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• Not able to trim video using "com.arthenica:mobile-ffmpeg-full:4.4"

  20 avril 2021, par UMESH GARG

  I need help in trimming the video in android using : 'mobile-FFmpeg

  


  I posted my code below, which I used to trim the video but every time it goes to the else block(every it fails for android:11,9).
Please help me out.
Thanks in advance

  


  Code :
val cmd = arrayOf("-i", trimmerData.srcPath, "-ss", startTime, "-t", endTime,
"-s", "320x240", "-r", "25", "-vcodec", "mpeg4", "-b:v", "2097152", "-b:a", "48000", "-ac", "2", "-ar", "22050",
"-c", "copy", trimmerData.dstPath)

  


  val rc = FFmpeg.execute(cmd)

    if (rc == RETURN_CODE_SUCCESS) {
        Log.i(Config.TAG, "Command execution completed successfully.")
        scanTrimFile(trimmerData)
    } else if (rc == RETURN_CODE_CANCEL) {
        Log.i(Config.TAG, "Command execution cancelled by user.")
    } else {
        Log.i(Config.TAG, String.format("Command execution failed with rc=%d and the output below.", rc))
        Config.printLastCommandOutput(Log.INFO)
        showTrimmingError()
    }

private fun scanTrimFile(trimmerData: TrimmerData) {
mediaScannerConnection = MediaScannerConnection(this,
object : MediaScannerConnection.MediaScannerConnectionClient {
override fun onMediaScannerConnected() {
mediaScannerConnection.scanFile(trimmerData.dstPath, "video/*")
}

                override fun onScanCompleted(path: String?, uri: Uri?) {
                    mediaScannerConnection.disconnect()
                    dismissWaitingDialog()
                    getResult(Uri.parse(trimmerData.dstPath))
                }

            })
    mediaScannerConnection.connect()
}


  


  Logs :

  


  2021-04-20 13:05:12.869 27051-27051/org.xyz.abc I/mobile-ffmpeg: Loading mobile-ffmpeg.
2021-04-20 13:05:12.880 27051-27051/org.xyz.abc I/mobile-ffmpeg: Loaded mobile-ffmpeg-full-arm64-v8a-4.4-20200725.
2021-04-20 13:05:12.880 27051-30377/org.xyz.abc D/mobile-ffmpeg: Callback thread started.
2021-04-20 13:05:12.881 27051-30377/org.xyz.abc I/mobile-ffmpeg: ffmpeg version v4.4-dev-416
2021-04-20 13:05:12.881 27051-30377/org.xyz.abc I/mobile-ffmpeg:  Copyright (c) 2000-2020 the FFmpeg developers
2021-04-20 13:05:12.881 27051-30377/org.xyz.abc I/mobile-ffmpeg:   built with Android (6454773 based on r365631c2) clang version 9.0.8 (https://android.googlesource.com/toolchain/llvm-project 98c855489587874b2a325e7a516b99d838599c6f) (based on LLVM 9.0.8svn)
2021-04-20 13:05:12.881 27051-30377/org.xyz.abc I/mobile-ffmpeg:   configuration: --cross-prefix=aarch64-linux-android- --sysroot=/files/android-sdk/ndk/21.3.6528147/toolchains/llvm/prebuilt/linux-x86_64/sysroot --prefix=/home/taner/Projects/mobile-ffmpeg/prebuilt/android-arm64/ffmpeg --pkg-config=/usr/bin/pkg-config --enable-version3 --arch=aarch64 --cpu=armv8-a --cc=aarch64-linux-android24-clang --cxx=aarch64-linux-android24-clang++ --extra-libs='-L/home/taner/Projects/mobile-ffmpeg/prebuilt/android-arm64/cpu-features/lib -lndk_compat' --target-os=android --enable-neon --enable-asm --enable-inline-asm --enable-cross-compile --enable-pic --enable-jni --enable-optimizations --enable-swscale --enable-shared --enable-v4l2-m2m --disable-outdev=fbdev --disable-indev=fbdev --enable-small --disable-openssl --disable-xmm-clobber-test --disable-debug --enable-lto --disable-neon-clobber-test --disable-programs --disable-postproc --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --disable-static --disable-sndio --disable-schannel --disable-securetransport --disable-xlib --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --disable-videotoolbox --disable-audiotoolbox --disable-appkit --disable-alsa --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-gmp --enable-gnutls --enable-libmp3lame --enable-libass --enable-iconv --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libxml2 --enable-libopencore-amrnb --enable-libshine --enable-libspeex --enable-libwavpack --enable-libkvazaar --enable-libilbc --enable-libopus --enable-libsnappy --enable-libsoxr --enable-libaom --enable-libtwolame --disable-sdl2 --enable-libvo-amrwbenc --enable-zlib --enable-mediacodec
2021-04-20 13:05:12.881 27051-30377/org.xyz.abc I/mobile-ffmpeg:   libavutil      56. 55.100 / 56. 55.100
2021-04-20 13:05:12.881 27051-30377/org.xyz.abc I/mobile-ffmpeg:   libavcodec     58. 96.100 / 58. 96.100
2021-04-20 13:05:12.881 27051-30377/org.xyz.abc I/mobile-ffmpeg:   libavformat    58. 48.100 / 58. 48.100
2021-04-20 13:05:12.881 27051-30377/org.xyz.abc I/mobile-ffmpeg:   libavdevice    58. 11.101 / 58. 11.101
2021-04-20 13:05:12.881 27051-30377/org.xyz.abc I/mobile-ffmpeg:   libavfilter     7. 87.100 /  7. 87.100
2021-04-20 13:05:12.881 27051-30377/org.xyz.abc I/mobile-ffmpeg:   libswscale      5.  8.100 /  5.  8.100
2021-04-20 13:05:12.881 27051-30377/org.xyz.abc I/mobile-ffmpeg:   libswresample   3.  8.100 /  3.  8.100
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/Android/data/org.xyz.abc/files/Tch Plus Recorder/tch_video_1618904094681.mp4':
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg:   Metadata:
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg:     major_brand     : 
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: mp42
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg:     minor_version   : 
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: 0
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg:     compatible_brands: 
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: isommp42
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg:     creation_time   : 
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: 2021-04-20T07:35:06.000000Z
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg:     com.android.version: 
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: 11
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg:   Duration: 
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: 00:00:10.07
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: , start: 
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: 0.000000
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: , bitrate: 
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: 12089 kb/s
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg:     Stream #0:0
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: (eng)
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: : Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720, 11998 kb/s
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: , SAR 1:1 DAR 16:9
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: , 
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: 29.81 fps, 
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: 30 tbr, 
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: 90k tbn, 
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: 180k tbc
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg:  (default)
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg:     Metadata:
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg:       rotate          : 
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: 90
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg:       creation_time   : 
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: 2021-04-20T07:35:06.000000Z
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg:       handler_name    : 
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg: VideoHandle
2021-04-20 13:05:12.897 27051-30377/org.xyz.abc I/mobile-ffmpeg:     Side data:
2021-04-20 13:05:12.898 27051-30377/org.xyz.abc I/mobile-ffmpeg:       
2021-04-20 13:05:12.898 27051-30377/org.xyz.abc I/mobile-ffmpeg: displaymatrix: rotation of -90.00 degrees
2021-04-20 13:05:12.898 27051-30377/org.xyz.abc I/mobile-ffmpeg:     Stream #0:1
2021-04-20 13:05:12.898 27051-30377/org.xyz.abc I/mobile-ffmpeg: (eng)
2021-04-20 13:05:12.898 27051-30377/org.xyz.abc I/mobile-ffmpeg: : Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 96 kb/s
2021-04-20 13:05:12.898 27051-30377/org.xyz.abc I/mobile-ffmpeg:  (default)
2021-04-20 13:05:12.898 27051-30377/org.xyz.abc I/mobile-ffmpeg:     Metadata:
2021-04-20 13:05:12.898 27051-30377/org.xyz.abc I/mobile-ffmpeg:       creation_time   : 
2021-04-20 13:05:12.898 27051-30377/org.xyz.abc I/mobile-ffmpeg: 2021-04-20T07:35:06.000000Z
2021-04-20 13:05:12.898 27051-30377/org.xyz.abc I/mobile-ffmpeg:       handler_name    : 
2021-04-20 13:05:12.898 27051-30377/org.xyz.abc I/mobile-ffmpeg: SoundHandle
2021-04-20 13:05:12.898 27051-30377/org.xyz.abc E/mobile-ffmpeg: /storage/emulated/0/TchTrimVideo/tch_trim_Video1618904108454.mp4: No such file or directory
2021-04-20 13:05:12.898 27051-27051/org.xyz.abc I/mobile-ffmpeg: Command execution failed with rc=1 and the output below.
2021-04-20 13:05:12.899 27051-27051/org.xyz.abc I/mobile-ffmpeg: ffmpeg version v4.4-dev-416 Copyright (c) 2000-2020 the FFmpeg developers
      built with Android (6454773 based on r365631c2) clang version 9.0.8 (https://android.googlesource.com/toolchain/llvm-project 98c855489587874b2a325e7a516b99d838599c6f) (based on LLVM 9.0.8svn)
      configuration: --cross-prefix=aarch64-linux-android- --sysroot=/files/android-sdk/ndk/21.3.6528147/toolchains/llvm/prebuilt/linux-x86_64/sysroot --prefix=/home/taner/Projects/mobile-ffmpeg/prebuilt/android-arm64/ffmpeg --pkg-config=/usr/bin/pkg-config --enable-version3 --arch=aarch64 --cpu=armv8-a --cc=aarch64-linux-android24-clang --cxx=aarch64-linux-android24-clang++ --extra-libs='-L/home/taner/Projects/mobile-ffmpeg/prebuilt/android-arm64/cpu-features/lib -lndk_compat' --target-os=android --enable-neon --enable-asm --enable-inline-asm --enable-cross-compile --enable-pic --enable-jni --enable-optimizations --enable-swscale --enable-shared --enable-v4l2-m2m --disable-outdev=fbdev --disable-indev=fbdev --enable-small --disable-openssl --disable-xmm-clobber-test --disable-debug --enable-lto --disable-neon-clobber-test --disable-programs --disable-postproc --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --disable-static --disable-sndio --disable-schannel --disable-securetransport --disable-xlib --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --disable-videotoolbox --disable-audiotoolbox --disable-appkit --disable-alsa --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-gmp --enable-gnutls --enable-libmp3lame --enable-libass --enable-iconv --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libxml2 --enable-libopencore-amrnb --enable-libshine --enable-libspeex --enable-libwavpack --enable-libkvazaar --enable-libilbc --enable-libopus --enable-libsnappy --enable-libsoxr --enable-libaom --enable-libtwolame --disable-sdl2 --enable-libvo-amrwbenc --enable-zlib --enable-mediacodec
      libavutil      56. 55.100 / 56. 55.100
      libavcodec     58. 96.100 / 58. 96.100
      libavformat    58. 48.100 / 58. 48.100
      libavdevice    58. 11.101 / 58. 11.101
      libavfilter     7. 87.100 /  7. 87.100
      libswscale      5.  8.100 /  5.  8.100
      libswresample   3.  8.100 /  3.  8.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/Android/data/org.xyz.abc/files/Tch Plus Recorder/tch_video_1618904094681.mp4':
      Metadata:
        major_brand     : mp42
        minor_version   : 0
        compatible_brands: isommp42
        creation_time   : 2021-04-20T07:35:06.000000Z
        com.android.version: 11
      Duration: 00:00:10.07, start: 0.000000, bitrate: 12089 kb/s
        Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720, 11998 kb/s, SAR 1:1 DAR 16:9, 29.81 fps, 30 tbr, 90k tbn, 180k tbc (default)
        Metadata:
          rotate          : 90
          creation_time   : 2021-04-20T07:35:06.000000Z
          handler_name    : VideoHandle
        Side data:
          displaymatrix: rotation of -90.00 degrees
        Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 96 kb/s (default)
        Metadata:
          creation_time   : 2021-04-20T07:35:06.000000Z
          handler_name    : SoundHandle
    /storage/emulated/0/TchTrimVideo/tch_trim_Video1618904108454.mp4: No such file or directory


  


• How can I get matplotlib to show full subplots in an animation ?

  12 mars 2015, par Matt Stone

  I’m trying to write a simple immune system simulator. I’m modeling infected tissue as a simple grid of cells and various intracellular signals, and I’d like to animate movement of cells in one plot and the intensity of viral presence in another as the infection progresses. I’m doing so with the matshow function provided by matplotlib. However, when I plot the two next to each other, the full grid gets clipped unless I stretch out the window myself. I can’t address the problem at all when saving to an mp4.

  Here’s the default view, which is identical to what I observe when saving to mp4 :
  

  And here’s what it looks like after stretching out the viewer window
  

  I’m running Python 2.7.9 with matplotlib 1.4.2 on OS X 10.10.2, using ffmpeg 2.5.2 (installed via Homebrew). Below is the code I’m using to generate the animation. I tried using plt.tight_layout() but it didn’t affect the problem. If anyone has any advice as to how to solve this, I’d really appreciate it ! I’d especially like to be able to save it without viewing with plt.show(). Thanks !

  def animate(self, fname=None, frames=100):
  
      fig, (agent_ax, signal_ax) = plt.subplots(1, 2, sharey=True)
  
  
  
      agent_ax.set_ylim(0, self.grid.shape[0])
  
      agent_ax.set_xlim(0, self.grid.shape[1])
  
      signal_ax.set_ylim(0, self.grid.shape[0])
  
      signal_ax.set_xlim(0, self.grid.shape[1])
  
  
  
      agent_mat = agent_ax.matshow(self.display_grid(),
  
                                   vmin=0, vmax=10)
  
      signal_mat = signal_ax.matshow(self.signal_display(virus),
  
                                     vmin=0, vmax=20)
  
      fig.colorbar(signal_mat)
  
  
  
      def anim_update(tick):
  
          self.update()
  
          self.diffuse()
  
          agent_mat.set_data(self.display_grid())
  
          signal_mat.set_data(self.signal_display(virus))
  
          return agent_mat, signal_mat
  
  
  
      anim = animation.FuncAnimation(fig, anim_update, frames=frames,
  
                                     interval=3000, blit=False)
  
  
  
      if fname:
  
          anim.save(fname, fps=5, extra_args=['-vcodec', 'libx264'])
  
      else:
  
          plt.show()

• How to set yuv to full range in a mpeg2video ?

  7 mai 2021, par Jefferson Villasan Josol

  I've found out that YUV420P has a limited range based on MediaInfo. How can I set that into Full range using ffmpeg ? Does anyone know how to set it into Full ?
I'm currently using mpeg2video -q:v 0 because it has an acceptable quality and small file sizes compared to x264 -crf 0.
Thanks in advance for those who can help me !

  


  Edit : I prefer mpeg2video because it is much faster compared to x264 encoding. And I've also noticed that -q:v 0 is better than -q:v 2. I don't know if it sounds strange but on my phone, the quality is really better if I use the -c:v mpeg2video -q:v 0