Public bug reported: Note: "libavcodec-extra-53" is installed
When I issue ffmpeg -i A.mp4 -ac 2 B.mp4 The result is ffmpeg version 0.7.2-4:0.7.2-1ubuntu1, Copyright (c) 2000-2011 the Libav developers built on Oct 2 2011 15:13:26 with gcc 4.6.1 configuration: --extra-version='4:0.7.2-1ubuntu1' --arch=amd64 --prefix=/usr --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared --disable-static WARNING: library configuration mismatch avutil configuration: --extra-version='4:0.7.2.1ubuntu1' --arch=amd64 --prefix=/usr --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --enable-runtime-cpudetect --enable-vaapi --enable-libopenjpeg --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdirac --enable-libmp3lame --enable-librtmp --enable-libx264 --enable-libxvid --enable-libvo-aacenc --enable-version3 --enable-libvo-amrwbenc --enable-version3 --enable-libdc1394 --enable-shared --disable-static avcodec configuration: --extra-version='4:0.7.2.1ubuntu1' --arch=amd64 --prefix=/usr --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --enable-runtime-cpudetect --enable-vaapi --enable-libopenjpeg --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdirac --enable-libmp3lame --enable-librtmp --enable-libx264 --enable-libxvid --enable-libvo-aacenc --enable-version3 --enable-libvo-amrwbenc --enable-version3 --enable-libdc1394 --enable-shared --disable-static libavutil 51. 7. 0 / 51. 7. 0 libavcodec 53. 5. 0 / 53. 5. 0 libavformat 53. 2. 0 / 53. 2. 0 libavdevice 53. 0. 0 / 53. 0. 0 libavfilter 2. 4. 0 / 2. 4. 0 libswscale 2. 0. 0 / 2. 0. 0 libpostproc 52. 0. 0 / 52. 0. 0 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'A.mp4': Metadata: major_brand : isom minor_version : 1 compatible_brands: isom creation_time : 2010-11-18 08:57:45 Duration: 02:03:57.50, start: 0.000000, bitrate: 2880 kb/s Stream #0.0(und): Video: h264 (High), yuv420p, 1280x528 [PAR 1:1 DAR 80:33], 2496 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc Metadata: creation_time : 2010-11-18 08:27:37 Stream #0.1(und): Audio: aac, 48000 Hz, 5.1, s16, 380 kb/s Metadata: creation_time : 2010-11-18 08:58:53 [buffer @ 0x1927f60] w:1280 h:528 pixfmt:yuv420p Output #0, mp4, to 'B.mp4': Metadata: major_brand : isom minor_version : 1 compatible_brands: isom creation_time : 2010-11-18 08:57:45 encoder : Lavf53.2.0 Stream #0.0(und): Video: mpeg4, yuv420p, 1280x528 [PAR 1:1 DAR 80:33], q=2-31, 200 kb/s, 24k tbn, 23.98 tbc Metadata: creation_time : 2010-11-18 08:27:37 Stream #0.1(und): Audio: libvo_aacenc, 48000 Hz, 2 channels, s16, 64 kb/s Metadata: creation_time : 2010-11-18 08:58:53 Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Press ctrl-c to stop encoding Segmentation fault ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: ffmpeg 4:0.7.2-1ubuntu1 ProcVersionSignature: Ubuntu 3.0.0-14.23-generic 3.0.9 Uname: Linux 3.0.0-14-generic x86_64 ApportVersion: 1.23-0ubuntu4 Architecture: amd64 Date: Mon Dec 26 02:30:07 2011 InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111011) ProcEnviron: LANGUAGE=en_GB:en PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/bash SourcePackage: libav UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: libav (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug oneiric running-unity -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/908646 Title: "Segmentation fault" when converting from 6 to 2 channels To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libav/+bug/908646/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs