S/G programs (including playerv, playernav, stage, and gazebo) can dump screenshots, and you might want to assemble these screenshots into a movie, for example to include in a presentation. Unfortunately, there is no good (universal) method for animating frames into a movie that will play on all platforms. Some known methods, all of which have pros and cons:  
Many P/S/G programs (including playerv, playernav, stage, and gazebo) can dump screenshots, and you might want to assemble these screenshots into a movie, for example to include in a presentation. Unfortunately, there is no good (universal) method for animating frames into a movie that will play on all platforms. Some known methods, all of which have pros and cons:  
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*On Linux, use mencoder (comes with mplayer). Works great, but the movies it makes generally don't run on Windows machines (some kind of [http://cvresumewriters.com/ resume CV] DIVX problem). Sometimes Windows Media Player will play these movies, but Powerpoint won't let you embed them in a slide (maddening, isn't it?). Encoding with MPEG1 does work, but it looks terrible.  
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*On Linux, use mencoder (comes with mplayer). Works great, but the movies it makes generally don't run on Windows machines (some kind of DIVX problem). Sometimes Windows Media Player will play these movies, but Powerpoint won't let you embed them in a slide (maddening, isn't it?). Encoding with MPEG1 does work, but it looks terrible.  
*On Windows, there is a nice freeware binary called BMP2AVI (google it) that does the trick. Simple, but pretty effective.  
*On Windows, there is a nice freeware binary called BMP2AVI (google it) that does the trick. Simple, but pretty effective.  
*On Windows/OS X, you can pay $30 for the full version of QuickTime, and use that to make your movies. You can generally tweak it so that the movies play on all platforms (QuickTime on Windows and MPlayer on Linux).  
*On Windows/OS X, you can pay $30 for the full version of QuickTime, and use that to make your movies. You can generally tweak it so that the movies play on all platforms (QuickTime on Windows and MPlayer on Linux).  
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==I have a syntax error involving PKG_CHECK_MODULES. What's the fix?==
==I have a syntax error involving PKG_CHECK_MODULES. What's the fix?==
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If you get a syntax error involving PKG_CHECK_MODULES, it is likely that aclocal can't find the pkg.m4 file, which defines this macro. This is common on OS X with Fink, as the pkg-config package puts this file in /sw/share/aclocal, while the standard OS X aclocal program is looking in /usr/share/aclocal. Unfortunately, there is no reliable search path mechanism for aclocal, so the best [http://essaywritingservices.org/index.php essay writing assistance] fix is just to copy (or symlink) /sw/share/aclocal/pkg.m4 to /usr/share/aclocal. This FAQ taken from the [http://www.cs.sfu.ca/research/groups/autonomy Autonomy Lab's] [http://deckard.cs.sfu.ca:8080/Wiki/PkgCheckModules P/S Wiki].  
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If you get a syntax error involving PKG_CHECK_MODULES, it is likely that aclocal can't find the pkg.m4 file, which defines this macro. This is common on OS X with Fink, as the pkg-config package puts this file in /sw/share/aclocal, while the standard OS X aclocal program is looking in /usr/share/aclocal. Unfortunately, there is no reliable search path mechanism for aclocal, so the best fix is just to copy (or symlink) /sw/share/aclocal/pkg.m4 to /usr/share/aclocal. This FAQ taken from the [http://www.cs.sfu.ca/research/groups/autonomy Autonomy Lab's] [http://deckard.cs.sfu.ca:8080/Wiki/PkgCheckModules P/S Wiki].  
==How can I get high data rates from my SICK LMS laser rangefinder?==
==How can I get high data rates from my SICK LMS laser rangefinder?==

Revision as of 13:01, 7 May 2010

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