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• app not installing on Android 4.2 or lower device

  19 août 2015, par user1235389

  My application uses ffmpeg native libary.
  Recently i upgraded ffmpeg library which is used in my application.

  But when i try to install the app on Android 4.0 or 4.2 devices, after installation, I cannot launch the app.

  it gives error on system.loadlibrary(lib.so)

  the log shows

  "cannot load library java.lang.unsatisfiedlinkerror"

  I can install the application succesfully on devices with Android version 4.4 or above.

  Kindly help me know why I cannot launch the application on version 4.0 or 4.2 devices.

• av(codec|device) : Don't cast pointers to int

  20 novembre 2021, par Andreas Rheinhardt

  av(codec|device) : Don't cast pointers to int
  C99/C11 6.3.2.3 5 : "Any pointer type may be converted to an integer
  
  type. [...] If the result cannot be represented in the integer type,
  
  the behavior is undefined." So stop casting pointers to int ; use
  
  uintptr_t instead.
  Reviewed-by : Michael Niedermayer <michael@niedermayer.cc>
  
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavcodec/dvdec.c
  • [DH] libavcodec/x86/h264_qpel.c
  • [DH] libavcodec/x86/me_cmp_init.c
  • [DH] libavcodec/x86/mpegvideoenc_template.c
  • [DH] libavdevice/xcbgrab.c

• FFmpeg + vaapi for encoding, generating error of No VA display found for device : /dev/dri/renderD128

  5 janvier 2019, par User800222

  I’m trying to use vaapi with ffmpeg for vp9’s hwaccel.

  The prebuilt ffmpeg I installed doesn’t have —enable-vaapi, but does have vp9_vaapi, h264_vaapi, etc encoders.

  I also found someone had the same situation of ffmepg but can run vaapi without problems.

  So I’ve tried either comment line and in code to use vaapi for encoding, but both generate same error code of -22.

  Environment :
  Mac OS
  Compile code on ubuntu 16.04 in a docker container
  FFmpeg version :
  root@6161d6e22c8f :/# ffmpeg -hwaccels
  ffmpeg version 4.0.3-1 16.04.york0 Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1 16.04.10) 20160609
  configuration : —prefix=/usr —extra-version=’1 16.04.york0’ —toolchain=hardened —libdir=/usr/lib/x86_64-linux-gnu —incdir=/usr/include/x86_64-linux-gnu —arch=amd64 —enable-gpl —disable-stripping —enable-avresample —disable-filter=resample —enable-avisynth —enable-gnutls —enable-ladspa —enable-libaom —enable-libass —enable-libbluray —enable-libbs2b —enable-libcaca —enable-libcdio —enable-libcodec2 —enable-libflite —enable-libfontconfig —enable-libfreetype —enable-libfribidi —enable-libgme —enable-libgsm —enable-libjack —enable-libmp3lame —enable-libmysofa —enable-libopenjpeg —enable-libopenmpt —enable-libopus —enable-libpulse —enable-librsvg —enable-librubberband —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libspeex —enable-libssh —enable-libtheora —enable-libtwolame —enable-libvidstab —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx265 —enable-libxml2 —enable-libxvid —enable-libzmq —enable-libzvbi —enable-lv2 —enable-omx —enable-openal —enable-opengl —enable-sdl2 —enable-libdc1394 —enable-libdrm —enable-libiec61883 —enable-chromaprint —enable-frei0r —enable-libopencv —enable-libx264 —enable-shared
  libavutil 56. 14.100 / 56. 14.100
  libavcodec 58. 18.100 / 58. 18.100
  libavformat 58. 12.100 / 58. 12.100
  libavdevice 58. 3.100 / 58. 3.100
  libavfilter 7. 16.100 / 7. 16.100
  libavresample 4. 0. 0 / 4. 0. 0
  libswscale 5. 1.100 / 5. 1.100
  libswresample 3. 1.100 / 3. 1.100
  libpostproc 55. 1.100 / 55. 1.100
  Hardware acceleration methods :
  vdpau
  vaapi
  drm
  

  (comment line:)
  
  ffmpeg -init_hw_device vaapi=foo:/dev/dri/renderD128
  
  
  
  &
  
  
  
  (in code:)
  
  err = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_VAAPI,
  
                               NULL, NULL, 0);
  
  if (err < 0) 
  
  {
  
      fprintf(stderr, "Failed to create a VAAPI device. Error code: %s\n", av_err2str(err));
  
      goto close;
  
  }

  Error generated :
  [AVHWDeviceContext @ 0x55bb3744bf40] No VA display found for device : /dev/dri/renderD128.
  Device creation failed : -22.
  Failed to set value ’vaapi=foo :/dev/dri/renderD128’ for option ’init_hw_device’ : Invalid argument
  Error parsing global options : Invalid argument