id,summary,reporter,owner,description,type,status,priority,component,version,resolution,keywords,cc,blockedby,blocking,reproduced,analyzed 1844,Audio resampling asm crashes on windows,thegeek,,"'''Summary of the bug:''' I get a segmentation fault when trying to join two video files. My ffmpeg is built using my own cross-compiling toolchain. The toolchain itself was built with the mxe cross-development project. I've updated the components in the toolchain to the latest version (e.g. gcc/mingw-w64 4.7.2). I can reproduce the crash with git master as well as version 1.0, but only when I do the compile with my own cross-compiling toolchain, and only when I have asm enabled. If I compile with --disable-asm I can not reproduce. I can not reproduce it with e.g. Zeranoe's win32 builds. '''How to reproduce:''' Unfortunately I can not give a repro case for any precompiled binaries that are publicly available, but I can probably upload the binaries I've compiled if anyone needs them. I can reproduce the crash very reliably with my own binaries, here is the full command line I'm using: {{{ % ffmpeg -i ..\..\Introduction_a.mkv -i ..\..\lesson.wmv -filter_complex ""[1:1] setsar=1:1 [lv]; [0:0] [0:1] [lv] [1:0] concat=n=2:v=1:a=1 [a] [v]"" -map ""[a]"" -map ""[v]"" -vcodec mpeg4 -v:q 7 output.mkv ffmpeg version N-45928-g8b03cd3 Copyright (c) 2000-2012 the FFmpeg developers built on Oct 24 2012 12:18:03 with gcc 4.7.2 (GCC) configuration: --cross-prefix=/home/swingcatalyst/mxe/build-ffmpeg/../../mxe/mxe-multitarget-static/usr/bin/x86_64-static-mingw32- --enable-cross-compile --arch=x86_64 --target-os=mingw32 --prefix=/home/swingcatalyst/mxe/build-ffmpeg/install/ffmpeg-git-x86_64-shared-install --disable-static --enable-shared --disable-postproc --disable-pthreads --enable-runtime-cpudetect --enable-bzlib --enable-libfreetype --enable-libmp3lame --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-zlib --disable-stripping libavutil 52. 0.100 / 52. 0.100 libavcodec 54. 68.100 / 54. 68.100 libavformat 54. 34.100 / 54. 34.100 libavdevice 54. 3.100 / 54. 3.100 libavfilter 3. 20.105 / 3. 20.105 libswscale 2. 1.101 / 2. 1.101 libswresample 0. 16.100 / 0. 16.100 Input #0, matroska,webm, from '..\..\Introduction_a.mkv': Metadata: ENCODER : Lavf54.29.104 Duration: 00:00:06.29, start: 0.000000, bitrate: 2678 kb/s Stream #0:0: Video: mpeg4 (Simple Profile), yuv420p, 1920x1200 [SAR 1:1 DAR 8:5], 24 fps, 24 tbr, 1k tbn, 24 tbc (default) Stream #0:1: Audio: mp3, 44100 Hz, mono, s16, 64 kb/s (default) [wmv3 @ 00000000019DDD40] Extra data: 8 bits left, value: 20 Guessed Channel Layout for Input Stream #1.0 : stereo Input #1, asf, from '..\..\lesson.wmv': Metadata: WMFSDKVersion : 12.0.9200.16384 WMFSDKNeeded : 0.0.0.0000 IsVBR : 0 Duration: 00:00:24.03, start: 0.000000, bitrate: 1713 kb/s Stream #1:0(nor): Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, stereo, fltp, 96 kb/s Stream #1:1(nor): Video: wmv3 (Simple) (WMV3 / 0x33564D57), yuv420p, 1920x1200, 2000 kb/s, 7 tbr, 1k tbn, 1k tbc [Parsed_setsar_0 @ 0000000003570A00] num:den syntax is deprecated, please use num/den or named options instead File 'output.mkv' already exists. Overwrite ? [y/N] y }}} '''Debug info''' I used my cross-compiling mingw toolchain to build gdb, with it I can get the following backtrace at the time of the segmentation fault: {{{ % C:\WORK\ffmpeg\ffmpeg-git-x86_64-shared-install\bin>C:\WORK\ffmpeg\gdb.exe --args ffmpeg -i ..\..\Introduction_a.mkv -i ..\..\lesson.wmv -filter_complex ""[1:1] setsar=1:1 [lv]; [0:0] [0:1] [lv] [1:0] concat=n=2:v=1:a=1 [a] [v]"" -map ""[a]"" -map ""[v]"" -vcodec mpeg4 -q:v 7 output.mkv"" GNU gdb (GDB) 7.5 Copyright (C) 2012 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type ""show copying"" and ""show warranty"" for details. This GDB was configured as ""x86_64-static-mingw32"". For bug reporting instructions, please see: ... Reading symbols from C:\WORK\ffmpeg\ffmpeg-git-x86_64-shared-install\bin\ffmpeg.exe...done. (gdb) run Starting program: C:\WORK\ffmpeg\ffmpeg-git-x86_64-shared-install\bin\ffmpeg.exe -i ..\..\Introduction_a.mkv -i ..\..\lesson.wmv -filter_complex ""[1:1] setsar=1:1 [lv]; [0:0] [0:1] [lv] [1:0] concat=n=2:v=1:a=1 [a] [v]"" -map ""[a]"" -map ""[v]"" -vcodec mpeg4 -q:v 7 output.mkv [New Thread 10656.0x2b18] ffmpeg version N-45928-g8b03cd3 Copyright (c) 2000-2012 the FFmpeg developers built on Oct 24 2012 12:18:03 with gcc 4.7.2 (GCC) configuration: --cross-prefix=/home/swingcatalyst/mxe/build-ffmpeg/../../mxe/mxe-multitarget-static/usr/bin/x86_64-static-mingw32- --enable-cross-compile --arch=x86_64 --target-os=mingw32 --prefix=/home/swingcatalyst/mxe/build-ffmpeg/install/ffmpeg-git-x86_64-shared-install --disable-static --enable-shared --disable-postproc --disable-pthreads --enable-runtime-cpudetect --enable-bzlib --enable-libfreetype --enable-libmp3lame --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-zlib --disable-stripping libavutil 52. 0.100 / 52. 0.100 libavcodec 54. 68.100 / 54. 68.100 libavformat 54. 34.100 / 54. 34.100 libavdevice 54. 3.100 / 54. 3.100 libavfilter 3. 20.105 / 3. 20.105 libswscale 2. 1.101 / 2. 1.101 libswresample 0. 16.100 / 0. 16.100 Input #0, matroska,webm, from '..\..\Introduction_a.mkv': Metadata: ENCODER : Lavf54.29.104 Duration: 00:00:06.29, start: 0.000000, bitrate: 2678 kb/s Stream #0:0: Video: mpeg4 (Simple Profile), yuv420p, 1920x1200 [SAR 1:1 DAR 8:5], 24 fps, 24 tbr, 1k tbn, 24 tbc (default) Stream #0:1: Audio: mp3, 44100 Hz, mono, s16, 64 kb/s (default) [wmv3 @ 00000000019DDD40] Extra data: 8 bits left, value: 20 Guessed Channel Layout for Input Stream #1.0 : stereo Input #1, asf, from '..\..\lesson.wmv': Metadata: WMFSDKVersion : 12.0.9200.16384 WMFSDKNeeded : 0.0.0.0000 IsVBR : 0 Duration: 00:00:24.03, start: 0.000000, bitrate: 1713 kb/s Stream #1:0(nor): Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, stereo, fltp, 96 kb/s Stream #1:1(nor): Video: wmv3 (Simple) (WMV3 / 0x33564D57), yuv420p, 1920x1200, 2000 kb/s, 7 tbr, 1k tbn, 1k tbc [Parsed_setsar_0 @ 0000000003570A00] num:den syntax is deprecated, please use num/den or named options instead File 'output.mkv' already exists. Overwrite ? [y/N] y [New Thread 10656.0x24] [New Thread 10656.0xc98] [New Thread 10656.0x1c84] [New Thread 10656.0x23a8] [New Thread 10656.0x28c0] [New Thread 10656.0x2604] [New Thread 10656.0x2318] [New Thread 10656.0x1a98] [New Thread 10656.0x144c] [New Thread 10656.0x21e8] Extra data: 8 bits left, value: 20 Output #0, matroska, to 'output.mkv': Metadata: encoder : Lavf54.34.100 Stream #0:0: Video: mpeg4, yuv420p, 1920x1200 [SAR 1:1 DAR 8:5], q=2-31, 200 kb/s, 1k tbn, 24 tbc Stream #0:1: Audio: vorbis, 44100 Hz, mono, fltp Stream mapping: Stream #0:0 (mpeg4) -> concat:in0:v0 Stream #0:1 (mp3) -> concat:in0:a0 Stream #1:0 (wmav2) -> concat:in1:a0 Stream #1:1 (wmv3) -> setsar concat:out:v0 -> Stream #0:0 (mpeg4) concat:out:a0 -> Stream #0:1 (libvorbis) Press [q] to stop, [?] for help 100 buffers queued in output stream 0:1, something may be wrong.te= 871.8kbits/s Program received signal SIGSEGV, Segmentation fault. 0x00000000707cd0e8 in ff_mix_2_1_a_float_avx () from C:\WORK\ffmpeg\ffmpeg-git-x86_64-shared-install\bin\swresample-0.dll (gdb) backtrace #0 0x00000000707cd0e8 in ff_mix_2_1_a_float_avx () from C:\WORK\ffmpeg\ffmpeg-git-x86_64-shared-install\bin\swresample-0.dll #1 0x00000000707c4147 in swri_rematrix (s=s@entry=0x3168b80, out=out@entry=0x23de00, in=in@entry=0x3168c30, len=len@entry=8192, }}}",defect,closed,normal,swresample,git-master,fixed,win64 crash SIGSEGV,,,,0,0