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• ffmpeg installation : pkg-config can't find package (using Homebrew)

  21 septembre 2018, par Rico Picone

  I’m trying to install ffmpeg with Homebrew using the command

  brew install ffmpeg --with-freetype

  but get

  ERROR: freetype2 not found using pkg-config

  If I check /usr/local/lib/pkgconfig, the file freetype2.pc exists. In fact,

  pkg-config --list-all

  includes freetype2.

  I’ve tried reinstalling pkg-config and freetype with Homebrew, reinstalling git, updating Homebrew, upgrading Homebrew, uninstalling and reinstalling all Homebrew packages, etc.

  brew doctor gives mostly a bunch of warnings about dylibs, config scripts, and header files, probably from recently moving to a new machine and copying files. I thought the config scripts might be related, but they’re all pyenv shims.

  I’m ok with a nuclear fix, but I feel like I’ve tried every nuclear option I know other than creating an entirely new user account.

• raspberry pi 3 OpenMax EmptyThisBuffer slow response when transcoding with libav or ffmpeg

  29 septembre 2016, par A. H.

  The context is transcoding on a Raspberry Pi 3 from 1080i MPEG2 TS to 1080p@30fps H264 MP4 using libav avconv or ffmpeg. Both are using almost idenitical omx.c source file and share the same result.

  The performance is short of 30fps (about 22fps) which makes it unsuitable for live transcoding without reducing the frame rate.

  By timestamping the critical code, I noticed the following :

  1. OMX_EmptyThisBuffer can take 10-20 msec to return. The spec/document indicates that this should be < 5msec. This along would almost account for the performance deficit. Can someone explains why this OMX call is out of spec ?

  2. In omx.c, a zerocopy option is used to optimized the image copying performance. But the precondition (contiguous planes and stride alignment) for this code is never satisfied and this the optimization was never in effect. Can someone explain how this zerocopy optimization can be employed ?

  Additional question on h264_omx encoder : it seems to on accept MP4 or raw H264 output format. How difficult it is to add other format, e.g. TS ?

  Thanks

• android:video watermark show error

  27 avril 2016, par Sakibmohammad Syed

  I want to watermark video and below is my code but when I try to run then it show error like Failed to validate license file, existing!.

      public class MainActivity extends AppCompatActivity {
  
      private String strAudioFolderPath;
  
      @Override
  
      protected void onCreate(Bundle savedInstanceState) {
  
          super.onCreate(savedInstanceState);
  
          setContentView(R.layout.activity_main);
  
  
  
          // here my ffmpeg command to watermark video.
  
          String s = "ffmpeg -i /sdcard/Download/testing.mp4 -i /sdcard/temp1.jpg -filter_complex 'overlay=10:main_h-overlay_h-10' /sdcard/Download/out.mp4";
  
  
  
          GeneralUtils.deleteFileUtil(strAudioFolderPath + "vk.log");
  
          PowerManager powerManager = (PowerManager) this.getSystemService(Activity.POWER_SERVICE);
  
          PowerManager.WakeLock wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "VK_LOCK");
  
          wakeLock.acquire();
  
          LoadJNI vk = new LoadJNI();
  
          try {
  
              try {
  
                  vk.run(GeneralUtils.utilConvertToComplex(s), strAudioFolderPath, MainActivity.this);
  
                  Log.e("Checking water marker", ">>>>>>>>>>>>>>>");
  
  
  
              } catch (Throwable e) {
  
              } finally {
  
                  if (wakeLock.isHeld())
  
                      wakeLock.release();
  
                  else {
  
                  }
  
              }
  
          } catch (Exception e)
  
          {
  
              e.printStackTrace();
  
          }        
  
      }
  
  }

  and error show in logcat like below.

      04-26 17:13:18.211 20492-20492/com.example.android.watermarkvideo I/Videokit: license file not found...
  
  04-26 17:13:18.211 20492-20492/com.example.android.watermarkvideo I/Videokit: license file /sdcard/Download/testing.mp4/ffmpeglicense.lic not created.
  
  04-26 17:13:18.211 20492-20492/com.example.android.watermarkvideo D/Videokit: license check rc: -3
  
  04-26 17:13:18.211 20492-20492/com.example.android.watermarkvideo E/Videokit: Failed to validate license file, existing!

  Actually I have used ffmpeg library to watermak on video file but it is not woking as well as I have not find any proper solution so please help.
  Thanks in advance.