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• Image overlay on video using ffmpeg android

  14 mars 2018, par user2458434

  I am trying to add image overlay on video using ffmpeg library but didn’t succeed.

  I tried sample using ffmpeg , https://drive.google.com/file/d/0B2aT0QoEmtuaN0VJZ2Z4ODY3T2s/view

  and referred this link as well to overlay image on video, http://ksloan.net/watermarking-videos-from-the-command-line-using-ffmpeg-filters/#comment-9793 but getting error.

  Below is my logcat error for reference :

  07-31 10:23:43.406 29517-29517/com.examples.ffmpeg4android_demo D/ffmpeg4android : /storage/emulated/0/videokit/in.mp4 length in bytes : 840896
  07-31 10:23:43.432 29517-30185/com.examples.ffmpeg4android_demo I/ffmpeg4android : doInBackground started...
  07-31 10:23:43.432 29517-30185/com.examples.ffmpeg4android_demo I/ffmpeg4android : vk deleted : false
  07-31 10:23:43.434 29517-30185/com.examples.ffmpeg4android_demo D/ffmpeg4android : Acquire wake lock
  07-31 10:23:43.479 29517-30185/com.examples.ffmpeg4android_demo I/ffmpeg4android : =======running first command=========
  07-31 10:23:43.479 29517-30185/com.examples.ffmpeg4android_demo I/ffmpeg4android : running ffmpeg4android_lib : 322.00.02_LM322
  07-31 10:23:43.479 29517-30185/com.examples.ffmpeg4android_demo D/ffmpeg4android : "ffmpeg","-y","-loop","1","-i","/sdcard/videokit/logo.png","-i","/sdcard/videokit/in.mp4","-y","-filter_complex","overlay=0:0:shortest=1","/sdcard/videokit/out.m4v"
  07-31 10:23:43.485 29517-30185/com.examples.ffmpeg4android_demo D/ffmpeg4android : /sdcard/videokit/logo.png length in bytes : 6047
  07-31 10:23:43.486 29517-30185/com.examples.ffmpeg4android_demo D/ffmpeg4android : /sdcard/videokit/in.mp4 length in bytes : 840896
  07-31 10:23:43.486 29517-30185/com.examples.ffmpeg4android_demo I/ffmpeg4android : videokitLibPath exits
  07-31 10:23:43.486 29517-30185/com.examples.ffmpeg4android_demo I/ffmpeg4android : /data/user/0/com.examples.ffmpeg4android_demo/lib/libvideokit.so
  07-31 10:23:43.493 29517-30185/com.examples.ffmpeg4android_demo I/Videokit : libvideokit.so loaded
  07-31 10:23:43.493 29517-30185/com.examples.ffmpeg4android_demo I/Videokit : args is not NULL
  07-31 10:23:43.494 29517-30185/com.examples.ffmpeg4android_demo I/Videokit : more then one arg
  07-31 10:23:43.494 29517-30185/com.examples.ffmpeg4android_demo I/Videokit : function symbol found
  07-31 10:23:43.494 29517-30185/com.examples.ffmpeg4android_demo D/Videokit : Calling videokit run via loader
  07-31 10:23:43.494 29517-30185/com.examples.ffmpeg4android_demo D/Videokit : call licenseCheckComplex
  07-31 10:23:43.494 29517-30185/com.examples.ffmpeg4android_demo I/Videokit : isLicExistsComplex...
  07-31 10:23:43.494 29517-30185/com.examples.ffmpeg4android_demo I/Videokit : You used 1 of your 15 trial days.
  07-31 10:23:43.494 29517-30185/com.examples.ffmpeg4android_demo D/Videokit : license check rc : 0
  07-31 10:23:43.494 29517-30185/com.examples.ffmpeg4android_demo D/Videokit : ffmpeg4android base 2.5

                                                                          --------- beginning of crash

  07-31 10:23:43.584 29517-30185/com.examples.ffmpeg4android_demo A/libc : Fatal signal 11 (SIGSEGV), code 1, fault addr 0x0 in tid 30185 (AsyncTask #1)
  07-31 10:23:44.432 29517-29517/com.examples.ffmpeg4android_demo I/Choreographer : Skipped 44 frames ! The application may be doing too much work on its main thread.

• Video compressing not working with ffmpeg4android_lib library

  18 décembre 2019, par Nand Kishor Patidar

  When I am trying video compressing with ffmpeg4android_lib library then it is working on debug mode(Not google play store app) after that when I check live on play store the video compressing is not working and found that the application crashed. After the crash, it gives the error :-
  videokitLibPath not exits : /data/app/com.practice.presto-SSicBo_Qm4UXOQAQ45Vttg==/lib/arm/libvideokit.so
  My App Log is below :

  1576657500.663 20809-20809/com.practice.presto D/MyPracticeAudioVideo: outside wifi file type 2
  
  1576657500.807 20809-22043/com.practice.presto D/MyPracticeAudioVideo: Worker started
  
  1576657500.807 20809-22043/com.practice.presto D/MyPracticeAudioVideo: new file video path /storage/emulated/0/DCIM/Camera/VID_20191218_135413.mp4
  
  1576657500.808 20809-22043/com.practice.presto D/MyPracticeAudioVideo: Acquire wake lock
  
  1576657500.812 20809-22043/com.practice.presto I/ffmpeg4android: checkForPermissions() called
  
  1576657500.814 20809-22043/com.practice.presto I/ffmpeg4android: permission already granted
  
  1576657500.830 20809-22043/com.practice.presto D/MyPracticeAudioVideo: ffmpeg -y -i /storage/emulated/0/DCIM/Camera/VID_20191218_135413.mp4 -strict experimental -s 320x240 -r 25 -aspect 4:3 -vcodec mpeg4 -b 150k -ab 48000 -ac 2 -ar 22050 /storage/emulated/0/pp/1576657432247.mp4
  
  1576657500.831 20809-22043/com.practice.presto I/ffmpeg4android: running ffmpeg4android_lib: 41.07.00_LM41_00
  
  1576657500.831 20809-22043/com.practice.presto D/ffmpeg4android: {"ffmpeg","-y","-i","/storage/emulated/0/DCIM/Camera/VID_20191218_135413.mp4","-strict","experimental","-s","320x240","-r","25","-aspect","4:3","-vcodec","mpeg4","-b","150k","-ab","48000","-ac","2","-ar","22050","/storage/emulated/0/pp/1576657432247.mp4"}
  
  1576657500.833 20809-22043/com.practice.presto D/ffmpeg4android: /storage/emulated/0/DCIM/Camera/VID_20191218_135413.mp4 length in bytes: 15793157
  
  1576657500.834 20809-22043/com.practice.presto E/ffmpeg4android: **videokitLibPath not exits: /data/app/com.practice.presto-SSicBo_Qm4UXOQAQ45Vttg==/lib/arm/libvideokit.so**
  
  1576657500.835 20809-22043/com.practice.presto I/Videokit: libvideokit.so load Fail: /data/app/com.practice.presto-SSicBo_Qm4UXOQAQ45Vttg==/lib/arm/libvideokit.so
  
  1576657500.835 20809-22043/com.practice.presto I/Videokit: args is not NULL
  
  1576657500.835 20809-22043/com.practice.presto I/Videokit: more then one arg
  
  1576657500.835 20809-22043/com.practice.presto I/Videokit: function symbol not found
  
  1576657500.835 20809-22043/com.practice.presto D/Videokit: Calling videokit run via loader
  
  1576657500.860 20809-22043/com.practice.presto A/libc: **Fatal signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0 in tid 22043 (Thread-19), pid 20809 (practice.presto)**

• Creating a shared library that statically includes ffmpeg

  10 octobre 2017, par El Sampsa

  I’m having hard time trying to create a shared library that has ffmpeg libraries "baked in" as static ones.

  Consider the following directory schema :

  include/
  
    my own .h files
  
    ext/
  
      ffmpeg .h files
  
  lib/
  
    libav*.a archive files (softlinks to the actual .a files)
  
    libValkka.so (my shared library)
  
  test/
  
    mytest.cpp
  
  bin/
  
    (binaries appear here)

  I’ve come a long way (see Including objects to a shared library from a C++ archive (.a) ) and the library compiles ok with this : ([STUFF] has been omitted for brevity)

  /usr/bin/c++ -fPIC -std=c++14 -pthread -Iinclude/ext -I/usr/include/libdrm -g -shared -Wl,-soname,libValkka.so -o lib/libValkka.so CMakeFiles/Valkka.dir/src/avthread.cpp.o CMakeFiles/Valkka.dir/src/opengl.cpp.o CMakeFiles/Valkka.dir/src/openglthread.cpp.o [STUFF] CMakeFiles/Valkka.dir/src/filters.cpp.o -lX11 -lGLEW -lGLU -lGL -Wl,—allow-multiple-definition -Wl,-Bsymbolic -Wl,—whole-archive -Wreorder lib/libavdevice.a lib/libavfilter.a lib/libavformat.a lib/libavcodec.a lib/libavutil.a lib/libswscale.a lib/libswresample.a -Wl,—no-whole-archive

  However, when creating executables - their source code does not use any ffmpeg api (just my own api) - with :

  c++ -std=c++14 -pthread -Iinclude -Iinclude/ext -Llib test/mytest.cpp -lValkka -g -o bin/mytest

  I get a hoard of errors about missing ffmpeg dependencies. Not everything is missing, just some weird stuff :

  lib/libValkka.so: undefined reference to `pa_stream_get_index'
  
  lib/libValkka.so: undefined reference to `deflateInit_'
  
  lib/libValkka.so: undefined reference to `pa_stream_get_state'
  
  lib/libValkka.so: undefined reference to `lzma_stream_decoder'
  
  lib/libValkka.so: undefined reference to `BZ2_bzDecompress'
  
  lib/libValkka.so: undefined reference to `vaInitialize'
  
  lib/libValkka.so: undefined reference to `pa_stream_unref'
  
  lib/libValkka.so: undefined reference to `deflateInit2_'
  
  lib/libValkka.so: undefined reference to `snd_pcm_close'
  
  ...
  
  lib/libValkka.so: undefined reference to `vaGetDisplayDRM'
  
  lib/libValkka.so: undefined reference to `vaMaxNumEntrypoints'
  
  lib/libValkka.so: undefined reference to `uncompress'
  
  lib/libValkka.so: undefined reference to `pa_stream_drop'
  
  lib/libValkka.so: undefined reference to `pa_context_connect'
  
  lib/libValkka.so: undefined reference to `FT_Get_Kerning'
  
  lib/libValkka.so: undefined reference to `ass_free_track'
  
  lib/libValkka.so: undefined reference to `pa_operation_unref'
  
  lib/libValkka.so: undefined reference to `FT_Stroker_Done'
  
  lib/libValkka.so: undefined reference to `vaTerminate'
  
  lib/libValkka.so: undefined reference to `ass_new_track'
  
  lib/libValkka.so: undefined reference to `jack_client_close'
  
  ...
  
  lib/libValkka.so: undefined reference to `xcb_xfixes_query_version'
  
  lib/libValkka.so: undefined reference to `xcb_shape_rectangles'
  
  lib/libValkka.so: undefined reference to `pa_mainloop_free'
  
  lib/libValkka.so: undefined reference to `snd_device_name_hint'
  
  lib/libValkka.so: undefined reference to `vaCreateImage'
  
  lib/libValkka.so: undefined reference to `vaBeginPicture'
  
  lib/libValkka.so: undefined reference to `DtsSetColorSpace'
  
  lib/libValkka.so: undefined reference to `vaDestroyConfig'
  
  lib/libValkka.so: undefined reference to `pa_stream_writable_size'
  
  lib/libValkka.so: undefined reference to `snd_pcm_hw_params_get_buffer_size_max'
  
  lib/libValkka.so: undefined reference to `ass_read_file'

  This is pretty frustrating, especially when I can see that those names are included in the shared library..!

  nm lib/libValkka.so | grep "vaBeginPicture"

  gives

  U vaBeginPicture

  etc. I thought it might be a problem regarding the dependency order the archive .a files, and also tried with :

  ..... -Wl,—allow-multiple-definition -Wl,-Bsymbolic -Wl,—start-group -Wl,—whole-archive -Wreorder lib/libavdevice.a lib/libavfilter.a lib/libavformat.a lib/libavcodec.a lib/libavutil.a lib/libswscale.a lib/libswresample.a -Wl,—no-whole-archive -Wl,—end-group

  But the problem persists.

  I have succesfully created a shared library that does not "bake in" those .a archives, i.e. that just depends dynamically on ffmpeg libraries, and there are no such problems.

  I am baffled.. Have I misunderstood something fundamental, forgot some annoying linked option, or both ? Help appreciated !