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• Merge commit ’22e76ec635bafdd1d1ec35581a7ac09e69e3c43e’

  10 juillet 2013, par Michael Niedermayer

  Merge commit ’22e76ec635bafdd1d1ec35581a7ac09e69e3c43e’
  * commit ’22e76ec635bafdd1d1ec35581a7ac09e69e3c43e’ :
  
    atrac3 : set the getbits context the right buffer_end
  
    atrac3 : fix error handling
  Conflicts :
  
  	libavcodec/atrac3.c
  No change as these issues have been fixed previously
  
  See : c8f25cafd2f23662bcb1e62965c0c42d6989688a
  
  See : 5eaed6d33689cc6f6e7c07463ede6b387b08afc4
  Merged-by : Michael Niedermayer <michaelni@gmx.at>
  

• Drupal 7 audioconverter module failed - libavcodec52 - which codec for Debian squeeze ?

  7 décembre 2012, par Meggy

  I am using the audioconverter module with the audiorecorderfield module in Drupal 7. Though it was working previously, I just recently noticed that the audioconverter module has stopped converting wav files to mp3. Here's the error in my logs ;

  MESSAGE: executing: /usr/bin/ffmpeg -i /var/aegir/platforms/drupal-7.16/sites/default/files/1354856044.wav /var/aegir/platforms/drupal-7.16/sites/default/files/1354856044.wav.mp3
  
  
  
  MESSAGE: Audio conversion failed. FFMPEG reported the following output: 
  
  
  
  FFmpeg version SVN-r0.5.9-4:0.5.9-1, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  
    configuration: --extra-version=4:0.5.9-1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libdirac --enable-libgsm --enable-libopenjpeg --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --disable-stripping --disable-vhook --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libfaad --enable-libdc1394 --enable-shared --disable-static
  
    libavutil     49.15. 0 / 49.15. 0
  
    libavcodec    52.20. 1 / 52.20. 1
  
    libavformat   52.31. 0 / 52.31. 0
  
    libavdevice   52. 1. 0 / 52. 1. 0
  
    libavfilter    0. 4. 0 /  0. 4. 0
  
    libswscale     0. 7. 1 /  0. 7. 1
  
    libpostproc   51. 2. 0 / 51. 2. 0
  
  built on Jun 10 2012 10:30:14, gcc: 4.4.5
  
  Input #0, wav, from '/var/aegir/platforms/drupal-7.16/sites/default/files/1354857172.wav':
  
  Duration: 00:00:27.50, bitrate: 178 kb/s
  
  Stream #0.0: Audio: adpcm_ima_wav, 44100 Hz, mono, s16, 178 kb/s
  
  Output #0, mp3, to '/var/aegir/platforms/drupal-7.16/sites/default/files/1354857172.wav.mp3':
  
  Stream #0.0: Audio: 0x0000, 44100 Hz, mono, s16, 64 kb/s
  
  Stream mapping:
  
  Stream #0.0 -> #0.0
  
  Unsupported codec for output stream #0.0
  
  
  
  SEVERITY: error
  
  
  
  MESSAGE: converted file is an empty file.

  It seems similar to the fixed issue posted by tinny here http://drupal.org/node/1818308 but I have libavcodec52 installed and I'm still getting these errors.

  I can see the wav file is created by the audiorecorder module but the audioconverter module is failing on the conversion.

  Does anyone know which codec I should use in Debian 6 Squeeze ?

• Join mp4 files in linux [migrated]

  18 décembre 2012, par Jose Armando

  I want to join two mp4 files to create a single one. The video streams are encoded in h264 and the audio in aac. I can not re-encode the videos to another format due to computational reasons. Also, I cannot use any gui programs, all processing must be performed with linux command line utilities. FFmpeg cannot do this for mpeg4 files so instead I used MP4Box

  e.g. MP4Box -add video1.mp4 -cat video2.mp4 newvideo.mp4

  unfortunately the audio gets all mixed up. I thought that the problem was that the audio was in aac so I transcoded it in mp3 and used again MP4Box. In this case the audio is fine for the first half of newvideo.mp4 (corresponding to video1.mp4) but then their is no audio and I cannot navigate in the video also. My next thought was that the audio and video streams had some small discrepancies in their lengths that I should fix. So for each input video I splitted the video and audio streams and then joined them with the -shortest option in ffmpeg.

  thus for the first video I ran

   avconv -y -i video1.mp4 -c copy -map 0:0 videostream1.mp4
  
  
  
   avconv -y -i video1.mp4 -c copy -map 0:1 audiostream1.m4a
  
  
  
   avconv -y -i videostream1.mp4 -i audiostream1.m4a  -c copy -shortest  video1_aligned.mp4

  similarly for the second video and then used MP4Box as previously. Unfortunately this didn't work either. The only success I had was when I joined the video streams separetely (i.e. videostream1.mp4 and videostream2.mp4) and the audio streams (i.e. audiostream1.m4a and audiostream2.m4a) and then joined the video and audio in a final file. However, the synchronization is lost for the second half of the video. Concretelly, there is a 1 sec delay of audio and video. Any suggestions are really welcome.