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• drawbox don't work on remote server and works on local

  5 décembre 2015, par efpies

  I’ve got a completely weird problem.

  I need to draw the text over the filled rectangle. The problem is that the command line command that work on my local machine don’t work on the server ! To be precise, only drawbox command don’t work.

  Here’s the command.

  ffmpeg -i shake.mp4 -vf "scale=300:150,setsar=1/1,drawbox=w=300: h=16: x=0: y=134: color=0x1a5757: t=1000000,drawtext=x=5: y=136: fontfile=Arial.ttf: text='fdsf': fontcolor=0xd44e4e"  -c:v h264 -preset medium -b:v 256k  -f mp4 shake_conv.mp4

  Clarification

  It seems, that my question is unclear. Ok, here’s clarification.

  I need to draw the text over the filled rectangle.

  It means, that, at first, I have a video. Then I would like to draw a bar at the [0 ; 134] with width 300px and height 16px, painted with #1A5757 color. And over that bar should be placed a text.

  The problem is that the command line command that work on my local machine don’t work on the server !

  It means that I have 2 environments : local machine (my Mac OS X 10.9.2 with ffmpeg 2.0.2 installed) and the server (Debian 7 with ffmpeg 1.0.8 installed. Quite old, dunno, but no errors were in this case ; can’t find any info about version dependency).

  The last part,

  the command line command that work on my local machine don’t work on the server

  To be precise, only drawbox command don’t work.

  means that the same command above draws the bar I need in my local environment but don’t draw it on the server side. The text is drawed correctly in both cases. One more time : the text is drawed, the bar isn’t drawed. That’s my problem. I need a bar over the video. And there aren’t any bars when I execute this command on server.

  Now, I hope, this is quite clear.

  Here’s the output.

  ffmpeg version 1.0.8 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Sep 12 2013 11:57:09 with gcc 4.7 (Debian 4.7.2-5)
  
    configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security ' --extra-ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-nonfree --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-libvpx --enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter --enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/x86_64-linux-gnu --disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-frei0r --enable-openssl --enable-libass --enable-libopus --enable-fontconfig --enable-libfdk-aac --enable-libdc1394 --disable-altivec --dis  libavutil      51. 73.101 / 51. 73.101
  
    libavcodec     54. 59.100 / 54. 59.100
  
    libavformat    54. 29.104 / 54. 29.104
  
    libavdevice    54.  2.101 / 54.  2.101
  
    libavfilter     3. 17.100 /  3. 17.100
  
    libswscale      2.  1.101 /  2.  1.101
  
    libswresample   0. 15.100 /  0. 15.100
  
    libpostproc    52.  0.100 / 52.  0.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'shake.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      creation_time   : 1970-01-01 00:00:00
  
      encoder         : Lavf52.40.0
  
    Duration: 00:00:29.24, start: 0.000000, bitrate: 2243 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, 2111 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc
  
      Metadata:
  
        creation_time   : 1970-01-01 00:00:00
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 127 kb/s
  
      Metadata:
  
        creation_time   : 1970-01-01 00:00:00
  
        handler_name    : SoundHandler
  
  File 'llll.mp4' already exists. Overwrite ? [y/N] y
  
  using SAR=1/1
  
  [libx264 @ 0x229e7a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0x229e7a0] profile High, level 1.3
  
  [libx264 @ 0x229e7a0] 264 - core 132 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options:  cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=256 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to 'llll.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf54.29.104
  
      Stream #0:0(und): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 300x150 [SAR 1:1 DAR 2:1], q=-1--1, 256 kb/s, 25 tbn, 25 tbc
  
      Metadata:
  
        creation_time   : 1970-01-01 00:00:00
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128 kb/s
  
      Metadata:
  
        creation_time   : 1970-01-01 00:00:00
  
        handler_name    : SoundHandler
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 -> libx264)
  
    Stream #0:1 -> #0:1 (aac -> libfaac)
  
  Press [q] to stop, [?] for help
  
  SSR not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0x228d5c0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
  
  Error while decoding stream #0:1: Operation not permitted
  
  SSR not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0x228d5c0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
  
  Error while decoding stream #0:1: Operation not permitted
  
  [aac @ 0x228d5c0] SSR not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0x228d5c0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
  
  Error while decoding stream #0:1: Operation not permitted
  
  [aac @ 0x228d5c0] SSR not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0x228d5c0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
  
  Error while decoding stream #0:1: Operation not permitted
  
  [aac @ 0x228d5c0] SSR not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0x228d5c0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
  
  Error while decoding stream #0:1: Operation not permitted
  
  [aac @ 0x228d5c0] SSR not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0x228d5c0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
  
  Error while decoding stream #0:1: Operation not permitted
  
  [aac @ 0x228d5c0] SSR not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0x228d5c0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
  
  Error while decoding stream #0:1: Operation not permitted
  
  [aac @ 0x228d5c0] SSR not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0x228d5c0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
  
  Error while decoding stream #0:1: Operation not permitted
  
  [aac @ 0x228d5c0] SSR not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0x228d5c0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
  
  Error while decoding stream #0:1: Operation not permitted
  
  [aac @ 0x228d5c0] SSR not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0x228d5c0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
  
  Error while decoding stream #0:1: Operation not permitted
  
  SSR not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0x228d5c0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
  
  Error while decoding stream #0:1: Operation not permitted
  
  [aac @ 0x228d5c0] channel element 1.15 is not allocated
  
  Error while decoding stream #0:1: Operation not permitted
  
  [aac @ 0x228d5c0] SSR not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0x228d5c0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
  
  Error while decoding stream #0:1: Operation not permitted
  
  [aac @ 0x228d5c0] SSR not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0x228d5c0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
  
  Error while decoding stream #0:1: Operation not permitted
  
  [aac @ 0x228d5c0] SSR not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0x228d5c0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
  
  Error while decoding stream #0:1: Operation not permitted
  
  [aac @ 0x228d5c0] SSR not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0x228d5c0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
  
  Error while decoding stream #0:1: Operation not permitted
  
  [aac @ 0x228d5c0] TYPE_FIL: Input buffer exhausted before END element found
  
  Error while decoding stream #0:1: Operation not permitted
  
  Multiple frames in a packet from stream 1
  
  [aac @ 0x228d5c0] channel element 3.11 is not allocated
  
  Error while decoding stream #0:1: Operation not permitted
  
  [aac @ 0x228d5c0] SSR not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0x228d5c0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
  
  Error while decoding stream #0:1: Operation not permitted
  
  [aac @ 0x228d5c0] SSR not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0x228d5c0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
  
  Error while decoding stream #0:1: Operation not permitted
  
  [aac @ 0x228d5c0] SSR not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0x228d5c0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
  
  Error while decoding stream #0:1: Operation not permitted
  
  SSR not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0x228d5c0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
  
  Error while decoding stream #0:1: Operation not permitted
  
  [aac @ 0x228d5c0] SSR not implemented. Update your FFmpeg version to the newest one from Git. If the problem still occurs, it means that your file has a feature which has not been implemented.
  
  [aac @ 0x228d5c0] If you want to help, upload a sample of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel mailing list.
  
  Error while decoding stream #0:1: Operation not permitted
  
  frame=  731 fps=244 q=32766.0 Lsize=    1497kB time=00:00:29.16 bitrate= 420.6kbits/s    
  
  video:1028kB audio:447kB subtitle:0 global headers:0kB muxing overhead 1.533339%
  
  [libx264 @ 0x229e7a0] frame I:5     Avg QP:27.90  size:  6997
  
  [libx264 @ 0x229e7a0] frame P:578   Avg QP:28.74  size:  1732
  
  [libx264 @ 0x229e7a0] frame B:148   Avg QP:25.26  size:   107
  
  [libx264 @ 0x229e7a0] consecutive B-frames: 59.5% 40.5%  0.0%  0.0%
  
  [libx264 @ 0x229e7a0] mb I  I16..4: 25.6%  9.1% 65.4%
  
  [libx264 @ 0x229e7a0] mb P  I16..4:  2.1%  1.1%  3.8%  P16..4: 12.3% 15.3% 15.6%  0.0%  0.0%    skip:49.7%
  
  [libx264 @ 0x229e7a0] mb B  I16..4:  0.8%  0.0%  0.0%  B16..8: 17.6%  3.3%  0.9%  direct: 0.5%  skip:76.9%  L0:39.7% L1:57.5% BI: 2.8%
  
  [libx264 @ 0x229e7a0] final ratefactor: 26.03
  
  [libx264 @ 0x229e7a0] 8x8 transform intra:14.3% inter:23.4%
  
  [libx264 @ 0x229e7a0] coded y,uvDC,uvAC intra: 54.1% 68.9% 58.9% inter: 17.7% 19.5% 10.0%
  
  [libx264 @ 0x229e7a0] i16 v,h,dc,p: 58% 33%  5%  4%
  
  [libx264 @ 0x229e7a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 12% 22%  6%  6%  8%  7%  9% 10%
  
  [libx264 @ 0x229e7a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 19% 20%  5%  5%  7%  8%  6%  6%
  
  [libx264 @ 0x229e7a0] i8c dc,h,v,p: 50% 25% 19%  6%
  
  [libx264 @ 0x229e7a0] Weighted P-Frames: Y:2.6% UV:1.7%
  
  [libx264 @ 0x229e7a0] ref P L0: 70.2% 11.0% 10.1%  8.5%  0.1%
  
  [libx264 @ 0x229e7a0] ref B L0: 94.3%  5.7%
  
  [libx264 @ 0x229e7a0] kb/s:287.75

• Revision 4664b219a2 : vp9_ratectrl : change ARF overlays rate correction factor ARF overlays now use t

  6 avril 2014, par Guillaume Martres

  Changed Paths :
   Modify /vp9/encoder/vp9_ratectrl.c

  
  
  vp9_ratectrl : change ARF overlays rate correction factor

  ARF overlays now use the same rate correction factor as regular inter
  frames, further testing would be needed to see if it makes sense to use
  a completely separate rate correction factor for ARF overlays.

  $ vpxenc —cpu-used=5 —fps=50/1 —target-bitrate=2000
  parkjoy.y4m -o out.webm
  => Before : 3356 kb/s
  => After : 2271 kb/s

  Change-Id : I73e4defa615ba7a8a2bdb845864f4b1721cbbffe

• ffmpeg trying to remove the first few seconds of video

  21 octobre 2011, par zeroasterisk

  I'm trying to remove a few seconds off the front of a video stream (audio already excluded), and I'm getting strange results : I would think that for every second I increase -ss by, the resulting file would be a second shorter... that doesn't seem to be the case.

  original     ==> 01:04:52.84
  
  -ss 19       ==> 01:04:42.84 (diff = 10) [command history shown below]
  
  -ss 20       ==> 01:04:32.84 (diff = 20) [command history shown below]
  
  -ss 21       ==> 01:04:32.84 (diff = 20)
  
  -ss 25       ==> 01:04:32.84 (diff = 20)
  
  -ss 0:0:25.0 ==> 01:04:32.84 (diff = 20)
  
  -ss 0:0:25.5 ==> 01:04:32.84 (diff = 20) [command history shown below]

  Command : ffmpeg -ss # -i temp.mp4 -y -vcodec copy  temp_croppedFromStart.mp4

  Here's the command history for 19 & 20

  # ffmpeg -ss 19 -i temp.mp4 -y -vcodec copy  temp_croppedFromStart.mp4; ffmpeg -i temp.mp4 2>&1 | grep Duration; ffmpeg -i temp_croppedFromStart.mp4 2>&1 | grep Duration
  
  ffmpeg version N-31809-g9acffed, Copyright (c) 2000-2011 the FFmpeg developers
  
    built on Aug 10 2011 21:25:11 with gcc 4.4.5
  
    configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab
  
    libavutil    51. 11. 1 / 51. 11. 1
  
    libavcodec   53. 10. 0 / 53. 10. 0
  
    libavformat  53.  6. 0 / 53.  6. 0
  
    libavdevice  53.  2. 0 / 53.  2. 0
  
    libavfilter   2. 28. 1 /  2. 28. 1
  
    libswscale    2.  0. 0 /  2.  0. 0
  
    libpostproc  51.  2. 0 / 51.  2. 0
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'temp.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      creation_time   : 1970-01-01 00:00:00
  
      encoder         : Lavf53.6.0
  
    Duration: 01:04:52.84, start: 0.000000, bitrate: 553 kb/s
  
      Stream #0.0(und): Video: h264 (Constrained Baseline), yuv420p, 960x640, 552 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc
  
      Metadata:
  
        creation_time   : 1970-01-01 00:00:00
  
  Output #0, mp4, to 'temp_croppedFromStart.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      creation_time   : 1970-01-01 00:00:00
  
      encoder         : Lavf53.6.0
  
      Stream #0.0(und): Video: libx264, yuv420p, 960x640, q=2-31, 552 kb/s, 25 tbn, 25 tbc
  
      Metadata:
  
        creation_time   : 1970-01-01 00:00:00
  
  Stream mapping:
  
    Stream #0.0 -> #0.0
  
  Press [q] to stop, [?] for help
  
  frame=97071 fps=42523 q=-1.0 Lsize=  262684kB time=01:04:33.84 bitrate= 555.5kbits/s
  
  video:261923kB audio:0kB global headers:0kB muxing overhead 0.290418%
  
    Duration: 01:04:52.84, start: 0.000000, bitrate: 553 kb/s
  
    Duration: 01:04:42.84, start: 0.000000, bitrate: 554 kb/s
  
  
  
  
  
  # ffmpeg -ss 20 -i temp.mp4 -y -vcodec copy  temp_croppedFromStart.mp4; ffmpeg -i temp.mp4 2>&1 | grep Duration; ffmpeg -i temp_croppedFromStart.mp4 2>&1 | grep Duration
  
  ffmpeg version N-31809-g9acffed, Copyright (c) 2000-2011 the FFmpeg developers
  
    built on Aug 10 2011 21:25:11 with gcc 4.4.5
  
    configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab
  
    libavutil    51. 11. 1 / 51. 11. 1
  
    libavcodec   53. 10. 0 / 53. 10. 0
  
    libavformat  53.  6. 0 / 53.  6. 0
  
    libavdevice  53.  2. 0 / 53.  2. 0
  
    libavfilter   2. 28. 1 /  2. 28. 1
  
    libswscale    2.  0. 0 /  2.  0. 0
  
    libpostproc  51.  2. 0 / 51.  2. 0
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'temp.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      creation_time   : 1970-01-01 00:00:00
  
      encoder         : Lavf53.6.0
  
    Duration: 01:04:52.84, start: 0.000000, bitrate: 553 kb/s
  
      Stream #0.0(und): Video: h264 (Constrained Baseline), yuv420p, 960x640, 552 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc
  
      Metadata:
  
        creation_time   : 1970-01-01 00:00:00
  
  Output #0, mp4, to 'temp_croppedFromStart.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      creation_time   : 1970-01-01 00:00:00
  
      encoder         : Lavf53.6.0
  
      Stream #0.0(und): Video: libx264, yuv420p, 960x640, q=2-31, 552 kb/s, 25 tbn, 25 tbc
  
      Metadata:
  
        creation_time   : 1970-01-01 00:00:00
  
  Stream mapping:
  
    Stream #0.0 -> #0.0
  
  Press [q] to stop, [?] for help
  
  frame=96821 fps=47168 q=-1.0 Lsize=  262003kB time=01:04:32.84 bitrate= 554.2kbits/s
  
  video:261244kB audio:0kB global headers:0kB muxing overhead 0.290410%
  
    Duration: 01:04:52.84, start: 0.000000, bitrate: 553 kb/s
  
    Duration: 01:04:32.84, start: 0.000000, bitrate: 554 kb/s
  
  
  
  # ffmpeg -ss 0:0:25.5 -i temp.mp4 -y -vcodec copy  temp_croppedFromStart.mp4; ffmpeg -i temp.mp4 2>&1 | grep Duration; ffmpeg -i temp_croppedFromStart.mp4 2>&1 | grep Duration
  
  ffmpeg version N-31809-g9acffed, Copyright (c) 2000-2011 the FFmpeg developers
  
    built on Aug 10 2011 21:25:11 with gcc 4.4.5
  
    configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab
  
    libavutil    51. 11. 1 / 51. 11. 1
  
    libavcodec   53. 10. 0 / 53. 10. 0
  
    libavformat  53.  6. 0 / 53.  6. 0
  
    libavdevice  53.  2. 0 / 53.  2. 0
  
    libavfilter   2. 28. 1 /  2. 28. 1
  
    libswscale    2.  0. 0 /  2.  0. 0
  
    libpostproc  51.  2. 0 / 51.  2. 0
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'temp.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      creation_time   : 1970-01-01 00:00:00
  
      encoder         : Lavf53.6.0
  
    Duration: 01:04:52.84, start: 0.000000, bitrate: 553 kb/s
  
      Stream #0.0(und): Video: h264 (Constrained Baseline), yuv420p, 960x640, 552 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc
  
      Metadata:
  
        creation_time   : 1970-01-01 00:00:00
  
  Output #0, mp4, to 'temp_croppedFromStart.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      creation_time   : 1970-01-01 00:00:00
  
      encoder         : Lavf53.6.0
  
      Stream #0.0(und): Video: libx264, yuv420p, 960x640, q=2-31, 552 kb/s, 25 tbn, 25 tbc
  
      Metadata:
  
        creation_time   : 1970-01-01 00:00:00
  
  Stream mapping:
  
    Stream #0.0 -> #0.0
  
  Press [q] to stop, [?] for help
  
  frame=96821 fps=45920 q=-1.0 Lsize=  262003kB time=01:04:27.32 bitrate= 555.0kbits/s
  
  video:261244kB audio:0kB global headers:0kB muxing overhead 0.290424%
  
    Duration: 01:04:52.84, start: 0.000000, bitrate: 553 kb/s
  
    Duration: 01:04:32.84, start: 0.000000, bitrate: 554 kb/s