C:\ffmpeg\bin>ffmpeg -i 1.avi -vcodec copy -acodec copy -ss 12:15:00 -t 12:27:00
 output3.avi
ffmpeg version N-65018-gad91bf8 Copyright (c) 2000-2014 the FFmpeg developers
  built on Jul 26 2014 22:01:46 with gcc 4.8.3 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-lib
modplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrw
b --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinge
r --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --en
able-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis
 --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-
libx265 --enable-libxavs --enable-libxvid --enable-decklink --enable-zlib
  libavutil      52. 92.101 / 52. 92.101
  libavcodec     55. 69.100 / 55. 69.100
  libavformat    55. 49.100 / 55. 49.100
  libavdevice    55. 13.102 / 55. 13.102
  libavfilter     4. 11.102 /  4. 11.102
  libswscale      2.  6.100 /  2.  6.100
  libswresample   0. 19.100 /  0. 19.100
  libpostproc    52.  3.100 / 52.  3.100
[avi @ 02d7b040] sample size (384) != block align (1152)
[avi @ 02d7b040] Could not find codec parameters for stream 1 (Audio: mp3 (U[0][
0][0] / 0x0055), 48000 Hz, 2 channels, s16p, 128 kb/s): unspecified frame size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Guessed Channel Layout for  Input Stream #0.1 : stereo
Input #0, avi, from '1.avi':
  Metadata:
    encoder         : Lavf55.49.100
  Duration: N/A, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: mpeg4 (Advanced Simple Profile) (XVID / 0x44495658), yuv
420p, 624x352 [SAR 1:1 DAR 39:22], 23.98 fps, 23.98 tbr, 23.98 tbn, 23.98 tbc
    Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, 2 channels, s16p, 1
28 kb/s
File 'output3.avi' already exists. Overwrite ? [y/N] y
Output #0, avi, to 'output3.avi':
  Metadata:
    ISFT            : Lavf55.49.100
    Stream #0:0: Video: mpeg4 (XVID / 0x44495658), yuv420p, 624x352 [SAR 1:1 DAR
 39:22], q=2-31, 23.98 fps, 23.98 tbn, 23.98 tbc
    Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, 128 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=    0 fps=0.0 q=-1.0 Lsize=      10kB time=00:00:00.00 bitrate=N/A
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing ove
rhead: unknown

C:\ffmpeg\bin>