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• How can I convert .MTS file (AVCHD) to .mp4 by ffmpeg without re-encoding H264 video stream correctly ?

  2 septembre 2014, par kaorukobo

  ---

  I posted an same question to another community Video Production that I’ve found later, and which seems to be a better place for this question :

  See : http://video.stackexchange.com/questions/12156/how-can-i-convert-mts-file-avchd-to-mp4-by-ffmpeg-without-re-encoding-h264-v/

  ---

  1. What I tried

  I have some .MTS (AVCHD format) files recoreded with my AVCHD camera. Its specification is as shown below :

  $ ffprobe 140612_Canon-00000.MTS 
  
  ffprobe version 2.2.1 Copyright (c) 2007-2014 the FFmpeg developers
  
  (snip)
  
  Input #0, mpegts, from '140612_Canon-00000.MTS':
  
    Duration: 00:48:58.40, start: 0.800300, bitrate: 5563 kb/s
  
    Program 1 
  
      Stream #0:0[0x1011]: Video: h264 (High) (HDMV / 0x564D4448), 
  
        yuv420p, 1440x1080 [SAR 4:3 DAR 16:9], 
  
        29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
  
      Stream #0:1[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 
  
        stereo, fltp, 256 kb/s

  Pay attention to the part of framerate/timebase : 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc

  Now I’d like to convert this file to .mp4 file, without re-encoding H264 video stream, on the other hand, with transcoding its audio stream to AAC.
  So I tried the following command :

  ffmpeg -i 140612_Canon-00000.MTS -t 60 -y -vcodec copy -acodec libfaac -ab 128k 140612_Canon-00001.MTS.mp4

  2. Result

  and output file’s specification is as shown below :

  $ ffprobe 140612_Canon-00000.MTS.mp4
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '140612_Canon-00000.MTS.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.33.100
  
  
  
    Duration: 00:01:00.04, start: 0.021333, bitrate: 4590 kb/s
  
  
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 
  
          1440x1080 [SAR 4:3 DAR 16:9], 4448 kb/s, 
  
          59.94 fps, 59.94 tbr, 90k tbn, 59.94 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
  
  
      Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 
  
          48000 Hz, stereo, fltp, 128 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler

  Look at the part of framerate/timebase : 59.94 fps, 59.94 tbr, 90k tbn, 59.94 tbc.
  Although ffmpeg just copied the video stream, framerate and timebase has been changed to twice value.

  So, when I open and playback the output file with QuickTime Player or VLC Player,
  the audio has no problem, however, the video stream is not played correctly.
  The video is played back with having its frame forward and backward quiveringly repeatedly.

  3. Question

  1. How can I convert .MTS file (AVCHD) to .mp4 by ffmpeg without re-encoding H264 video stream correctly ?
  2. How can I keep the original framerate/timebase values (fps/tbr/tbn/tbc) when I convert the container with ffmpeg and its -vcodec copy switch.
  3. How can I set framerate/timebase values (fps/tbr/tbn/tbc) by ffmpeg’s command line options without re-encoding a video stream.

  Any ideas ?

• Trouble trying to update ffmpeg

  14 juillet 2014, par AreKay

  i installed ffmpeg through svn
  svn checkout svn://svn.ffmpeg.org/ffmpeg/trunk
  and since ffmpeg does not support it now i am unable to update it.

  i tried updating it through git. it did get updated. But still its stuck in the old version.
  also tried to update it through macports it got installed. but when i type ffmpeg it still shows the older version.

  FFmpeg version SVN-r26402, Copyright (c) 2000-2011 the FFmpeg developers
 built on Jul 10 2014 10:49:39 with clang 5.1 (clang-503.0.40)
 configuration: --enable-libmp3lame --enable-shared --disable-mmx --arch=x86_64
 libavutil     50.36. 0 / 50.36. 0
 libavcore      0.16. 1 /  0.16. 1
 libavcodec    52.108. 0 / 52.108. 0
 libavformat   52.93. 0 / 52.93. 0
 libavdevice   52. 2. 3 / 52. 2. 3
 libavfilter    1.74. 0 /  1.74. 0
 libswscale     0.12. 0 /  0.12. 0
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
Use -h to get full help or, even better, run 'man ffmpeg'

  it would be great if someone could help me out here in updating ffmpeg.

• Encoder (codec mp3) not found for output stream #0:0 , ffmpeg

  14 juillet 2014, par AreKay

  i am running ffmpeg on mac os x.
  while extracting audio file from a video i am getting an error as Encoder (codec mp3) not found for output stream #0:0

  this question was already asked but that was for ubuntu and i did try (using macports) port install libavcodec-extras-53 but it showed an error as libavcodec-extras-53 was not found.

  this was what came in terminal.

  Rajaths-MacBook-Pro:desktop RK$ ffmpeg -i 1.mp4 3.mp3<br />
ffmpeg version N-64663-ga65d6e1 Copyright (c) 2000-2014 the FFmpeg developers<br />
 built on Jul 15 2014 02:20:47 with Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM    3.4svn)<br />
 configuration:<br />
 libavutil      52. 92.100 / 52. 92.100<br />
 libavcodec     55. 69.100 / 55. 69.100<br />
 libavformat    55. 47.100 / 55. 47.100<br />
 libavdevice    55. 13.102 / 55. 13.102<br />
 libavfilter     4. 10.100 /  4. 10.100<br />
 libswscale      2.  6.100 /  2.  6.100<br />
 libswresample   0. 19.100 /  0. 19.100<br />
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mp4':<br />
 Metadata:<br />
   major_brand     : isom<br />
   minor_version   : 512<br />
   compatible_brands: isomiso2mp41<br />
   encoder         : Lavf55.47.100
 Duration: 00:00:39.05, start: 0.020227, bitrate: 408 kb/s<br />
   Stream #0:0(und): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 274 kb/s, 30 fps, 30 tbr, 15360 tbn, 30 tbc (default)<br />
   Metadata:<br />
     handler_name    : VideoHandler<br />
   Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s        (default)<br />
   Metadata:<br />
     handler_name    : SoundHandler<br />
Output #0, mp3, to '3.mp3':<br />
 Metadata:<br />
   major_brand     : isom<br />
   minor_version   : 512<br />
   compatible_brands: isomiso2mp41<br />
   encoder         : Lavf55.47.100<br />
   Stream #0:0(und): Audio: mp3, 0 channels, 128 kb/s (default)<br />
   Metadata:<br />
     handler_name    : SoundHandler<br />
Stream mapping:<br />
 Stream #0:1 -> #0:0 (aac (native) -> ? (?))<br />
Encoder (codec mp3) not found for output stream #0:0

  any help would be appreciated.