http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56742
--- Comment #13 from at2010 <g63marty at yahoo dot com> --- Hello. I also observed the 64bit compile problem while muxing. And after using the new build the problem is indeed resolved. However I still see a remnant wxwiget error in the logs that you may wish to fix as well. Error is In file /home/mosu/prog/video/mingw/cross-git-all/tmp-wxwidgets/wxWidgets-3.0.0/src/msw/window.cpp at line 576: 'SetFocus' failed with error 0x00000057 (the parameter is incorrect.). This is the pre-fix log. The post-fix log is below. mkvmerge v6.7.0 ('Back to the Ground') 64bit built on Jan 8 2014 15:10:52 'notrealfilename.avi': Using the demultiplexer for the format 'AVI'. 'notrealfilename.avi' track 0: Using the output module for the format 'MPEG-4'. 'notrealfilename.avi' track 1: Using the output module for the format 'AC3'. The file 'notrealfilename (1).mkv' has been opened for writing. Progress: 0% [Fails with return code 3] Output of Debug window: 12:34:22: dpi is 96/96 12:34:22: Querying mkvmerge's capabilities 12:34:23: Capability: VERSION=mkvmerge v6.7.0 ('Back to the Ground') 64bit built on Jan 8 2014 15:10:52 12:34:23: Capability: 12:34:23: Capability: FLAC 12:34:23: Capability: 12:34:23: about to check... btw int? 0 12:34:23: update state changed, now 1 12:34:26: update state changed, now 2 12:34:32: identify 1: command: ``"C:\Program Files (x86)\MKVToolNix\mkvmerge.exe" "@C:\Users\notme\AppData\Local\Temp\mmg-mkvmerge-options-3992-1389731672"'' 12:34:33: identify 1: result: 0 12:34:33: identify 1: output[0]: ``File 'notrealfilename.avi': container: AVI [is_providing_timecodes:1]'' 12:34:33: identify 1: output[1]: ``'' 12:34:33: identify 1: output[2]: ``Track ID 0: video (MPEG-4p2)'' 12:34:33: identify 1: output[3]: ``'' 12:34:33: identify 1: output[4]: ``Track ID 1: audio (AC3/EAC3)'' 12:34:33: identify 1: output[5]: ``'' 12:36:58: Locale selection logic: select_locale English (English) uu_locale_lower en translation_c::get_default_ui_locale() en app->m_ui_locale en 12:37:20: Querying mkvmerge's capabilities 12:37:20: Capability: VERSION=mkvmerge v6.7.0 ('Back to the Ground') 64bit built on Jan 8 2014 15:10:52 12:37:20: Capability: 12:37:20: Capability: FLAC 12:37:20: Capability: In file /home/mosu/prog/video/mingw/cross-git-all/tmp-wxwidgets/wxWidgets-3.0.0/src/msw/window.cpp at line 576: 'SetFocus' failed with error 0x00000057 (the parameter is incorrect.). In file /home/mosu/prog/video/mingw/cross-git-all/tmp-wxwidgets/wxWidgets-3.0.0/src/msw/window.cpp at line 576: 'SetFocus' failed with error 0x00000057 (the parameter is incorrect.). In file /home/mosu/prog/video/mingw/cross-git-all/tmp-wxwidgets/wxWidgets-3.0.0/src/msw/window.cpp at line 576: 'SetFocus' failed with error 0x00000057 (the parameter is incorrect.). In file /home/mosu/prog/video/mingw/cross-git-all/tmp-wxwidgets/wxWidgets-3.0.0/src/msw/window.cpp at line 576: 'SetFocus' failed with error 0x00000057 (the parameter is incorrect.). 12:57:49: dpi is 96/96 12:57:49: Querying mkvmerge's capabilities 12:57:49: Capability: VERSION=mkvmerge v6.7.0 ('Back to the Ground') 64bit built on Jan 8 2014 15:10:52 12:57:49: Capability: 12:57:49: Capability: FLAC 12:57:49: Capability: 12:58:00: identify 1: command: ``"C:\Program Files (x86)\MKVToolNix\mkvmerge.exe" "@C:\Users\Marty\AppData\Local\Temp\mmg-mkvmerge-options-4540-1389733080"'' 12:58:01: identify 1: result: 0 12:58:01: identify 1: output[0]: ``File 'notrealfilename.avi': container: AVI [is_providing_timecodes:1]'' 12:58:01: identify 1: output[1]: ``'' 12:58:01: identify 1: output[2]: ``Track ID 0: video (MPEG-4p2)'' 12:58:01: identify 1: output[3]: ``'' 12:58:01: identify 1: output[4]: ``Track ID 1: audio (AC3/EAC3)'' 12:58:01: identify 1: output[5]: ``'' In file /home/mosu/prog/video/mingw/cross-git-all/tmp-wxwidgets/wxWidgets-3.0.0/src/msw/window.cpp at line 576: 'SetFocus' failed with error 0x00000057 (the parameter is incorrect.). mkvmerge v6.7.0 ('Back to the Ground') 64bit built on Jan 11 2014 10:17:39 'notrealfilename.avi': Using the demultiplexer for the format 'AVI'. 'notrealfilename.avi' track 0: Using the output module for the format 'MPEG-4'. 'notrealfilename.avi' track 1: Using the output module for the format 'AC3'. The file 'notrealfilename (2).mkv' has been opened for writing. Progress: 0% [omitted lines] Progress: 100% The cue entries (the index) are being written... Muxing took 53 seconds. Output of Debug window: 13:01:17: dpi is 96/96 13:01:17: Querying mkvmerge's capabilities 13:01:17: Capability: VERSION=mkvmerge v6.7.0 ('Back to the Ground') 64bit built on Jan 11 2014 10:17:39 13:01:17: Capability: 13:01:17: Capability: FLAC 13:01:17: Capability: 13:01:36: identify 1: command: ``"C:\Program Files (x86)\MKVToolNix\mkvmerge.exe" "@C:\Users\notme\AppData\Local\Temp\mmg-mkvmerge-options-4456-1389733296"'' 13:01:37: identify 1: result: 0 13:01:37: identify 1: output[0]: ``File 'notrealfilename.avi': container: AVI [is_providing_timecodes:1]'' 13:01:37: identify 1: output[1]: ``Track ID 0: video (MPEG-4p2)'' 13:01:37: identify 1: output[2]: ``Track ID 1: audio (AC3/EAC3)'' 13:01:37: identify 1: output[3]: ``'' In file /home/mosu/prog/video/mingw/cross-git-all/tmp-wxwidgets/wxWidgets-3.0.0/src/msw/window.cpp at line 576: 'SetFocus' failed with error 0x00000057 (the parameter is incorrect.).