Why does x264.exe 32 crash on Win7 64?

[Redsandro]

I searched and asked everywhere, I cannot resolve this.

I have my lagarith sources, and I have both lagarith 32 and 64 bit installed. I have 32 bit AviSynth. I have 32 bit x264.exe.

First I put my lagarith in a proper .avs file to convet it to YV12 before feeding it to x264. It works in Windows XP 64, but the exact same setup fails in Windows 7.

"x264.exe has stopped working"

The .avs encodes just fine in XP64 and plays just fine in Windows 7 with other 32 bit apps (such as VDub32, MPC32, After Effects CS3x32 etc).

I tried many different builds and I downloaded a random debug version from J_Darnley and used gdb on it.

First it said something like:
Error: dll starting at 0x77301000
Signal SIGSEGV, Segmentation fault
blablabla in SysWOW64\guard32.dll

guard32.dll is Comodo Firewall. Disabling it didn't help so I uninstalled and rebooted. And now:

D:\Common\MinGW\bin>gdb
GNU gdb 6.3
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i686-pc-mingw32".
(gdb) target help
Undefined target command: "help". Try "help target".
(gdb) target exec d:\software\video\tools\x264\megui\tools\x264\x264-debug.exe
(gdb) run p:\out\hoe.avs -o NUL
Starting program: d:\software\video\tools\x264\megui\tools\x264\x264-debug.exe p:\out\hoe.avs -o NUL
Error: dll starting at 0x76f11000 not found.

Error: dll starting at 0x74ee1000 not found.

Error: dll starting at 0x76f11000 not found.

Error: dll starting at 0x77031000 not found.

---Type <return> to continue, or q <return> to quit---
warning: DllMain: hModule=0x10000000, ulReason=1, lpReserved=0x00000000, gRefCnt = 0

warning: DllGetClassObject() CLSID: CAVIFileSynth

warning: 008F5B88->CAVIFileSynth::CAVIFileSynth()

warning: 008F5B88->CAVIFileSynth::AddRef() gRefCnt=1, m_refs=1

warning: 008F5B88->CAVIFileSynth::QueryInterface() {00000001-0000-0000-c000-000000000046} (IClassFactory)

warning: 008F5B88->CAVIFileSynth::AddRef() gRefCnt=2, m_refs=2

warning: 008F5B88->CAVIFileSynth::Release() gRefCnt=1, m_refs=1

warning: DllGetClassObject() result=0x0, object=008F5B90

warning: 008F5B88->CAVIFileSynth::CreateInstance()

warning: 008F5BE0->CAVIFileSynth::CAVIFileSynth()

warning: 008F5BE0->CAVIFileSynth::AddRef() gRefCnt=2, m_refs=1

warning: 008F5BE0->CAVIFileSynth::QueryInterface() {00000000-0000-0000-c000-000000000046} (IUnknown)

warning: 008F5BE0->CAVIFileSynth::AddRef() gRefCnt=3, m_refs=2

warning: 008F5BE0->CAVIFileSynth::Release() gRefCnt=2, m_refs=1

warning: 008F5B88->CAVIFileSynth::CreateInstance() result=0x0, object=008F5BE0

warning: 008F5BE0->CAVIFileSynth::AddRef() gRefCnt=3, m_refs=2

warning: 008F5BE0->CAVIFileSynth::Release() gRefCnt=2, m_refs=1

warning: 008F5B88->CAVIFileSynth::Release() gRefCnt=1, m_refs=0

warning: 008F5B88->CAVIFileSynth::~CAVIFileSynth(), gRefCnt = 1

warning: 008F5BE0->CAVIFileSynth::QueryInterface() {00000000-0000-0000-c000-000000000046} (IUnknown)

warning: 008F5BE0->CAVIFileSynth::AddRef() gRefCnt=2, m_refs=2

warning: 008F5BE0->CAVIFileSynth::Release() gRefCnt=1, m_refs=1

warning: 008F5BE0->CAVIFileSynth::QueryInterface() {00020025-0000-0000-c000-000000000046} (unsupported!)

warning: 008F5BE0->CAVIFileSynth::QueryInterface() {0000010b-0000-0000-c000-000000000046} (IPersistFile)

warning: 008F5BE0->CAVIFileSynth::AddRef() gRefCnt=2, m_refs=2

warning: 008F5BE0->CAVIFileSynth::QueryInterface() {00020020-0000-0000-c000-000000000046} (IAVIFile)

warning: 008F5BE0->CAVIFileSynth::AddRef() gRefCnt=3, m_refs=3

warning: 008F5BE0->CAVIFileSynth::Load("p:\out\hoe.avs", 0x0)

warning: 008F5BE0->CAVIFileSynth::Release() gRefCnt=2, m_refs=2

warning: 008F5BE0->CAVIFileSynth::Release() gRefCnt=1, m_refs=1

warning: 008F5BE0->CAVIFileSynth::GetStream(*, 73646976(vids), 0)


Program received signal SIGSEGV, Segmentation fault.
0x1000ef9e in ilNextPower2 () from C:\Windows\SysWOW64\avisynth.dll
(gdb) quit

I don't get it. Blame seems to point at avisynth.dll but I have established that there is no problem with AviSynth. At least for the other apps.


As a side-note, I have the same with FFMpeg. This scenario works perfectly with the same files on XP64, but on Windows 7:

ffmpeg -i test.avs -b 25M -mbd rd -trellis 2 -cmp 2 -subcmp 2 -g 13 -bf 2 -ab 384k test.mpg
FFmpeg version SVN-r19217, Copyright (c) 2000-2009 Fabrice Bellard, et al.
configuration: --enable-memalign-hack --prefix=/mingw --cross-prefix=i686-mingw32- --cc=ccache-i686-mingw32-gcc --target-os=mingw32 --arch=i686 --cpu=i686 --enable-avisynth --enable-gpl --enable-zlib --enable-bzlib --enable-libgsm --enable-libfaad --enable-pthreads --enable-libvorbis --enable-libtheora --enable-libspeex --enable-libmp3lame --enable-libopenjpeg --enable-libxvid --enable-libschroe
dinger --enable-libx264 libavutil 50. 3. 0 / 50. 3. 0
libavcodec 52.31. 2 / 52.31. 2
libavformat 52.34. 0 / 52.34. 0
libavdevice 52. 2. 0 / 52. 2. 0
libswscale 0. 7. 1 / 0. 7. 1
built on Jun 18 2009 04:03:59, gcc: 4.2.4

<ffmpeg.exe has stopped working message>

I cannot seem to find the solution on my own..

[Audionut]

What version of avisynth and x264 are you using?

[LoRd_MuldeR]

You say that you are using a "lagarith" source. So the crash may actually come from Avisynth, more specifically from the lagarith decoder, not from x264 itself.

Lagarith has caused enough trouble in the past. It's known to be problematic...

[Redsandro]

What version of avisynth and x264 are you using?

I have tried a buch of versions but I started deleting the ones that fail so I only have a few left:

Oldest: x264 core:56 svn-674
Latest: x264 core:67 r1173M f6d3166
Debug: x264 core:67 r1173 f6d3166 (The version I used for above output)

Avisynth 2.5.7 (last month) and now 2.5.8.

You say that you are using a "lagarith" source. So the crash may actually come from Avisynth, more specifically from the lagarith decoder, not from x264 itself.

Yeah, but both the lagarith and the wrapping avisynth script work in every single other app I might want to use (except FFMpeg). Besides, the exact same versions of everything used work in XP64, I booted in XP64 because I need to encode some things, but, you know, staying in your main OS is nicer. :)

The two bugs I encountered previously in Lagarith are fixed since I contacted the author and since then I've never discovered another oddity in any software, except for x264 if what you suggest is true.

I have the feeling some Windows 7 'feature' is causing apps like x264 (and maybe FFMpeg) to choke. Or it causes avs/lagarith to output something that is only picked up by x264 and not by other software.

Earlier I read Windows 7 has some new non-fvw video system iirc, and there are tools to fix this. But I've not had a problem so far with plain video playing, editing and encoding (using VDub or other MP4 encoders (which are worse compared to x264 ^^)) so I have no experience, and I'm also not sure if that's related. Just suggesting something because I am truely out of probable sounding ideas after chasing this rabbit practically all day.

[LoRd_MuldeR]

Yeah, but both the lagarith and the wrapping avisynth script work in every single other app I might want to use (except FFMpeg).

Which doesn't say anything. The presence of crashes indicates a bug. But the absence of crashes can't prove the absence of bugs!

For the very same reasons the debugging of an application can only help to discover unknown bugs, but it can never verify that the program is 100% correct ;)

So try with something other than a lagarith source, at least for testing. Convert your lagarith source to HuffYUV or FFv1 in VirtualDub for example.

[Redsandro]

Roger. Good call. I tried some other codecs in yv12 which x264 didn't accept, but I didn't wrap them in avs which I will now try.

Okay in a moment, I'll reboot to 7 when my current encodes are complete.

[Redsandro]

No Ball. I tried:

Uncompressed
Xvid
HUFFyuv

both with DirectShowSource and AVISource. In all cases x264 crashes just the same. So it is not lagarith related.

[kemuri-_9]

how about you actually give useful information about this crash....

like
1. where during the encode does it crash? (right from the start/ during the encode/ at the end)
2. provide information about your avs script(s)/source file(s) you were causing crashes with (res & framerate)
3. provide a backtrace the next time you use gdb, as what you gave is hardly useful.

[Redsandro]

Thanks for the tone of voice. I tried my best in the OP but I am not a programmer, I just work with media and since it works in every other occasion. Any format of file I encode gives the same crash. So I thought those specs were irrelevant.

1. Right from the start, I enter the command, no output, and the stopped working message pops up.
2. In this occasion 1280x720x25p contained in avi with 4 different codecs tried like mentioned above, in an avs like so:DirectShowSource("YV21.avi")
ConvertToYV12(matrix="Rec709")
3. Uhh.. speaking about the no programmer thing. I have to google a bit or you tell me how I provide any bt that might help. :x

[Redsandro]

Oops that was easy..

Backtrace for x264 core:67 r1173 f6d3166d:\Common\MinGW\bin\gdb.exe --args x264-debug.exe YV12.avs -o NUL
GNU gdb 6.3
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i686-pc-mingw32"...
(gdb) run
Starting program: x264-debug.exe YV12.avs -o NUL
Error: dll starting at 0x77911000 not found.

Error: dll starting at 0x77341000 not found.

Error: dll starting at 0x77911000 not found.

Error: dll starting at 0x77811000 not found.

warning: DllMain: hModule=0x10000000, ulReason=1, lpReserved=0x00000000, gRefCnt = 0

warning: DllGetClassObject() CLSID: CAVIFileSynth

warning: 00925BB8->CAVIFileSynth::CAVIFileSynth()

warning: 00925BB8->CAVIFileSynth::AddRef() gRefCnt=1, m_refs=1

warning: 00925BB8->CAVIFileSynth::QueryInterface() {00000001-0000-0000-c000-000000000046} (IClassFactory)

warning: 00925BB8->CAVIFileSynth::AddRef() gRefCnt=2, m_refs=2

warning: 00925BB8->CAVIFileSynth::Release() gRefCnt=1, m_refs=1

warning: DllGetClassObject() result=0x0, object=00925BC0

warning: 00925BB8->CAVIFileSynth::CreateInstance()

warning: 00925C10->CAVIFileSynth::CAVIFileSynth()

warning: 00925C10->CAVIFileSynth::AddRef() gRefCnt=2, m_refs=1

warning: 00925C10->CAVIFileSynth::QueryInterface() {00000000-0000-0000-c000-000000000046} (IUnknown)

warning: 00925C10->CAVIFileSynth::AddRef() gRefCnt=3, m_refs=2

warning: 00925C10->CAVIFileSynth::Release() gRefCnt=2, m_refs=1

warning: 00925BB8->CAVIFileSynth::CreateInstance() result=0x0, object=00925C10

warning: 00925C10->CAVIFileSynth::AddRef() gRefCnt=3, m_refs=2

warning: 00925C10->CAVIFileSynth::Release() gRefCnt=2, m_refs=1

warning: 00925BB8->CAVIFileSynth::Release() gRefCnt=1, m_refs=0

warning: 00925BB8->CAVIFileSynth::~CAVIFileSynth(), gRefCnt = 1

warning: 00925C10->CAVIFileSynth::QueryInterface() {00000000-0000-0000-c000-000000000046} (IUnknown)

warning: 00925C10->CAVIFileSynth::AddRef() gRefCnt=2, m_refs=2

warning: 00925C10->CAVIFileSynth::Release() gRefCnt=1, m_refs=1

warning: 00925C10->CAVIFileSynth::QueryInterface() {00020025-0000-0000-c000-000000000046} (unsupported!)

warning: 00925C10->CAVIFileSynth::QueryInterface() {0000010b-0000-0000-c000-000000000046} (IPersistFile)

warning: 00925C10->CAVIFileSynth::AddRef() gRefCnt=2, m_refs=2

warning: 00925C10->CAVIFileSynth::QueryInterface() {00020020-0000-0000-c000-000000000046} (IAVIFile)

warning: 00925C10->CAVIFileSynth::AddRef() gRefCnt=3, m_refs=3

warning: 00925C10->CAVIFileSynth::Load("YV12.avs", 0x0)

warning: 00925C10->CAVIFileSynth::Release() gRefCnt=2, m_refs=2

warning: 00925C10->CAVIFileSynth::Release() gRefCnt=1, m_refs=1

warning: 00925C10->CAVIFileSynth::GetStream(*, 73646976(vids), 0)


Program received signal SIGSEGV, Segmentation fault.
0x1000ef9e in ilNextPower2 () from C:\Windows\SysWOW64\avisynth.dll
(gdb) bt
#0 0x1000ef9e in ilNextPower2 () from C:\Windows\SysWOW64\avisynth.dll
#1 0x773699b3 in KERNEL32!GetNumberFormatEx ()
#2 0x100ebde4 in ilNextPower2 () from C:\Windows\SysWOW64\avisynth.dll
#3 0x00925d50 in ?? ()
#4 0x00000000 in ?? () from
#5 0x773699b3 in KERNEL32!GetNumberFormatEx ()
#6 0x100ebde4 in ilNextPower2 () from C:\Windows\SysWOW64\avisynth.dll
#7 0x1000eee3 in ilNextPower2 () from C:\Windows\SysWOW64\avisynth.dll
#8 0x100ebde4 in ilNextPower2 () from C:\Windows\SysWOW64\avisynth.dll
#9 0x00000000 in ?? () from
#10 0x00925c68 in ?? ()
#11 0x0028f494 in ?? ()
#12 0x00000000 in ?? () from
#13 0x00000000 in ?? () from
#14 0x1000f10a in ilNextPower2 () from C:\Windows\SysWOW64\avisynth.dll
#15 0x00925c68 in ?? ()
#16 0x0028f470 in ?? ()
#17 0x100ebde4 in ilNextPower2 () from C:\Windows\SysWOW64\avisynth.dll
#18 0x00000000 in ?? () from
#19 0x00925c68 in ?? ()
#20 0x00000000 in ?? () from
#21 0x00000000 in ?? () from
#22 0x00000000 in ?? () from
---Type <return> to continue, or q <return> to quit---
#23 0x0279bc9c in ?? ()
#24 0x0279bc9c in ?? ()
#25 0x00925c68 in ?? ()
#26 0x0028f48c in ?? ()
#27 0x006c5818 in ?? ()
#28 0x0028f45c in ?? ()
#29 0x0028f820 in ?? ()
#30 0x100e0668 in ilNextPower2 () from C:\Windows\SysWOW64\avisynth.dll
#31 0x00000000 in ?? () from
#32 0x00925c68 in ?? ()
#33 0x1000f596 in ilNextPower2 () from C:\Windows\SysWOW64\avisynth.dll
#34 0x00000000 in ?? () from
#35 0x00925c68 in ?? ()
#36 0x0028f88c in ?? ()
#37 0x00000000 in ?? () from
#38 0x00000005 in ?? ()
#39 0x00925df0 in ?? ()
#40 0x00920000 in ?? ()
#41 0x00926fe0 in ?? ()
#42 0x0e28f4d0 in ?? ()
#43 0x00000000 in ?? () from
#44 0x006b31c8 in ?? ()
#45 0x00000000 in ?? () from
---Type <return> to continue, or q <return> to quit---
#46 0x0000007f in ?? ()
#47 0x0028f5bc in ?? ()
#48 0x77c43aaa in ntdll!RtlLengthSid ()
#49 0x00000005 in ?? ()
#50 0x77c9aeda in ntdll!AlpcMaxAllowedMessageLength ()
#51 0x0028f5bc in ?? ()
#52 0x77c61c59 in ntdll!RtlTraceDatabaseUnlock ()
#53 0x77c43b23 in ntdll!_aulldiv ()
#54 0x77dcc39f in ?? ()
#55 0x00000010 in ?? ()
#56 0x00000000 in ?? () from
#57 0x00920000 in ?? ()
#58 0x00920150 in ?? ()
#59 0xe7ffffff in ?? ()
#60 0x0028f6f4 in ?? ()
#61 0x00920150 in ?? ()
#62 0x000011e0 in ?? ()
#63 0x00920180 in ?? ()
#64 0x0028f6f4 in ?? ()
#65 0x00000239 in ?? ()
#66 0x02020e04 in ?? ()
#67 0x00920150 in ?? ()
#68 0x0000007f in ?? ()
---Type <return> to continue, or q <return> to quit---
#69 0x00c05df8 in ?? ()
#70 0xffffffff in ?? ()
#71 0x0000007f in ?? ()
#72 0x00965818 in ?? ()
#73 0x00000005 in ?? ()
#74 0x00000000 in ?? () from
#75 0x02020e99 in ?? ()
#76 0x00740e99 in ?? ()
#77 0x00c05e10 in ?? ()
#78 0x00000000 in ?? () from
#79 0x06040002 in ?? ()
#80 0x00c02928 in ?? ()
#81 0x7733023c in WaitForThreadpoolWorkCallbacks ()
#82 0x57d33aba in ?? ()
#83 0x0028f588 in ?? ()
#84 0x00000000 in ?? () from
#85 0x0000007f in ?? ()
#86 0x48000001 in ?? ()
#87 0x3804023e in ?? ()
#88 0x000011e0 in ?? ()
#89 0x00000000 in ?? () from
#90 0xffffffff in ?? ()
#91 0x50000163 in ?? ()
---Type <return> to continue, or q <return> to quit---
#92 0x00000018 in ?? ()
#93 0x00c05df8 in ?? ()
#94 0x00c05df8 in ?? ()
#95 0x00c05df3 in ?? ()
#96 0x00000000 in ?? () from
#97 0x0028f6f4 in ?? ()
#98 0x00c00000 in ?? ()
#99 0x0328f5f4 in ?? ()
#100 0x0028f4ec in ?? ()
#101 0x7733023c in WaitForThreadpoolWorkCallbacks ()
#102 0x0028f67c in ?? ()
#103 0x77c8041d in ntdll!AlpcMaxAllowedMessageLength ()
#104 0x0037059d in ?? ()
#105 0xfffffffe in ?? ()
#106 0x77c43b23 in ntdll!_aulldiv ()
#107 0x77c43b4e in ntdll!_aulldiv ()
#108 0x00000010 in ?? ()
#109 0x00000028 in ?? ()
#110 0x00c05df2 in ?? ()
#111 0x00c05df0 in ?? ()
#112 0x00000010 in ?? ()
#113 0x00c00000 in ?? ()
#114 0x00000001 in ?? ()
---Type <return> to continue, or q <return> to quit---
#115 0x00000003 in ?? ()
#116 0x00000005 in ?? ()
#117 0x00000001 in ?? ()
#118 0x0028f5f4 in ?? ()
#119 0x0028f6f4 in ?? ()
#120 0x00720074 in ?? ()
#121 0x00650075 in ?? ()
#122 0x00000000 in ?? () from
#123 0x00c00000 in ?? ()
#124 0x03129858 in ?? ()
#125 0x0028f550 in ?? ()
#126 0x00000000 in ?? () from
#127 0x0028f6e0 in ?? ()
#128 0x0028f644 in ?? ()
#129 0x77cdfd6e in ntdll!TpReleaseTimer ()
#130 0x00c00000 in ?? ()
#131 0x00000000 in ?? () from
#132 0x00000010 in ?? ()
#133 0x00c00000 in ?? ()
#134 0x00000001 in ?? ()
#135 0x00000004 in ?? ()
#136 0x00000000 in ?? () from
#137 0x00c05df0 in ?? ()
---Type <return> to continue, or q <return> to quit---
#138 0x00000000 in ?? () from
#139 0x00c00000 in ?? ()
#140 0x0028f68c in ?? ()
#141 0x77ce05f2 in ntdll!TpQueryPoolStackInformation ()
#142 0x00c00138 in ?? ()
#143 0x77ce05d6 in ntdll!TpReleaseAlpcCompletion ()
#144 0x77dc3401 in ?? ()
#145 0x00000000 in ?? () from
#146 0x00000000 in ?? () from
#147 0x00c00000 in ?? ()
#148 0x00000001 in ?? ()
#149 0x00000000 in ?? () from
#150 0x00c05df8 in ?? ()
#151 0x01d334f3 in ?? ()
#152 0x0028f654 in ?? ()
#153 0x0028f6a8 in ?? ()
#154 0x0028f760 in ?? ()
#155 0x77c8041d in ntdll!AlpcMaxAllowedMessageLength ()
#156 0x00370c6d in ?? ()
#157 0xfffffffe in ?? ()
#158 0x77ce05d6 in ntdll!TpReleaseAlpcCompletion ()
#159 0x77c9ac4b in ntdll!AlpcMaxAllowedMessageLength ()
#160 0x00c00000 in ?? ()
---Type <return> to continue, or q <return> to quit---
#161 0x50000163 in ?? ()
#162 0x77c43b23 in ntdll!_aulldiv ()
#163 0x77dc35fd in ?? ()
#164 0x00000000 in ?? () from
#165 0x00000000 in ?? () from
#166 0x00c00000 in ?? ()
#167 0x00c00138 in ?? ()
#168 0x77ce05d6 in ntdll!TpReleaseAlpcCompletion ()
#169 0x77dc347d in ?? ()
#170 0x00000000 in ?? () from
#171 0x00000000 in ?? () from
#172 0x00c00000 in ?? ()
#173 0x00950150 in ?? ()
#174 0x00000000 in ?? () from
#175 0x00c05c68 in ?? ()
#176 0x01950150 in ?? ()
#177 0x0028f6b8 in ?? ()
#178 0x00000000 in ?? () from
#179 0x0028f7c4 in ?? ()
#180 0x77c8041d in ntdll!AlpcMaxAllowedMessageLength ()
#181 0x00370c6d in ?? ()
#182 0xfffffffe in ?? ()
#183 0x77ce05d6 in ntdll!TpReleaseAlpcCompletion ()
---Type <return> to continue, or q <return> to quit---
#184 0x006f006e in ?? ()
#185 0x00000000 in ?? () from
#186 0x00000000 in ?? () from
#187 0x00000000 in ?? () from
#188 0x77dc3559 in ?? ()
#189 0x763409e4 in msvcrt!?_set_se_translator@@YAP6AXIPAU_EXCEPTION_POINTERS@@@Z
P6AXI0@Z@Z () from C:\Windows\syswow64\msvcrt.dll
#190 0x00000000 in ?? () from
#191 0x00c00000 in ?? ()
#192 0x0000007f in ?? ()
#193 0x00000000 in ?? () from
#194 0x06040103 in ?? ()
#195 0x00000006 in ?? ()
#196 0x00950180 in ?? ()
#197 0x00000000 in ?? () from
#198 0x00000000 in ?? () from
#199 0x0028f790 in ?? ()
#200 0x40000062 in ?? ()
#201 0x00000009 in ?? ()
#202 0x00960660 in ?? ()
#203 0x00000000 in ?? () from
#204 0x009657d0 in ?? ()
#205 0x00000000 in ?? () from
---Type <return> to continue, or q <return> to quit---
#206 0x00000000 in ?? () from
#207 0x00c00000 in ?? ()
#208 0x00000000 in ?? () from
#209 0x0028f6a0 in ?? ()
#210 0x00004f35 in ?? ()
#211 0x0028f880 in ?? ()
#212 0x77c8041d in ntdll!AlpcMaxAllowedMessageLength ()
#213 0x0037059d in ?? ()
#214 0xfffffffe in ?? ()
#215 0x77c43b23 in ntdll!_aulldiv ()
#216 0x77c43b4e in ntdll!_aulldiv ()
#217 0x00000010 in ?? ()
#218 0x00000000 in ?? () from
#219 0x00000000 in ?? () from
#220 0x0028f7e4 in ?? ()
#221 0x00000000 in ?? () from
#222 0x00000010 in ?? ()
#223 0x77c3dec6 in ntdll!LdrWx86FormatVirtualImage ()
#224 0x77c3b76a in ntdll!RtlDowncaseUnicodeChar ()
#225 0x77c2fa8a in ntdll!isdigit ()
#226 0x7735d273 in WerRegisterMemoryBlock ()
#227 0xffffffff in ?? ()
#228 0x00000003 in ?? ()
---Type <return> to continue, or q <return> to quit---
#229 0x0028f7c0 in ?? ()
#230 0x0000002c in ?? ()
#231 0x00000000 in ?? () from
#232 0x80004005 in ?? ()
#233 0x00c05c68 in ?? ()
#234 0x00000000 in ?? () from
#235 0x0448c000 in ?? ()
#236 0x0448c000 in ?? ()
#237 0x000006de in ?? ()
#238 0x006b8000 in ?? ()
#239 0x006b8000 in ?? ()
#240 0x00020d60 in ?? ()
#241 0x00020d60 in ?? ()
#242 0x00002258 in ?? ()
#243 0x00002238 in ?? ()
#244 0x00000004 in ?? ()
#245 0x00000000 in ?? () from
#246 0x00000000 in ?? () from
#247 0x0041a2dc in x264_macroblock_cache_init (h=<incomplete type>)
at common/macroblock.c:730
#248 0x05eb5dec in ?? ()
#249 0x90909090 in ?? ()
#250 0x55ff8b90 in ?? ()
---Type <return> to continue, or q <return> to quit---
#251 0x8b53ec8b in ?? ()
#252 0x6a560c5d in ?? ()
#253 0xff6a53ff in ?? ()
#254 0xbe0875ff in ?? ()
#255 0x40000001 in ?? ()
#256 0x04006856 in ?? ()
#257 0xb9e80000 in ?? ()
#258 0x85ffffff in ?? ()
#259 0x59840fc0 in ?? ()
#260 0x8300019f in ?? ()
#261 0x5b5efec0 in ?? ()
#262 0x0008c25d in ?? ()
#263 0x90909090 in ?? ()
#264 0x55ff8b90 in ?? ()
#265 0xff5dec8b in ?? ()
#266 0x35000825 in ?? ()
#267 0x90909077 in ?? ()
#268 0xff8b9090 in ?? ()
#269 0x5dec8b55 in ?? ()
#270 0x909005eb in ?? ()
#271 0xff909090 in ?? ()
#272 0x350bb825 in ?? ()
#273 0x10438b77 in ?? ()
---Type <return> to continue, or q <return> to quit---
#274 0x0f083966 in ?? ()
#275 0xff347b85 in ?? ()
#276 0x33a4e9ff in ?? ()
#277 0x6581ffff in ?? ()
#278 0xffffffa0 in ?? ()
#279 0x0fce3bfe in ?? ()
#280 0xfe91e384 in ?? ()
#281 0xec6583ff in ?? ()
#282 0x91dae9fb in ?? ()
#283 0x6581fffe in ?? ()
#284 0xffffffa0 in ?? ()
#285 0x91c2e9df in ?? ()
#286 0x9090fffe in ?? ()
#287 0xff909090 in ?? ()
#288 0x3507f025 in ?? ()
#289 0x90909077 in ?? ()
#290 0x25ff9090 in ?? ()
#291 0x77350cb8 in KERNEL32!BaseFlushAppcompatCache ()
#292 0x90909090 in ?? ()
#293 0x55ff8b90 in ?? ()
#294 0xeb5dec8b in ?? ()
#295 0x90909005 in ?? ()
#296 0x25ff9090 in ?? ()
---Type <return> to continue, or q <return> to quit---
#297 0x77350950 in RegQueryInfoKeyA ()
#298 0x90909090 in ?? ()
#299 0x55ff8b90 in ?? ()
#300 0xeb5dec8b in ?? ()
#301 0x90909005 in ?? ()
#302 0x25ff9090 in ?? ()
#303 0x77350ac4 in KERNEL32!BaseFlushAppcompatCache ()
#304 0x90909090 in ?? ()
#305 0x6a006a90 in ?? ()
#306 0x38996800 in ?? ()
#307 0xfc687735 in ?? ()
#308 0xff774102 in ?? ()
#309 0x35020015 in ?? ()
#310 0x0138b877 in ?? ()
#311 0xe8c37741 in ?? ()
#312 0xfffe7a64 in ?? ()
#313 0x00a490ff in ?? ()
#314 0x026a0000 in ilNextPower2 () from C:\Windows\SysWOW64\devil.dll
#315 0xe85036ff in ?? ()
#316 0x00000020 in ?? ()
#317 0xfe8b6ae9 in ?? ()
#318 0x15ff50ff in ?? ()
#319 0x77350554 in KERNEL32!GetVolumePathNamesForVolumeNameA ()
Cannot access memory at address 0x7734fe4c
(gdb) quit

[Redsandro]

Wow, I made a wrong assumption here.
While everything I said is true about AviSynth 2.5.8, I thought 2.5.7 crashed similar back when I used it but it was actually an error raised by MeGUI for using a parameter in a profile that wasn't available in that version of x264.

Now that I strip most of the parameters, x264 works again when I use avs 2.5.7 but not with avs 2.5.8!

Omg I cannot believe I wasted my day finding that out.. anyway maybe I should notify the ppl at avs.

[Yoshiyuki Blade]

I'm on Windows 7 64-bit Build 7100 here and everything's working perfectly with MeGUI (with the latest revision of x264) and AviSynth 2.5.8.