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• Decoding an elementary HEVC stream using ffmpeg

  22 novembre 2013, par Zax

  I have successfully compiled and installed FFMPEG_2.1 from source code. I know that ffmpeg from version 2.1 onwards supports HEVC decoder. I have generated a .bin file using HM 10.0 and HM 11.0 HEVC reference code.

  However, when i give this bin file as an input to the ffmpeg i get an Input/output Error.

  The command that i have used is given below :

  ffmpeg -i Johnny_1280x720_60qp22.bin out.yuv

  The output of the above command is as shown below :

  ffmpeg version 2.1 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Nov 21 2013 15:52:14 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  
    configuration: 
  
    libavutil      52. 48.100 / 52. 48.100
  
    libavcodec     55. 39.100 / 55. 39.100
  
    libavformat    55. 19.104 / 55. 19.104
  
    libavdevice    55.  5.100 / 55.  5.100
  
    libavfilter     3. 90.100 /  3. 90.100
  
    libswscale      2.  5.101 /  2.  5.101
  
    libswresample   0. 17.104 /  0. 17.104
  
  Input #0, bin, from 'Johnny_1280x720_60qp22.bin':
  
    Duration: N/A, bitrate: N/A
  
      Stream #0:0: Video: bintext, pal8, 1280x118288, 25 tbr, 25 tbn, 25 tbc
  
  Output #0, rawvideo, to 'out.yuv':
  
    Metadata:
  
      encoder         : Lavf55.19.104
  
      Stream #0:0: Video: rawvideo, pal8, 1280x118288, q=2-31, 200 kb/s, 90k tbn, 25 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (bintext -> rawvideo)
  
  Press [q] to stop, [?] for help
  
  Johnny_1280x720_60qp22.bin: Input/output error
  
  frame=    1 fps=0.3 q=0.0 size=  147861kB time=00:00:00.04 bitrate=30281932.8kbiframe=    1 fps=0.3 q=0.0 Lsize=  147861kB time=00:00:00.04 bitrate=30281932.8kbits/s    
  
  video:147861kB audio:0kB subtitle:0 global headers:0kB muxing overhead 0.000000

  Can anyone please tell me why i'm facing this problem and how i can rectify it.

• ffmpeg minimal requirements configuration for encoding and decoding h264 files

  14 novembre 2013, par TheSquad

  I'm trying to compile ffmpeg with minimal requirements in order to encode/decode with h264.

  So far my command line configuration is :

  ./configure --disable-yasm --disable-everything --enable-encoder=libx264 --enable-encoder=libfaac --enable-decoder=h264 --enable-muxer=h264 --enable-demuxer=h264 --enable-parser=h264 --enable-protocol=file

  once compiled, I try this :

  ./ffmpeg -i ~/Dropbox/TestFile.mov -vcodec libx264 test.mp4

  but I get an error :

    ffmpeg version N-58081-g2925571 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Nov 14 2013 15:49:58 with Apple LLVM version 5.0 (clang-500.2.76) (based on LLVM 3.3svn)
  
    configuration: --disable-yasm --disable-everything --enable-encoder=libx264 --enable-encoder=libfaac --enable-decoder=h264 --enable-muxer=h264 --enable-demuxer=h264 --enable-parser=h264 --enable-protocol=file
  
    libavutil      52. 52.100 / 52. 52.100
  
    libavcodec     55. 43.100 / 55. 43.100
  
    libavformat    55. 21.100 / 55. 21.100
  
    libavdevice    55.  5.100 / 55.  5.100
  
    libavfilter     3. 91.100 /  3. 91.100
  
    libswscale      2.  5.101 /  2.  5.101
  
    libswresample   0. 17.104 /  0. 17.104
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/mGs/Dropbox/TestFile.mov':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 0
  
      compatible_brands: qt  
  
      creation_time   : 2013-06-23 14:33:09
  
      model           : iPhone 4S
  
      model-fra       : iPhone 4S
  
      encoder         : 6.0
  
      encoder-fra     : 6.0
  
      date            : 2013-06-23T16:33:09+0200
  
      date-fra        : 2013-06-23T16:33:09+0200
  
      make            : Apple
  
      make-fra        : Apple
  
    Duration: 00:00:42.09, start: 0.000000, bitrate: 20960 kb/s
  
      Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 20880 kb/s, 29.97 fps, 29.97 tbr, 600 tbn, 1200 tbc (default)
  
      Metadata:
  
        rotate          : 180
  
        creation_time   : 2013-06-23 14:33:09
  
        handler_name    : Core Media Data Handler
  
      Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, 63 kb/s (default)
  
      Metadata:
  
        creation_time   : 2013-06-23 14:33:09
  
        handler_name    : Core Media Data Handler
  
  [NULL @ 0x7fd999802e00] Unable to find a suitable output format for 'test.mp4'
  
  test.mp4: Invalid argument

  This is probably coming from the fact that I have forgot something to enable on the ffmpeg configuration... But I can't found out what.

  The test file is a video got from iPhone 4S Camera.

• configure : Check whether MSVC requires using the C89-to-C99 converter

  4 novembre 2013, par Martin Storsjö

  configure : Check whether MSVC requires using the C89-to-C99 converter
  MSVC does support enough of C99 to work without the converter since
  
  the 2013 version. Try to detect which version of the compiler in
  
  the path needs to run the C99 converter or not. When the converter
  
  is omitted, compilation time is reduced quite drastically.
  Prior to this, users could still use —cc="c99conv -noconv cl"
  
  when running MSVC 2013 to achieve the same.
  This checks the version number instead of doing a normal compile
  
  test, since this check needs to be done earlier in configure, before
  
  the normal compile test helpers are usable.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DH] configure