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• 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:~# 

• Makefile for c++ program cannot be compiled properly

  20 mars 2017, par Wei

  I am quite new to c++ Makefile. Recently, I am trying to re-implement the dense trajectory algorithm introduced by this paper : https://lear.inrialpes.fr/people/wang/dense_trajectories

  However, I was struggling with Makefile that they provided for quite a while. The Makefile is as follows :

  # set the binaries that have to be built
  
  TARGETS := DenseTrack Video
  
  
  
  # set the build configuration set 
  
  BUILD := release
  
  #BUILD := debug
  
  
  
  # set bin and build dirs
  
  BUILDDIR := .build_$(BUILD)
  
  BINDIR := $(BUILD)
  
  
  
  # libraries 
  
  LDLIBS = $(addprefix -l, $(LIBS) $(LIBS_$(notdir $*)))
  
  LIBS := \
  
      opencv_core opencv_highgui opencv_video opencv_imgproc \
  
      avformat avdevice avutil avcodec swscale
  
  
  
  # set some flags and compiler/linker specific commands
  
  CXXFLAGS = -pipe -D __STDC_CONSTANT_MACROS -D STD=std -Wall $(CXXFLAGS_$(BUILD)) -I. -I/usr/local/include -I/home/wei/ffmpeg_build/include
  
  CXXFLAGS_debug := -ggdb
  
  CXXFLAGS_release := -O3 -DNDEBUG -ggdb
  
  LDFLAGS = -L/usr/local/lib -L/home/wei/ffmpeg_build/lib -pipe -Wall $(LDFLAGS_$(BUILD))
  
  LDFLAGS_debug := -ggdb
  
  LDFLAGS_release := -O3 -ggdb
  
  
  
  include make/generic.mk

  I can verify that my opencv2.4.2 and ffmpeg5.4.0 are successfully installed in Ubuntu 16.04, by running an example using those two libraries.

  For opencv :
  The lib path is : /usr/local/lib

  libavcodec.a                   libopencv_gpu.so.2.4   
  
      libopencv_photo.so.2.4
  
  libavdevice.a                  libopencv_gpu.so.2.4.2        libopencv_photo.so.2.4.2
  
  libavfilter.a                  libopencv_highgui.so          libopencv_stitching.so
  
  libavformat.a                  libopencv_highgui.so.2.4      libopencv_stitching.so.2.4
  
  libavutil.a                    libopencv_highgui.so.2.4.2    libopencv_stitching.so.2.4.2
  
  libopencv_calib3d.so           libopencv_imgproc.so          libopencv_ts.so
  
  libopencv_calib3d.so.2.4       libopencv_imgproc.so.2.4      libopencv_ts.so.2.4
  
  libopencv_calib3d.so.2.4.2     libopencv_imgproc.so.2.4.2    libopencv_ts.so.2.4.2
  
  libopencv_contrib.so           libopencv_legacy.so           libopencv_video.so
  
  libopencv_contrib.so.2.4       libopencv_legacy.so.2.4       libopencv_video.so.2.4
  
  libopencv_contrib.so.2.4.2     libopencv_legacy.so.2.4.2     libopencv_video.so.2.4.2
  
  libopencv_core.so              libopencv_ml.so               libopencv_videostab.so
  
  libopencv_core.so.2.4          libopencv_ml.so.2.4           libopencv_videostab.so.2.4
  
  libopencv_core.so.2.4.2        libopencv_ml.so.2.4.2         libopencv_videostab.so.2.4.2
  
  libopencv_features2d.so        libopencv_nonfree.so          libpostproc.a
  
  libopencv_features2d.so.2.4    libopencv_nonfree.so.2.4      libswresample.a
  
  libopencv_features2d.so.2.4.2  libopencv_nonfree.so.2.4.2    libswscale.a
  
  libopencv_flann.so             libopencv_objdetect.so        pkgconfig
  
  libopencv_flann.so.2.4         libopencv_objdetect.so.2.4    python2.7
  
  libopencv_flann.so.2.4.2       libopencv_objdetect.so.2.4.2  python3.5
  
  libopencv_gpu.so               libopencv_photo.so

  The include path is : usr/local/include :

  libavcodec   libavfilter  libavutil    libswresample  opencv
  
  libavdevice  libavformat  libpostproc  libswscale     opencv2

  For ffmpeg :
  The lib path is : /home/user/ffmpeg_build/lib

  libavcodec.a   libavfilter.a  libavutil.a   libfdk-aac.la  libswresample.a  libx265.a
  
  libavdevice.a  libavformat.a  libfdk-aac.a  libpostproc.a  libswscale.a     pkgconfig

  The include path is : /home/user/ffmpeg/include

  fdk-aac     libavdevice  libavformat  libpostproc    libswscale     x265.h
  
  libavcodec  libavfilter  libavutil    libswresample  x265_config.h

  So when I make it with Makefile, I did not get error but it seems linking is working properly, nor is the compiled output.

  I tried to directly compile with g++ command.

  sudo g++ -o Video -pipe -D __STDC_CONSTANT_MACROS -D STD=std -Wall -I. -I/usr/local/include -O3 -DNDEBUG -ggdb -L/usr/local/lib -lopencv_core -lopencv_highgui -lopencv_video -lopencv_imgproc -lavformat -lavdevice -lavutil -lavcodec -lswscale *.h Video.cpp

  However,it returns errors as :

  /tmp/ccjYmwI4.o: In function `main':
  
  /home/wei/Documents/dt/dense_trajectory_release_v1.2/Video.cpp:33: undefined reference to `cvCreateFileCapture'
  
  /home/wei/Documents/dt/dense_trajectory_release_v1.2/Video.cpp:48: undefined reference to `cvQueryFrame'
  
  /home/wei/Documents/dt/dense_trajectory_release_v1.2/Video.cpp:57: undefined reference to `cvCopy'
  
  /home/wei/Documents/dt/dense_trajectory_release_v1.2/Video.cpp:60: undefined reference to `cvShowImage'
  
  /home/wei/Documents/dt/dense_trajectory_release_v1.2/Video.cpp:61: undefined reference to `cvWaitKey'
  
  /home/wei/Documents/dt/dense_trajectory_release_v1.2/Video.cpp:53: undefined reference to `cvCreateImage'
  
  /home/wei/Documents/dt/dense_trajectory_release_v1.2/Video.cpp:70: undefined reference to `cvDestroyWindow'
  
  /home/wei/Documents/dt/dense_trajectory_release_v1.2/Video.cpp:41: undefined reference to `cvNamedWindow'
  
  collect2: error: ld returned 1 exit status

  I have been working on this issue for several days. Any help or suggestions would be really appreciated.

  Thanks

• How to Play a Video file in javacv / javacpp

  28 mars 2017, par Floesmaan

  Does someone have some example code to play a simple video file with the current javaCPP/javaCV version and the FFmpegFrameGrabber ?

  I tried this solution, but its apparently too old and does not work with the current javacv version because of an incompatible FrameGrabber interface (returns a "Frame"-Object instead of an "IplImage"-Object). If I change the code manually (using Frame instead of IplImage), it returns the error message :

  java.lang.VerifyError: Bad type on operand stack
  
  Exception Details:
  
    Location:
  
      org/bytedeco/javacv/FFmpegFrameGrabber.startUnsafe()V @1291: invokespecial
  
    Reason:
  
      Type 'org/bytedeco/javacpp/avutil$AVFrame' (current frame, stack[2]) is not assignable to 'org/bytedeco/javacpp/Pointer'
  
    Current Frame:
  
      bci: @1291
  
      flags: { }
  
      locals: { 'org/bytedeco/javacv/FFmpegFrameGrabber', integer, 'org/bytedeco/javacpp/avformat$AVInputFormat', 'org/bytedeco/javacpp/avutil$AVDictionary', integer, 'org/bytedeco/javacpp/avcodec$AVCodec', integer, integer, integer, integer }
  
      stack: { uninitialized 1283, uninitialized 1283, 'org/bytedeco/javacpp/avutil$AVFrame' }
  
    Bytecode:
  
      0x0000000: 2a01 b500 332a bb00 8659 01b7 0087 b500............

  FYI : I’m comparing different java libraries for playing video files and extract their pixel data (xuggler, vlcj, ...) and search for the best one. I really like to include javacv in my tests but it’s not working :(