Recherche avancée

Sur d’autres sites (10927)

• OpenCV VideoWriter using ffmpeg with "Could not open codec 'libx264'" Error

  28 septembre 2016, par user2262504

  I am new to OpenCV, and I want write Mat images into video using VideoWriter on Ubuntu 12.04. But when constructing VideoWriter, errors came out.

  It seems that OpenCV invoke ffmpeg API using default parameters and ffmpeg invoke x264 using its default parameters. Then these setting is broken for libx264. Thus the "Could not open codec ’libx264’" error.

  Anyone has ideas to solve this problem ?

  More specifically :

  1. anyone knows where and how OpenCV invoke ffmpeg API ?
  2. how to change ffmpeg default settings using code, hopefull, can be easily embeded into OpenCV ?
  3. will changes of default in ffmpeg be carried to libx264 ?

  Errors :

  1. Uising CV_FOURCC('H', '2', '6', '4')
  
  [libx264 @ 0x255de40] broken ffmpeg default settings detected
  
  [libx264 @ 0x255de40] use an encoding preset (e.g. -vpre medium)
  
  [libx264 @ 0x255de40] preset usage: -vpre <speed> -vpre <profile>
  
  [libx264 @ 0x255de40] speed presets are listed in x264 --help
  
  [libx264 @ 0x255de40] profile is optional; x264 defaults to high
  
  Could not open codec 'libx264': Unspecified error
  
  
  
  2. Using FOURCC = -1 to invoke user customized codec
  
  OpenCV Error: Unsupported format or combination of formats (Gstreamer Opencv 
  
  backend doesn't support this codec acutally.) in CvVideoWriter_GStreamer::open, 
  
  file /home/XXX/Downloads/opencv-2.4.8/modules/highgui/src/cap_gstreamer.cpp, 
  
  line 505 terminate called after throwing an instance of 'cv::Exception'
  
  what():  /home/XXX/Downloads/opencv-2.4.8/modules/highgui/src/cap_gstreamer.cpp:
  
  505: error: (-210) Gstreamer Opencv backend doesn't support this codec acutally.
  
  in function CvVideoWriter_GStreamer::open
  
  </profile></speed>

  Codes :

  int main(int argc, char *argv[])
  
  {
  
      VideoWriter outputVideo;
  
      bool fourcc_on = true; //switch on / off different error
  
      if (fourcc_on)
  
          outputVideo.open("outVideo.avi", CV_FOURCC('H', '2', '6', '4'), 25, Size(100, 100), true);
  
      else
  
          outputVideo.open("outVideo.avi", -1, 25, Size(100, 100), true);
  
  
  
      if (!outputVideo.isOpened())
  
      {
  
          cout  << "Could not open the output video for write" << endl;
  
          return -1;
  
      }
  
      return 0;
  
  }

  OpenCV Configuration :

  -- Detected version of GNU GCC: 46 (406)
  
  -- Found OpenEXR: /usr/lib/libIlmImf.so
  
  -- Looking for linux/videodev.h
  
  -- Looking for linux/videodev.h - not found
  
  -- Looking for linux/videodev2.h
  
  -- Looking for linux/videodev2.h - found
  
  -- Looking for sys/videoio.h
  
  -- Looking for sys/videoio.h - not found
  
  -- Looking for libavformat/avformat.h
  
  -- Looking for libavformat/avformat.h - found
  
  -- Looking for ffmpeg/avformat.h
  
  -- Looking for ffmpeg/avformat.h - not found
  
  -- Could NOT find JNI (missing:  JAVA_INCLUDE_PATH JAVA_INCLUDE_PATH2 JAVA_AWT_INCLUDE_PATH) 
  
  -- 
  
  -- General configuration for OpenCV 2.4.8 =====================================
  
  --   Version control:               unknown
  
  -- 
  
  --   Platform:
  
  --     Host:                        Linux 3.8.0-38-generic x86_64
  
  --     CMake:                       2.8.7
  
  --     CMake generator:             Unix Makefiles
  
  --     CMake build tool:            /usr/bin/make
  
  --     Configuration:               RELEASE
  
  -- 
  
  --   C/C++:
  
  --     Built as dynamic libs?:      YES
  
  --     C++ Compiler:                /usr/bin/c++  (ver 4.6)
  
  --     C++ flags (Release):         -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -O3 -DNDEBUG  -DNDEBUG
  
  --     C++ flags (Debug):           -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -g  -O0 -DDEBUG -D_DEBUG
  
  --     C Compiler:                  /usr/bin/gcc
  
  --     C flags (Release):           -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -O3 -DNDEBUG  -DNDEBUG
  
  --     C flags (Debug):             -fsigned-char -W -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -msse -msse2 -msse3 -ffunction-sections -g  -O0 -DDEBUG -D_DEBUG
  
  --     Linker flags (Release):      
  
  --     Linker flags (Debug):        
  
  --     Precompiled headers:         YES
  
  -- 
  
  --   OpenCV modules:
  
  --     To be built:                 core flann imgproc highgui features2d calib3d ml video legacy objdetect photo gpu ocl nonfree contrib python stitching superres ts videostab
  
  --     Disabled:                    world
  
  --     Disabled by dependency:      -
  
  --     Unavailable:                 androidcamera dynamicuda java
  
  -- 
  
  --   GUI: 
  
  --     QT:                          NO
  
  --     GTK+ 2.x:                    YES (ver 2.24.10)
  
  --     GThread :                    YES (ver 2.32.4)
  
  --     GtkGlExt:                    NO
  
  --     OpenGL support:              NO
  
  -- 
  
  --   Media I/O: 
  
  --     ZLib:                        /usr/lib/x86_64-linux-gnu/libz.so (ver 1.2.3.4)
  
  --     JPEG:                        /usr/lib/x86_64-linux-gnu/libjpeg.so (ver )
  
  --     PNG:                         /usr/lib/x86_64-linux-gnu/libpng.so (ver 1.2.46)
  
  --     TIFF:                        /usr/lib/x86_64-linux-gnu/libtiff.so (ver 42 - 3.9.5)
  
  --     JPEG 2000:                   /usr/lib/x86_64-linux-gnu/libjasper.so (ver 1.900.1)
  
  --     OpenEXR:                     /usr/lib/libImath.so /usr/lib/libIlmImf.so /usr/lib/libIex.so /usr/lib/libHalf.so /usr/lib/libIlmThread.so (ver 1.6.1)
  
  -- 
  
  --   Video I/O:
  
  --     DC1394 1.x:                  NO
  
  --     DC1394 2.x:                  YES (ver 2.2.0)
  
  --     FFMPEG:                      YES
  
  --       codec:                     YES (ver 55.58.105)
  
  --       format:                    YES (ver 55.37.101)
  
  --       util:                      YES (ver 52.78.100)
  
  --       swscale:                   YES (ver 2.6.100)
  
  --       gentoo-style:              YES
  
  --     GStreamer:                   
  
  --       base:                      YES (ver 0.10.36)
  
  --       app:                       YES (ver 0.10.36)
  
  --       video:                     YES (ver 0.10.36)
  
  --     OpenNI:                      NO
  
  --     OpenNI PrimeSensor Modules:  NO
  
  --     PvAPI:                       NO
  
  --     GigEVisionSDK:               NO
  
  --     UniCap:                      NO
  
  --     UniCap ucil:                 NO
  
  --     V4L/V4L2:                    Using libv4l (ver 1.0.1)
  
  --     XIMEA:                       NO
  
  --     Xine:                        NO
  
  -- 
  
  --   Other third-party libraries:
  
  --     Use IPP:                     NO
  
  --     Use Eigen:                   NO
  
  --     Use TBB:                     NO
  
  --     Use OpenMP:                  NO
  
  --     Use GCD                      NO
  
  --     Use Concurrency              NO
  
  --     Use C=:                      NO
  
  --     Use Cuda:                    NO
  
  --     Use OpenCL:                  YES
  
  -- 
  
  --   OpenCL:
  
  --     Version:                     dynamic
  
  --     Include path:                /home/shixudongleo/Downloads/opencv-2.4.8/3rdparty/include/opencl/1.2
  
  --     Use AMD FFT:                 NO
  
  --     Use AMD BLAS:                NO
  
  -- 
  
  --   Python:
  
  --     Interpreter:                 /usr/bin/python (ver 2.7.3)
  
  --     Libraries:                   /usr/lib/libpython2.7.so
  
  --     numpy:                       /usr/lib/python2.7/dist-packages/numpy/core/include (ver 1.6.1)
  
  --     packages path:               lib/python2.7/dist-packages
  
  -- 
  
  --   Java:
  
  --     ant:                         NO
  
  --     JNI:                         NO
  
  --     Java tests:                  NO
  
  -- 
  
  --   Documentation:
  
  --     Build Documentation:         NO
  
  --     Sphinx:                      NO
  
  --     PdfLaTeX compiler:           /usr/bin/pdflatex
  
  -- 
  
  --   Tests and samples:
  
  --     Tests:                       YES
  
  --     Performance tests:           YES
  
  --     C/C++ Examples:              NO
  
  -- 
  
  --   Install path:                  /usr/local
  
  -- 
  
  --   cvconfig.h is in:              /home/shixudongleo/Downloads/opencv-2.4.8/build
  
  -- -----------------------------------------------------------------
  
  -- 
  
  -- Configuring done
  
  -- Generating done
  
  -- Build files have been written to: /home/XXX/Downloads/opencv-2.4.8/build

  FFMPEG

  ffmpeg is enable to support OpenCV and libx264 is enabled when compiling ffmpeg.
  By using ffmpeg command line, libx264 is running normally.

  $ ffmpeg -i test.avi -vcodec libx264 test.mp4
  
  ffmpeg -i test.avi -vcodec libx264 test.mp4 > ~/Downloads/ffmpeg_log.txt
  
  ffmpeg version 2.2.git Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Apr 24 2014 16:39:51 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  
    configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-nonfree --enable-postproc --enable-version3 --enable-x11grab --enable-shared --enable-pic
  
    libavutil      52. 78.100 / 52. 78.100
  
    libavcodec     55. 58.105 / 55. 58.105
  
    libavformat    55. 37.101 / 55. 37.101
  
    libavdevice    55. 13.100 / 55. 13.100
  
    libavfilter     4.  4.100 /  4.  4.100
  
    libswscale      2.  6.100 /  2.  6.100
  
    libswresample   0. 18.100 /  0. 18.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, avi, from 'test.avi':
  
    Duration: 00:00:03.73, start: 0.000000, bitrate: 1757 kb/s
  
      Stream #0:0: Video: msvideo1 (CRAM / 0x4D415243), rgb555le, 320x240, 1781 kb/s, 15 tbr, 15 tbn, 15 tbc
  
      Metadata:
  
        title           : julius.avi Video #1
  
  File 'test.mp4' already exists. Overwrite ? [y/N] y
  
  No pixel format specified, yuv444p for H.264 encoding chosen.
  
  Use -pix_fmt yuv420p for compatibility with outdated media players.
  
  [libx264 @ 0x25d08e0] using cpu capabilities: none!
  
  [libx264 @ 0x25d08e0] profile High 4:4:4 Predictive, level 1.2, 4:4:4 8-bit
  
  [libx264 @ 0x25d08e0] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=12 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=15 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to 'test.mp4':
  
    Metadata:
  
      encoder         : Lavf55.37.101
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv444p, 320x240, q=-1--1, 15360 tbn, 15 tbc
  
      Metadata:
  
        title           : julius.avi Video #1
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (msvideo1 -> libx264)
  
  Press [q] to stop, [?] for help
  
  frame=   56 fps=0.0 q=-1.0 Lsize=     321kB time=00:00:03.60 bitrate= 731.0kbits/s    
  
  video:320kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.409949%
  
  [libx264 @ 0x25d08e0] frame I:3     Avg QP:15.36  size:  7975
  
  [libx264 @ 0x25d08e0] frame P:38    Avg QP:26.05  size:  6230
  
  [libx264 @ 0x25d08e0] frame B:15    Avg QP:28.25  size:  4418
  
  [libx264 @ 0x25d08e0] consecutive B-frames: 46.4% 53.6%  0.0%  0.0%
  
  [libx264 @ 0x25d08e0] mb I  I16..4:  1.4% 72.8% 25.8%
  
  [libx264 @ 0x25d08e0] mb P  I16..4:  1.6%  5.7% 15.1%  P16..4:  7.6%  6.3%  7.4%  0.0%  0.0%    skip:56.3%
  
  [libx264 @ 0x25d08e0] mb B  I16..4:  0.2%  1.0%  2.0%  B16..8: 13.3%  7.8%  8.7%  direct: 8.3%  skip:58.8%  L0:34.9% L1:36.6% BI:28.5%
  
  [libx264 @ 0x25d08e0] 8x8 transform intra:37.7% inter:2.3%
  
  [libx264 @ 0x25d08e0] coded y,u,v intra: 52.1% 42.1% 30.1% inter: 19.6% 9.2% 5.2%
  
  [libx264 @ 0x25d08e0] i16 v,h,dc,p: 56% 17% 24%  2%
  
  [libx264 @ 0x25d08e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 16% 68%  1%  1%  1%  1%  1%  1%
  
  [libx264 @ 0x25d08e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 18% 28%  5%  6%  5%  7%  5%  6%
  
  [libx264 @ 0x25d08e0] Weighted P-Frames: Y:31.6% UV:21.1%
  
  [libx264 @ 0x25d08e0] ref P L0: 70.5%  9.0% 12.1%  6.5%  2.0%
  
  [libx264 @ 0x25d08e0] ref B L0: 91.3%  8.7%
  
  [libx264 @ 0x25d08e0] kb/s:700.56

• getting errors from FFMpeg when spawned from .NET

  18 mars 2014, par Brannon

  When I run FFMpeg from the command line like this

  ffmpeg.exe -hwaccel auto -re -i "C:\Users\Public\Videos\Sample Videos\Wildlife.wmv" -an -sn -c:v bmp -pix_fmt bgr24 -f rawvideo - > junk.bin

  it works fine. However, when I spawn the exact same thing (minus > junk.bin) I get this nasty "bad header" error after a few seconds of playback. What is causing this ? I have trouble believing my process blocks the pipe longer than the filesystem does, but it should be able to block the pipe indefinitely without defeating the decoding. The truncated stderr is below. My code to spawn the thing is here.

  ffmpeg version N-60761-g916a792 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Feb 19 2014 21:57:22 with gcc 4.8.2 (GCC)
  
    configuration: --target-os=mingw32 --enable-shared --enable-runtime-cpudetect
  
    libavutil      52. 65.100 / 52. 65.100
  
    libavcodec     55. 52.102 / 55. 52.102
  
    libavformat    55. 33.100 / 55. 33.100
  
    libavdevice    55. 10.100 / 55. 10.100
  
    libavfilter     4.  1.103 /  4.  1.103
  
    libswscale      2.  5.101 /  2.  5.101
  
    libswresample   0. 17.104 /  0. 17.104
  
  cygwin warning:
  
    MS-DOS style path detected: C:\Users\Public\Videos\Sample Videos\Wildlife.wmv
  
    Preferred POSIX equivalent is: /cygdrive/c/Users/Public/Videos/Sample Videos/Wildlife.wmv
  
    CYGWIN environment variable option "nodosfilewarning" turns off this warning.
  
    Consult the user's guide for more details about POSIX paths:
  
      http://cygwin.com/cygwin-ug-net/using.html#using-pathnames
  
  [asf @ 0x600059480] Stream #0: not enough frames to estimate rate; consider increasing probesize
  
  Guessed Channel Layout for  Input Stream #0.0 : stereo
  
  Input #0, asf, from 'C:\Users\Public\Videos\Sample Videos\Wildlife.wmv':
  
    Metadata:
  
      SfOriginalFPS   : 299700
  
      WMFSDKVersion   : 11.0.6001.7000
  
      WMFSDKNeeded    : 0.0.0.0000
  
      comment         : Footage: Small World Productions, Inc; Tourism New Zealand | Producer: Gary F. Spradling | Music: Steve Ball
  
      title           : Wildlife in HD
  
      copyright       : © 2008 Microsoft Corporation
  
      IsVBR           : 0
  
      DeviceConformanceTemplate: AP@L3
  
    Duration: 00:00:30.09, start: 0.000000, bitrate: 6977 kb/s
  
      Stream #0:0(eng): Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, stereo, fltp, 192 kb/s
  
      Stream #0:1(eng): Video: vc1 (Advanced) (WVC1 / 0x31435657), yuv420p, 1280x720, 5942 kb/s, 29.97 tbr, 1k tbn, 1k tbc
  
  Output #0, rawvideo, to 'pipe:':
  
    Metadata:
  
      SfOriginalFPS   : 299700
  
      WMFSDKVersion   : 11.0.6001.7000
  
      WMFSDKNeeded    : 0.0.0.0000
  
      comment         : Footage: Small World Productions, Inc; Tourism New Zealand | Producer: Gary F. Spradling | Music: Steve Ball
  
      title           : Wildlife in HD
  
      copyright       : © 2008 Microsoft Corporation
  
      IsVBR           : 0
  
      DeviceConformanceTemplate: AP@L3
  
      encoder         : Lavf55.33.100
  
      Stream #0:0(eng): Video: bmp, bgr24, 1280x720, q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
  
  Stream mapping:
  
    Stream #0:1 -> #0:0 (vc1 -> bmp)
  
  Press [q] to stop, [?] for help
  
  frame=    3 fps=0.0 q=0.0 size=    8100kB time=00:00:00.10 bitrate=662902.1kbits/s    
  
  frame=   29 fps= 26 q=0.0 size=   78302kB time=00:00:00.96 bitrate=662902.3kbits/s    
  
  frame=   50 fps= 30 q=0.0 size=  135003kB time=00:00:01.66 bitrate=662902.2kbits/s    
  
  frame=   65 fps= 30 q=0.0 size=  175503kB time=00:00:02.16 bitrate=662902.2kbits/s    
  
  frame=   80 fps= 30 q=0.0 size=  216004kB time=00:00:02.66 bitrate=662902.1kbits/s    
  
  frame=   95 fps= 30 q=0.0 size=  256505kB time=00:00:03.16 bitrate=662902.1kbits/s    
  
  [asf @ 0x600059480] ff asf bad header 74  at:5053733
  
  [asf @ 0x600059480] invalid packet_length -1908511255 at:5053740
  
  [asf @ 0x600059480] ff asf bad header d4  at:5053759
  
  [asf @ 0x600059480] ff asf skip 55629 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5181733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5189733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5197733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5205733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5213733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5221733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5229733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5237733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5245733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5357733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5365733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5373733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5381733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5493733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5501733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5509733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5517733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5629733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5637733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5645733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5653733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5701733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5709733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5717733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5725733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5805733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5813733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5821733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5829733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5877733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5885733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5893733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5901733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5949733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5957733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5965733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] ff asf bad header 0  at:5973733
  
  [asf @ 0x600059480] ff asf skip 7991 (unknown stream)
  
  [asf @ 0x600059480] packet_obj_size invalid
  
      Last message repeated 15 times
  
  [asf @ 0x600059480] unexpected packet_replic_size of 2
  
  [asf @ 0x600059480] packet_obj_size invalid
  
      Last message repeated 7 times
  
  [asf @ 0x600059480] ff asf skip 2562 (unknown stream)
  
  [asf @ 0x600059480] packet_obj_size invalid
  
      Last message repeated 3 times
  
  [asf @ 0x600059480] ff asf skip 448 (unknown stream)
  
  [asf @ 0x600059480] packet_obj_size invalid
  
      Last message repeated 9 times
  
  [asf @ 0x600059480] unexpected packet_replic_size of 6
  
  [asf @ 0x600059480] packet_obj_size invalid
  
      Last message repeated 7 times
  
  [asf @ 0x600059480] packet_frag_size is invalid (1749-9)
  
  [asf @ 0x600059480] packet_obj_size invalid
  
      Last message repeated 13 times
  
  [asf @ 0x600059480] packet_frag_size is invalid (1749-9)
  
  [asf @ 0x600059480] packet_obj_size invalid
  
      Last message repeated 24 times
  
  [asf @ 0x600059480] unexpected packet_replic_size of 6
  
  [asf @ 0x600059480] packet_obj_size invalid
  
      Last message repeated 6 times
  
  [asf @ 0x600059480] unexpected packet_replic_size of 5
  
  [asf @ 0x600059480] packet_obj_size invalid
  
      Last message repeated 6 times
  
  [asf @ 0x600059480] packet_frag_size is invalid (1749-9)
  
  [asf @ 0x600059480] packet_obj_size invalid
  
  [asf @ 0x600059480] packet_frag_size is invalid (1749-9)
  
  [asf @ 0x600059480] packet_obj_size invalid
  
      Last message repeated 2 times
  
  [asf @ 0x600059480] unexpected packet_replic_size of 5
  
  [asf @ 0x600059480] packet_obj_size invalid
  
      Last message repeated 8 times
  
  [asf @ 0x600059480] unexpected packet_replic_size of 5
  
  [asf @ 0x600059480] packet_obj_size invalid
  
      Last message repeated 39 times
  
  [asf @ 0x600059480] packet_frag_size is invalid (1749-40)

• ffmpeg : How to set AVFormatContext from NSData

  21 janvier 2014, par SUKIYAKI

  I'm using FFmpeg library in Objective-C.

  I want to set AVFormatContext from NSData which contain imagedata.
  I know I can set AVFormatContext with av_open_input_file().
  so writing contents of NSData to a temporary file, I can do it like this.

  [data writeToFile:@"./temp.mov" atomically:YES];
  
  av_open_input_file(&pFormatCtx, "./temp.mov", NULL, 0, NULL);
  
  
  
  .
  
  .
  
  .
  
  
  
  NSFileManager *fm = [NSFileManager defaultManager];
  
  [fm removeFileAtPath:@"./temp.mov" handler:nil];

  but, I don't want to use temporary file.

  Does anyone know smart way ?

  sorry my poor English.

  Thanks