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• Using ffmpeg library

  29 juillet 2014, par DAVIDBALAS1

  Thx all for helping <3

  So, I have downloaded the ffmpeg library, imported it to eclipse, added it as a library to my android application and tried to use it, it doesn’t work.

  Step by step :

  • Downloaded this file : https://github.com/guardianproject/android-ffmpeg-java
  • Extracted it to an empty folder.
  • At Eclipse, "import" and then I have selected this empty folder.
  • Right click at my project, properties, android, added the ffmpeg library.

  • At my on create I used this code(just for checking) :

    ffmpeg -t 30 -i inputfile.mp3 -acodec copy outputfile.mp3

  But I get a lot of errors :

  Multiple markers at this line
  
  - Syntax error on token(s), misplaced 
  
   construct(s)
  
  - Syntax error on token "inputfile", delete this 
  
   token
  
  - Syntax error on token "30", delete this token
  
  - Syntax error on token ".", ; expected

  Can you see my problem ?

• Invalid pixel aspect ratio in ffmpeg

  26 septembre 2014, par dudeofea

  I want to scale a video to a certain size using ffmpeg, but I get the following error :

  ffmpeg -i Ad_939.avi -vf scale=1000:64 test_ad.avi       
  
  ffmpeg version 2.3.3 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Sep 26 2014 10:31:06 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  
    configuration: 
  
    libavutil      52. 92.100 / 52. 92.100
  
    libavcodec     55. 69.100 / 55. 69.100
  
    libavformat    55. 48.100 / 55. 48.100
  
    libavdevice    55. 13.102 / 55. 13.102
  
    libavfilter     4. 11.100 /  4. 11.100
  
    libswscale      2.  6.100 /  2.  6.100
  
    libswresample   0. 19.100 /  0. 19.100
  
  Input #0, avi, from 'Ad_939.avi':
  
    Metadata:
  
      encoder         : Lavf56.4.101
  
    Duration: 00:00:20.50, start: 0.000000, bitrate: 75 kb/s
  
      Stream #0:0: Video: wmv2 (WMV2 / 0x32564D57), yuv420p, 160x64, 68 kb/s, SAR 32:45 DAR 16:9, 24 fps, 24 tbr, 24 tbn, 24 tbc
  
  [mpeg4 @ 0x2305cc0] Invalid pixel aspect ratio 128/1125, limit is 255/255 reducing
  
  [mpeg4 @ 0x2305cc0] too many threads/slices (5), reducing to 4
  
  Output #0, avi, to 'test_ad.avi':
  
    Metadata:
  
      ISFT            : Lavf55.48.100
  
      Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 1000x64 [SAR 19:167 DAR 2375:1336], q=2-31, 200 kb/s, SAR 128:1125 DAR 16:9, 24 fps, 24 tbn, 24 tbc
  
      Metadata:
  
        encoder         : Lavc55.69.100 mpeg4
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (wmv2 (native) -> mpeg4 (native))
  
  Press [q] to stop, [?] for help
  
  frame=  228 fps=0.0 q=2.0 size=     222kB time=00:00:09.50 bitrate= 191.6kbits/s
  
  frame=  468 fps=467 q=2.0 size=     435kB time=00:00:19.50 bitrate= 182.8kbits/s
  
  frame=  492 fps=456 q=2.0 Lsize=     458kB time=00:00:20.50 bitrate= 183.1kbits/s    
  
  video:441kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 3.981523%

  I’ve read around and it seems this was a past bug but that was 3 years ago. I’ve tried running this command with version 2.4.1, 2.3.3, 2.4.git (compiled from source Sept 16, 2014), and N-40951-g1ea7a3e (Newest static build) and they all fail.

  EDIT : When I say fail I mean that the video is not playing at the proper resolution. The file’s properties say that it is 1000x64 but VLC plays (as well as my website using a <video></video> tag) it with the original aspect ratio with the new width which is not what I want. I want a crunched up video the same size no matter what.

  Is there something I’m missing ?

• Merge commit ’5a419b2dd1881889d436f55741fd3ff3f9f436c4’

  8 octobre 2014, par Michael Niedermayer

  Merge commit ’5a419b2dd1881889d436f55741fd3ff3f9f436c4’
  * commit ’5a419b2dd1881889d436f55741fd3ff3f9f436c4’ :
  
    pixdesc : return color properties names
  Conflicts :
  
  	libavutil/pixdesc.c
  
  	libavutil/pixdesc.h
  
  	libavutil/version.h
  Merged-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] doc/APIchanges
  • [DH] libavutil/pixdesc.c
  • [DH] libavutil/pixdesc.h
  • [DH] libavutil/version.h