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• Converting from MXF to MPEG format with FFmpeg [migrated]

  2 mars 2013, par user2060812

  We're trying to convert .mxf video to .mpeg on ffmpeg-0.9.2 and looks like 0.9.2 version doesn't support .mxf conversion to .mpeg.

  We don't want to switch on latest 0.11 version of ffmpeg as the video result is too poor for latest version. Maybe we're not using the right command to convert .mxf format.

  Below is the error on conversion command :

  [root@localhost ~]# ffmpeg -i test.mxf  -ac 2 output.mpg                                                                                     ffmpeg version 0.9.2-syslint, Copyright (c) 2000-2012 the FFmpeg developers
  
    built on Mar  1 2013 22:34:33 with gcc 4.6.3
  
    configuration: --prefix=/usr/local/cpffmpeg --enable-shared --enable-nonfree --enable-gpl --enable-pthreads --enable-libopencore-amrnb --enable-decoder=liba52 --enable-libopencore-amrwb --enable-libfaac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --extra-cflags=-I/usr/local/cpffmpeg/include/ --extra-ldflags=-L/usr/local/cpffmpeg/lib --enable-version3 --extra-version=syslint
  
    libavutil    51. 32. 0 / 51. 54.100
  
    libavcodec   53. 42. 4 / 53. 42. 4
  
    libavformat  53. 24. 2 / 53. 24. 2
  
    libavdevice  53.  4. 0 / 53.  4. 0
  
    libavfilter   2. 53. 0 /  2. 77.100
  
    libswscale    2.  1. 0 /  2.  1.100
  
    libpostproc  51.  2. 0 / 51.  2. 0
  
  Input #0, mxf, from `test.mxf`:
  
    Duration: 00:00:07.04, start: 0.000000, bitrate: 62580 kb/s
  
      Stream #0:0: Video: mpeg2video (4:2:2), yuv422p, 720x608 [SAR 608:405 DAR 16:9], 50000 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc
  
      Stream #0:1: Audio: pcm_s16le, 48000 Hz, 8 channels, s16, 6144 kb/s
  
  File `output.mpg` already exists. Overwrite ? [y/N] y
  
  Incompatible pixel format `yuv422p` for codec `mpeg1video`, auto-selecting format `yuv420p`
  
  [buffer @ 0x8476e0] w:720 h:608 pixfmt:yuv422p tb:1/1000000 sar:608/405 sws_param:
  
  [buffersink @ 0x847b80] auto-inserting filter `auto-inserted scaler 0` between the filter `src` and the filter `out`
  
  [scale @ 0x848220] w:720 h:608 fmt:yuv422p sar:608/405 -> w:720 h:608 fmt:yuv420p sar:608/405 flags:0x4
  
  [mpeg @ 0x84a7a0] VBV buffer size not set, muxing may fail
  
  Output #0, mpeg, to `output.mpg`:
  
    Metadata:
  
      encoder         : Lavf53.24.2
  
      Stream #0:0: Video: mpeg1video, yuv420p, 720x608 [SAR 608:405 DAR 16:9], q=2-31, 200 kb/s, 90k tbn, 25 tbc
  
      Stream #0:1: Audio: mp2, 48000 Hz, 2 channels, s16, 128 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mpeg2video -> mpeg1video)
  
    Stream #0:1 -> #0:1 (pcm_s16le -> mp2)
  
  Press [q] to stop, [?] for help
  
  [buffer @ 0x8476e0] Changing frame properties on the fly is not supported.
  
  Failed to inject frame into filter network

• How do i convert a transparent .mov-file to an mp4 file overlayed on a background-image using FFMPEG [migrated]

  5 mars 2013, par Ernie

  I'm trying to convert a mov file with the following specs :

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mov':
  
  Metadata:
  
      major_brand     : qt  
  
      minor_version   : 537199360
  
      compatible_brands: qt  
  
      creation_time   : 2012-10-09 13:34:01
  
  Duration: 00:00:51.60, start: 0.000000, bitrate: 217433 kb/s
  
      Stream #0:0(eng): Video: prores (ap4h / 0x68347061), yuv444p10le, 1920x1080, 215844 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 25 tbn, 25 tbc
  
      Metadata:
  
          creation_time   : 2012-10-09 13:34:01
  
          handler_name    : Apple Alias Data Handler
  
          timecode        : 01:00:00:00
  
      Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, stereo, s16, 1536 kb/s
  
      Metadata:
  
          creation_time   : 2012-10-09 13:34:01
  
          handler_name    : Apple Alias Data Handler
  
      Stream #0:2(eng): Data: none (tmcd / 0x64636D74)
  
      Metadata:
  
          creation_time   : 2012-10-09 13:42:30
  
          handler_name    : Apple Alias Data Handler
  
          timecode        : 01:00:00:00

  I want a background-image with that video on top of it and save it as an mp4-file. In the meantime the video has to be scaled and cropped
  I need a solution which can be automated and placed on a server, that is why i tried ffmpeg

  This is wat have at the moment :

  ffmpeg -loop 1 -f image2 -i background.png -r 25 -an -vcodec libx264 -b:v 1500k -vf "movie=test.mov[movie];[movie]scale=max(552\, 420*iw/ih):-1[OUT1]; [OUT1]crop=552:420[OUT2]; [0][OUT2] overlay=0:0 [out]" -s 552x420 -y output.mp4

  The problem is, somehow, the transparency is lost, and the background is black, instead of the underlying image. When i try the same ffmpeg command with a transparent FLV as input, it works, but i would like it to work without having to convert al source files first to another format

  Any help with this would be greatly appreciated !

  This is my current ffmpeg configuration :

  ffmpeg version 1.1.2 Copyright (c) 2000-2013 the FFmpeg developers
  
  built on Mar  4 2013 11:19:29 with Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn)
  
  configuration: --prefix=/opt/local --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis --enable-libopus --enable-libtheora --enable-libschroedinger --enable-libopenjpeg --enable-libmodplug --enable-libvpx --enable-libspeex --enable-libfreetype --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/clang --arch=x86_64 --enable-yasm --enable-gpl --enable-postproc --enable-libx264 --enable-libxvid --enable-nonfree --enable-libfaac
  
      libavutil      52. 13.100 / 52. 13.100
  
      libavcodec     54. 86.100 / 54. 86.100
  
      libavformat    54. 59.106 / 54. 59.106
  
      libavdevice    54.  3.102 / 54.  3.102
  
      libavfilter     3. 32.100 /  3. 32.100
  
      libswscale      2.  1.103 /  2.  1.103
  
      libswresample   0. 17.102 /  0. 17.102
  
      libpostproc    52.  2.100 / 52.  2.100

• Pipe and regex bash ouput

  13 mars 2013, par Wes

  I'm trying to get the dimensions of a video with ffmpeg. I use the command ffprobe video.mov to get the following data :

  ffprobe version 1.0 Copyright (c) 2007-2012 the FFmpeg developers
  
    built on Jan 14 2013 10:18:07 with Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/1.0 --enable-shared --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --cc=cc --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid
  
    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 'linebubble.mov':
  
    Metadata:
  
      major_brand     : qt
  
      minor_version   : 0
  
      compatible_brands: qt
  
      creation_time   : 2013-03-12 02:59:34
  
    Duration: 00:00:14.05, start: 0.050000, bitrate: 135 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 502x288 [SAR 1:1 DAR 251:144], 137 kb/s, 7.84 fps, 60 tbr, 6k tbn, 12k tbc
  
      Metadata:
  
        creation_time   : 2013-03-12 02:59:34
  
        handler_name    : Core Media Data Handler

  Now I want to pipe that into a regex to just get 502x288 on the fourth last line.

  I've seen some solutions with python and perl, but I want this to be in plain bash. How would I go about this ?