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• ffmpeg producing empty MP4 files

  3 mai 2017, par Joshua Dowell

  I am trying to use ffmpeg to convert MTS files to MP4 files. It seems as though the command is running correctly, but the resulting files end up being empty.

  joshua@joshua-VirtualBox:~$ ffmpeg -i /media/sf_2017-04/SD_044/00007.MTS /media/sf_2017-04/SD_04/000007.mp4
  
  ffmpeg version 0.8.17-4:0.8.17-0ubuntu0.12.04.2, Copyright (c) 2000-2014 the Libav developers
  
    built on Apr  1 2016 14:28:02 with gcc 4.6.3
  
  The ffmpeg program is only provided for script compatibility and will be removed
  
  in a future release. It has been deprecated in the Libav project to allow for
  
  incompatible command line syntax improvements in its replacement called avconv
  
  (see Changelog for details). Please use avconv instead.
  
  Input #0, mpegts, from '/media/sf_2017-04/SD_044/00007.MTS':
  
    Duration: 00:01:17.07, start: 1.927822, bitrate: 25053 kb/s
  
    Program 1 
  
      Stream #0.0[0x1011]: Video: h264 (High), yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], 59.96 fps, 59.94 tbr, 90k tbn, 119.88 tbc
  
      Stream #0.1[0x1100]: Audio: ac3, 48000 Hz, stereo, s16, 256 kb/s
  
      Stream #0.2[0x1200]: Data: [144][0][0][0] / 0x0090
  
  File '/media/sf_2017-04/SD_04/000007.mp4' already exists. Overwrite ? [y/N] y
  
  [buffer @ 0x88772a0] w:1920 h:1080 pixfmt:yuv420p
  
  ffmpeg -i /media/sf_2017-04/SD_044/00007.MTS /media/sf_2017-04/SD_04/000007.mp4
  
  ffmpeg version 0.8.17-4:0.8.17-0ubuntu0.12.04.2, Copyright (c) 2000-2014 the Libav developers
  
    built on Apr  1 2016 14:28:02 with gcc 4.6.3
  
  The ffmpeg program is only provided for script compatibility and will be removed
  
  in a future release. It has been deprecated in the Libav project to allow for
  
  incompatible command line syntax improvements in its replacement called avconv
  
  (see Changelog for details). Please use avconv instead.
  
  Input #0, mpegts, from '/media/sf_2017-04/SD_044/00007.MTS':
  
    Duration: 00:01:17.07, start: 1.927822, bitrate: 25053 kb/s
  
    Program 1 
  
      Stream #0.0[0x1011]: Video: h264 (High), yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], 59.96 fps, 59.94 tbr, 90k tbn, 119.88 tbc
  
      Stream #0.1[0x1100]: Audio: ac3, 48000 Hz, stereo, s16, 256 kb/s
  
      Stream #0.2[0x1200]: Data: [144][0][0][0] / 0x0090
  
  File '/media/sf_2017-04/SD_04/000007.mp4' already exists. Overwrite ? [y/N] y
  
  [buffer @ 0x88772a0] w:1920 h:1080 pixfmt:yuv420p
  
  encoder 'aac' is experimental and might produce bad results.
  
  Add '-strict experimental' if you want to use it.

• ffmpeg -bsf:v h264_mp4 toannexb not working in debien

  5 avril 2017, par Ruydo

  i have to append video with a audio and merge the output with anther video mp4
  i use this code to append video with audio

  ffmpeg -i "out1.mp4" -i "desc1.mp3" -c:v copy -c:a aac -strict experimental "output2.mp4"

  its work in windows but in my server lunix i have this error

  root@ns:~# ffmpeg -i /var/www/hespress/17/out1.mp4 -i /var/www/hespress/17/desc1.mp3 -c:v copy -c:a aac -strict experimental /var/www/hespress/17/output2.mp4
  
  ffmpeg version 0.8.20-6:0.8.20-0+deb7u1, Copyright (c) 2000-2014 the Libav developers
  
    built on Jan 19 2017 11:13:36 with gcc 4.7.2
  
  The ffmpeg program is only provided for script compatibility and will be removed
  
  in a future release. It has been deprecated in the Libav project to allow for
  
  incompatible command line syntax improvements in its replacement called avconv
  
  (see Changelog for details). Please use avconv instead.
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/hespress/17/out1.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf53.21.1
  
    Duration: 00:00:20.03, start: 0.000000, bitrate: 1374 kb/s
  
      Stream #0.0(und): Video: h264 (Main), yuvj420p, 1280x720 [PAR 1:1 DAR 16:9], 1371 kb/s, 30 fps, 30 tbr, 30 tbn, 60 tbc
  
  [mp3 @ 0xa06c40] max_analyze_duration reached
  
  Input #1, mp3, from '/var/www/hespress/17/desc1.mp3':
  
    Metadata:
  
      encoder         : Lavf53.21.1
  
    Duration: 00:00:19.53, start: 0.000000, bitrate: 192 kb/s
  
      Stream #1.0: Audio: mp3, 44100 Hz, mono, s16, 192 kb/s
  
  Unrecognized option 'c:v'
  
  Failed to set value 'copy' for option 'c:v'

  when i went to merge two file i use this code

  ffmpeg -i intro.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts '.$dossier.'/intermediate1.ts

  in windows its work but in server debian i have this error

  root@ns205125:~# ffmpeg -i /var/www/hespress/intro.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts /var/www/hespress/17/intermediate1.ts
  
  ffmpeg version 0.8.20-6:0.8.20-0+deb7u1, Copyright (c) 2000-2014 the Libav developers
  
    built on Jan 19 2017 11:13:36 with gcc 4.7.2
  
  The ffmpeg program is only provided for script compatibility and will be removed
  
  in a future release. It has been deprecated in the Libav project to allow for
  
  incompatible command line syntax improvements in its replacement called avconv
  
  (see Changelog for details). Please use avconv instead.
  
  [aac @ 0x3938ba0] Input buffer exhausted before END element found
  
  
  
  Seems stream 0 codec frame rate differs from container frame rate: 180000.00 (180000/1) -> 30.00 (30/1)
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/hespress/intro.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: isommp42
  
      creation_time   : 2017-03-27 23:03:04
  
    Duration: 00:00:12.92, start: 0.000000, bitrate: 2598 kb/s
  
      Stream #0.0(eng): Video: h264 (Baseline), yuv420p, 1280x720, 2479 kb/s, 30 fps, 30 tbr, 90k tbn, 180k tbc
  
      Metadata:
  
        creation_time   : 2017-03-27 23:03:04
  
      Stream #0.1(eng): Audio: aac, 48000 Hz, mono, s16, 127 kb/s
  
      Metadata:
  
        creation_time   : 2017-03-27 23:03:04
  
  Unrecognized option 'c'
  
  Failed to set value 'copy' for option 'c'
  
  root@ns205125:~# 

• Posthoc connect FFMPEG to opencv-python binary for Google Cloud Dataflow job

  16 juillet 2017, par bw4sz

  I would like to run some video processing jobs on linux based compute engines on Google Cloud DataFlow. Cloud DataFlow requires you to build a setup.py file, or supply dependencies in a requirements.txt.

  https://cloud.google.com/dataflow/pipelines/dependencies-python

  My video process requires opencv in python with FFMPEG support. I would like to avoid building opencv from source, as this takes nearly 35 minutes for each worker to git clone/make/make install.

  There is a linux python binary .whl that works great. But its specifically compiled without FFMPEG.

  From https://pypi.python.org/pypi/opencv-python

  "IMPORTANT NOTE

  MacOS and Linux wheels have currently some limitations :

  video related functionality is not supported (not compiled with FFmpeg)"

  Is it possible to post-hoc connect FFMPEG to the binary ? That is download FFMPEG and its libraries separately and still read video ? I know this is contrived, but are are there any options here besides building opencv from source for every new worker ?