$ ffmpeg -i 23.flv -vcodec copy -acodec libmp3lame -ar 44100 -async 1 -sameq -y res2.flv FFmpeg version SVN-r19352-4:0.5+svn20090706-2ubuntu2, Copyright (c) 2000-2009 Fabrice Bellard, et al. configuration: --extra-version=4:0.5+svn20090706-2ubuntu2 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --disable-stripping --disable-vhook --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --extra-cflags=-I/build/buildd/ffmpeg-0.5+svn20090706/debian/include --enable-shared --disable-static libavutil 49.15. 0 / 49.15. 0 libavcodec 52.20. 0 / 52.20. 0 libavformat 52.31. 0 / 52.31. 0 libavdevice 52. 1. 0 / 52. 1. 0 libavfilter 0. 4. 0 / 0. 4. 0 libswscale 0. 7. 1 / 0. 7. 1 libpostproc 51. 2. 0 / 51. 2. 0 built on Oct 13 2009 22:15:16, gcc: 4.4.1 Input #0, flv, from '23.flv': Duration: 00:05:42.50, start: 0.000000, bitrate: 613 kb/s Stream #0.0: Video: flv, yuv420p, 320x240, 613 kb/s, 1k tbr, 1k tbn, 1k tbc Stream #0.1: Audio: nellymoser, 5512 Hz, mono, s16 Output #0, flv, to 'res2.flv': Stream #0.0: Video: flv, yuv420p, 320x240, q=2-31, 613 kb/s, 90k tbn, 1k tbc Stream #0.1: Audio: libmp3lame, 44100 Hz, mono, s16, 64 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Press [q] to stop encoding frame= 1977 fps=1281 q=-1.0 size= 9994kB time=139.07 bitrate= 588.7kbits/s frame= 2506 fps=1226 q=-1.0 size= 13118kB time=177.10 bitrate= 606.8kbits/s frame= 3126 fps=1228 q=-1.0 size= 17779kB time=222.50 bitrate= 654.6kbits/s frame= 3785 fps=1220 q=-1.0 size= 22116kB time=268.80 bitrate= 674.0kbits/s frame= 4455 fps=1236 q=-1.0 size= 25833kB time=315.50 bitrate= 670.8kbits/s frame= 4833 fps=1225 q=-1.0 Lsize= 28012kB time=342.07 bitrate= 670.8kbits/s video:25059kB audio:2672kB global headers:0kB muxing overhead 1.011173% *** glibc detected *** ffmpeg: free(): invalid pointer: 0xb62c9008 *** ======= Backtrace: ========= /lib/tls/i686/cmov/libc.so.6[0xb6d8aff1] /lib/tls/i686/cmov/libc.so.6[0xb6d8c6f2] /lib/tls/i686/cmov/libc.so.6(cfree+0x6d)[0xb6d8f7cd] /usr/lib/libmp3lame.so.0(freegfc+0x93)[0xb6950e73] /usr/lib/libmp3lame.so.0(lame_close+0x73)[0xb693aa53] /usr/lib/i686/cmov/libavcodec.so.52[0xb6f308d6] ======= Memory map: ======== 08048000-0805b000 r-xp 00000000 08:01 16829 /usr/bin/ffmpeg 0805b000-0805c000 r--p 00012000 08:01 16829 /usr/bin/ffmpeg 0805c000-0805d000 rw-p 00013000 08:01 16829 /usr/bin/ffmpeg 0805d000-08061000 rw-p 00000000 00:00 0 099b6000-09bf9000 rw-p 00000000 00:00 0 [heap] b5d00000-b5d21000 rw-p 00000000 00:00 0 b5d21000-b5e00000 ---p 00000000 00:00 0 b5ef8000-b5ff9000 rw-p 00000000 00:00 0 b61d8000-b6362000 rw-p 00000000 00:00 0 b6362000-b6366000 r-xp 00000000 08:01 35938 /usr/lib/libXdmcp.so.6.0.0 b6366000-b6367000 rw-p 00003000 08:01 35938 /usr/lib/libXdmcp.so.6.0.0 b6367000-b636c000 r-xp 00000000 08:01 48743 /usr/lib/libogg.so.0.6.0 b636c000-b636d000 r--p 00004000 08:01 48743 /usr/lib/libogg.so.0.6.0 b636d000-b636e000 rw-p 00005000 08:01 48743 /usr/lib/libogg.so.0.6.0 b636e000-b63cf000 r-xp 00000000 08:01 81045 /usr/lib/liboil-0.3.so.0.3.0 b63cf000-b63d0000 r--p 00060000 08:01 81045 /usr/lib/liboil-0.3.so.0.3.0 b63d0000-b63e7000 rw-p 00061000 08:01 81045 /usr/lib/liboil-0.3.so.0.3.0 b63e7000-b63e9000 rw-p 00000000 00:00 0 b63e9000-b6405000 r-xp 00000000 08:01 863 /lib/libgcc_s.so.1 b6405000-b6406000 r--p 0001b000 08:01 863 /lib/libgcc_s.so.1 b6406000-b6407000 rw-p 0001c000 08:01 863 /lib/libgcc_s.so.1 b6407000-b64ed000 r-xp 00000000 08:01 60326 /usr/lib/libstdc++.so.6.0.13 b64ed000-b64f1000 r--p 000e6000 08:01 60326 /usr/lib/libstdc++.so.6.0.13 b64f1000-b64f2000 rw-p 000ea000 08:01 60326 /usr/lib/libstdc++.so.6.0.13 b64f2000-b64fa000 rw-p 00000000 00:00 0 b64fa000-b64fc000 r-xp 00000000 08:01 35924 /usr/lib/libXau.so.6.0.0 b64fc000-b64fd000 r--p 00001000 08:01 35924 /usr/lib/libXau.so.6.0.0 b64fd000-b64fe000 rw-p 00002000 08:01 35924 /usr/lib/libXau.so.6.0.0 b64fe000-b651a000 r-xp 00000000 08:01 35949 /usr/lib/libxcb.so.1.1.0 b651a000-b651b000 r--p 0001c000 08:01 35949 /usr/lib/libxcb.so.1.1.0 b651b000-b651c000 rw-p 0001d000 08:01 35949 /usr/lib/libxcb.so.1.1.0 b651c000-b6523000 r-xp 00000000 08:01 1009 /lib/tls/i686/cmov/librt-2.10.1.so b6523000-b6524000 r--p 00006000 08:01 1009 /lib/tls/i686/cmov/librt-2.10.1.so b6524000-b6525000 rw-p 00007000 08:01 1009 /lib/tls/i686/cmov/librt-2.10.1.so b6525000-b6527000 r-xp 00000000 08:01 996 /lib/tls/i686/cmov/libdl-2.10.1.so b6527000-b6528000 r--p 00001000 08:01 996 /lib/tls/i686/cmov/libdl-2.10.1.so b6528000-b6529000 rw-p 00002000 08:01 996 /lib/tls/i686/cmov/libdl-2.10.1.so b6529000-b6537000 r-xp 00000000 08:01 85088 /usr/lib/libraw1394.so.11.0.1 b6537000-b6538000 r--p 0000d000 08:01 85088 /usr/lib/libraw1394.so.11.0.1 b6538000-b6539000 rw-p 0000e000 08:01 85088 /usr/lib/libraw1394.so.11.0.1 b6539000-b653a000 rw-p 00000000 00:00 0 b653a000-b65d8000 r-xp 00000000 08:01 111498 /usr/lib/libxvidcore.so.4.1 b65d8000-b65d9000 r--p 0009d000 08:01 111498 /usr/lib/libxvidcore.so.4.1 b65d9000-b65da000 rw-p 0009e000 08:01 111498 /usr/lib/libxvidcore.so.4.1 b65da000-b664d000 rw-p 00000000 00:00 0 b664d000-b66e6000 r-xp 00000000 08:01 16745 /usr/lib/libx264.so.67 b66e6000-b66e7000 r--p 00098000 08:01 16745 /usr/lib/libx264.so.67 b66e7000-b66e8000 rw-p 00099000 08:01 16745 /usr/lib/libx264.so.67 b66e8000-b66ef000 rw-p 00000000 00:00 0 b66ef000-b6709000 r-xp 00000000 08:01 86411 /usr/lib/libvorbis.so.0.4.0 b6709000-b670a000 r--p 00019000 08:01 86411 /usr/lib/libvorbis.so.0.4.0 b670a000-b6718000 rw-p 0001a000 08:01 86411 /usr/lib/libvorbis.so.0.4.0 b6718000-b6723000 r-xp 00000000 08:01 48773 /usr/lib/libvorbisenc.so.2.0.3 b6723000-b6724000 r--p 0000a000 08:01 48773 /usr/lib/libvorbisenc.so.2.0.3 b6724000-b6814000 rw-p 0000b000 08:01 48773 /usr/lib/libvorbisenc.so.2.0.3 b6814000-b6868000 r-xp 00000000 08:01 81062 /usr/lib/libtheora.so.0.3.4 b6868000-b6869000 r--p 00053000 08:01 81062 /usr/lib/libtheora.so.0.3.4 b6869000-b686a000 rw-p 00054000 08:01 81062 /usr/lib/libtheora.so.0.3.4 b686a000-b6885000 r-xp 00000000 08:01 85195 /usr/lib/sse2/libspeex.so.1.5.0 b6885000-b6886000 r--p 0001a000 08:01 85195 /usr/lib/sse2/libspeex.so.1.5.0 b6886000-b6887000 rw-p 0001b000 08:01 85195 /usr/lib/sse2/libspeex.so.1.5.0 b6887000-b6888000 rw-p 00000000 00:00 0 b6888000-b6907000 r-xp 00000000 08:01 16733 /usr/lib/libschroedinger-1.0.so.0.2.0 b6907000-b6908000 r--p 0007f000 08:01 16733 /usr/lib/libschroedinger-1.0.so.0.2.0 b6908000-b6909000 rw-p 00080000 08:01 16733 /usr/lib/libschroedinger-1.0.so.0.2.0 b6909000-b6926000 r-xp 00000000 08:01 16737 /usr/lib/libopenjpeg-2.1.3.0.so b6926000-b6927000 r--p 0001c000 08:01 16737 /usr/lib/libopenjpeg-2.1.3.0.so b6927000-b6928000 rw-p 0001d000 08:01 16737 /usr/lib/libopenjpeg-2.1.3.0.so b6928000-b6968000 r-xp 00000000 08:01 108043 /usr/lib/libmp3lame.so.0.0.0 b6968000-b6969000 r--p 0003f000 08:01 108043 /usr/lib/libmp3lame.so.0.0.0 b6969000-b696a000 rw-p 00040000 08:01 108043 /usr/lib/libmp3lame.so.0.0.0 b696a000-b699b000 rw-p 00000000 00:00 0 b699b000-b69a7000 r-xp 00000000 08:01 16727 /usr/lib/libgsm.so.1.0.12 b69a7000-b69a8000 r--p 0000c000 08:01 16727 /usr/lib/libgsm.so.1.0.12 b69a8000-b69a9000 rw-p 0000d000 08:01 16727 /usr/lib/libgsm.so.1.0.12 b69a9000-b69e4000 r-xp 00000000 08:01 108006 /usr/lib/libfaad.so.0.0.0 b69e4000-b69e5000 ---p 0003b000 08:01 108006 /usr/lib/libfaad.so.0.0.0 b69e5000-b69e6000 r--p 0003b000 08:01 108006 /usr/lib/libfaad.so.0.0.0 b69e6000-b69e9000 rw-p 0003c000 08:01 108006 /usr/lib/libfaad.so.0.0.0 b69e9000-b69ea000 rw-p 00000000 00:00 0 b69ea000-b6a7a000 r-xp 00000000 08:01 16724 /usr/lib/libdirac_encoder.so.0.1.0 b6a7a000-b6a7c000 r--p 0008f000 08:01 16724 /usr/lib/libdirac_encoder.so.0.1.0 b6a7c000-b6a7d000 rw-p 00091000 08:01 16724 /usr/lib/libdirac_encoder.so.0.1.0 b6a7d000-b6a7e000 rw-p 00000000 00:00 0 b6a7e000-b6a8e000 r-xp 00000000 08:01 4407 /lib/libbz2.so.1.0.4 b6a8e000-b6a8f000 r--p 0000f000 08:01 4407 /lib/libbz2.so.1.0.4 b6a8f000-b6a90000 rw-p 00010000 08:01 4407 /lib/libbz2.so.1.0.4 b6a90000-b6aa4000 r-xp 00000000 08:01 3920 /lib/libz.so.1.2.3.3Aborted