open source (and in MacPorts) video cut with Flash video support

[Fyodor Vassiley]

I tried with ffmpeg, but output is 0 MB

> ls -alh test.flv
-rw-r--r--  1 fyodor  staff     0B Oct 19 20:55 test.flv

I used howto here
http://superuser.com/questions/138331/using-ffmpeg-to-cut-up-video

> ffmpeg -ss 05:25:00 -t 00:35:00 -i input.flv -vcodec copy -acodec copy test.flv
ffmpeg version 0.7.6, Copyright (c) 2000-2011 the FFmpeg developers
  built on Oct  5 2011 05:02:57 with gcc 4.2.1 (Apple Inc. build 5666) (dot 3)
  configuration: --prefix=/opt/local --enable-gpl --enable-postproc
--enable-swscale --enable-avfilter --enable-libmp3lame
--enable-libvorbis --enable-libtheora --enable-libdirac
--enable-libschroedinger --enable-libopenjpeg --enable-libxvid
--enable-libx264 --enable-libvpx --enable-libspeex
--mandir=/opt/local/share/man --enable-shared --enable-pthreads
--cc=/usr/bin/gcc-4.2 --arch=x86_64 --enable-yasm
  libavutil    50. 43. 0 / 50. 43. 0
  libavcodec   52.122. 0 / 52.122. 0
  libavformat  52.110. 0 / 52.110. 0
  libavdevice  52.  5. 0 / 52.  5. 0
  libavfilter   1. 80. 0 /  1. 80. 0
  libswscale    0. 14. 1 /  0. 14. 1
  libpostproc  51.  2. 0 / 51.  2. 0
[flv @ 0x7faf2404ac00] Estimating duration from bitrate, this may be inaccurate
Input #0, flv, from 'input.flv':
  Metadata:
    duration        : 656
    starttime       : 0
    totalduration   : 656
    width           : 640
    height          : 480
    videodatarate   : 1141
    audiodatarate   : 129
    totaldatarate   : 1279
    framerate       : 30
    bytelength      : 104890584
    canseekontime   : true
    sourcedata      : BC1F7C149MM1318603911906979
    purl            :
    pmsg            :
  Duration: 00:10:56.13, start: 0.000000, bitrate: 1300 kb/s
    Stream #0.0: Video: h264 (Main), yuv420p, 640x480, 1168 kb/s, 30
tbr, 1k tbn, 60 tbc
    Stream #0.1: Audio: aac, 44100 Hz, stereo, s16, 131 kb/s
File 'test.flv' already exists. Overwrite ? [y/N] y
Output #0, flv, to 'test.flv':
  Metadata:
    duration        : 656
    starttime       : 0
    totalduration   : 656
    width           : 640
    height          : 480
    videodatarate   : 1141
    audiodatarate   : 129
    totaldatarate   : 1279
    framerate       : 30
    bytelength      : 104890584
    canseekontime   : true
    sourcedata      : BC1F7C149MM1318603911906979
    purl            :
    pmsg            :
    encoder         : Lavf52.110.0
    Stream #0.0: Video: libx264, yuv420p, 640x480, q=2-31, 1168 kb/s,
1k tbn, 30 tbc
    Stream #0.1: Audio: aac, 44100 Hz, stereo, 131 kb/s
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
Press [q] to stop, [?] for help
frame=    0 fps=  0 q=-1.0 Lsize=       0kB time=00:00:00.00 bitrate=
 0.0kbits/s
video:0kB audio:0kB global headers:0kB muxing overhead nan%