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• Didn't find class "org.bytedeco.javacpp.avutil" in JAVACV version 1.2 on Android

  26 juillet 2016, par Eloy Palao

  I read a lot of answers but i can’t resolve my bug. The error is :

  java.lang.NoClassDefFoundError: java.lang.ClassNotFoundException: org.bytedeco.javacpp.avutil
  
                                                                         at org.bytedeco.javacpp.Loader.load(Loader.java:469)
  
                                                                         at org.bytedeco.javacpp.Loader.load(Loader.java:409)
  
                                                                         at org.bytedeco.javacpp.avcodec$AVPacket.<clinit>(avcodec.java:1559)
  
                                                                         at org.bytedeco.javacv.FFmpegFrameRecorder.<init>(FFmpegFrameRecorder.java:149)
  
                                                                         at org.bytedeco.javacv.FFmpegFrameRecorder.<init>(FFmpegFrameRecorder.java:126)
  
  </init></init></clinit>

  To configure JAVACV, I only put some lines in the gradle, but i don’t know if i have to do something more to configure it. I read about jniLibs folder, but this grade lines do not generate any folders. Also I read about compileSDKVersion 22 but I did it and do not resolve the problem.

  Please I need help, because I read a lot of post and bugs but any of them resolve me the problem.

      apply plugin: 'com.android.application'
  
  
  
  android {
  
      compileSdkVersion 23
  
      buildToolsVersion '23.0.3'
  
  
  
      defaultConfig {
  
          applicationId "com.eloyfranapps.daym"
  
          minSdkVersion 15
  
          targetSdkVersion 23
  
          versionCode 1
  
          versionName "1.0"
  
      }
  
      buildTypes {
  
          release {
  
              minifyEnabled false
  
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
  
          }
  
      }
  
  
  
      packagingOptions {
  
          exclude 'META-INF/maven/org.bytedeco.javacpp-presets/opencv/pom.properties'
  
          exclude 'META-INF/maven/org.bytedeco.javacpp-presets/opencv/pom.xml'
  
          exclude 'META-INF/maven/org.bytedeco.javacpp-presets/ffmpeg/pom.properties'
  
          exclude 'META-INF/maven/org.bytedeco.javacpp-presets/ffmpeg/pom.xml'
  
      }
  
  }
  
  
  
  configurations {
  
      all*.exclude group: 'org.bytedeco', module: 'javacpp-presets'
  
  }
  
  
  
  dependencies {
  
      compile fileTree(include: ['*.jar'], dir: 'libs')
  
      testCompile 'junit:junit:4.12'
  
      compile 'com.android.support:appcompat-v7:23.0.0'
  
      compile 'com.android.support:design:23.0.0'
  
      compile 'it.neokree:MaterialTabs:0.11'
  
      compile group: 'org.bytedeco', name: 'javacv', version: '1.2'
  
      compile group: 'org.bytedeco.javacpp-presets', name: 'opencv', version: '3.1.0-1.2', classifier: 'android-arm'
  
      compile group: 'org.bytedeco.javacpp-presets', name: 'opencv', version: '3.1.0-1.2', classifier: 'android-x86'
  
      compile group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '3.0.2-1.2', classifier: 'android-arm'
  
      compile group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '3.0.2-1.2', classifier: 'android-x86'
  
  }

  and the error is in the first line "new FFmpegFrameRecorder(outputPath, 1080, 1080) ;" of my code :

  FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(outputPath, 1080, 1080);
  
  
  
              recorder.setVideoQuality(12.5);
  
              recorder.setVideoCodec(13);
  
              recorder.setFormat("mp4");
  
              recorder.setFrameRate(fps);
  
              recorder.start();
  
              AndroidFrameConverter an = new AndroidFrameConverter();
  
              for (int i = 0; i < charFrames.size(); i++) {
  
                  Frame frame = an.convert(charFrames.get(i));
  
                  recorder.record(frame);
  
              }
  
              recorder.stop();

• How to quit pexpect launched ffmpeg with key q pressed

  25 février 2014, par Shuman

  i used pexpect to call ffmpeg which is a lengthy process. it took half an hour, how can i detect user has pressed q key to stop it ? just like when you press q when using ffmpeg command line tool

  the ffmpeg command line is
  ffmpeg -y -i url -c copy -absf aac_adtstoasc out.mp4

  the last line of ffmpeg output is

  ...
  
  Stream mapping:
  
    Stream #0:1 -> #0:0 (copy)
  
    Stream #0:2 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help
  
  frame=   84 fps= 77 q=-1.0 Lsize=  184626kB time=00:00:06.96 bitrate=217120.3kbits/s

  the code i have now is

  reo = re.compile("""\S+\s+(?P\d+)  # frame
  
                       \s\S+\s+(?P<fps>\d+)           # fps
  
                       \sq=(?P<q>\S+)                    # q
  
                       \s\S+\s+(?P<size>\S+)          # size
  
                       \stime=(?P<time>\S+)           # time
  
                       \sbitrate=(?P<bitrate>[\d\.]+) # bitrate
  
                       """, re.X)
  
  
  
  durationReo = (&#39;(?&lt;=Duration:\s)\S+(?=,)&#39;)
  
  
  
  cpl = thread.compile_pattern_list([
  
      pexpect.EOF,
  
      reo,
  
      durationReo
  
  ])
  
  
  
  while True:
  
      i = thread.expect_list(cpl, timeout=None)
  
      if i == 0: # EOF
  
          print "the sub process exited"
  
          break
  
      elif i == 1:
  
          frame_number = thread.match.group(0)
  
          print frame_number
  
          print reo.search(frame_number).groups()
  
          # thread.close
  
      elif i == 2:
  
          durationLine = thread.match.group(0)
  
          print &#39;Duration:&#39;, durationLine
  
          # print "something :",thread.match.group(1)
  
          pass
  
  </bitrate></time></size></q></fps>

  with this code i can already get the frame info and duration info, the ultimate goal is to create a textual progress bar with another python progressbar module. but with the ability to send the 'q' pressed signal to ffmpeg child process.

• lavc/vvc : Fix check whether QG is in first tile col

  19 mars 2024, par Frank Plowman

  lavc/vvc : Fix check whether QG is in first tile col
  The second part of this condition is intended to check whether the
  
  current quantisation group is in the first CTU column of the current
  
  tile.  The issue is that ctb_to_col_bd gives the x-ordinate of the first
  
  column of the current tile *in CTUs*, while xQg gives the x-ordinate of
  
  the quantisation group *in samples*.  Rectify this by shifting xQg by
  
  ctb_log2_size to get xQg in CTUs before comparing.
  Fixes FFVVC issues #201 and #203.
  

  • [DH] libavcodec/vvc/vvc_ctu.c