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• Record video with Media Recorder in WEBM format

  21 mai 2017, par Matho

  I need to record two videos via media recorder and process them with ffmpeg in Android. I want to read videos via pipe in ffmpeg command string. From what I have read, I could not use 3GPP/MP4 format, because these formats contains header at the end of video. Because of it, I want to use WEBM video format, but my app is crashing, when I use webm/vp8 setting in media recorder. Ffmpeg I’m using is : com.writingminds:FFmpegAndroid:0.3.2. Could you help me please ?

  RecorderPrepareTask :

  class RecorderPrepareTask extends AsyncTask {
  
  private Context mContext;
  
  
  
  public RecorderPrepareTask(Context context) {
  
      mContext = context;
  
  }
  
  
  
  @Override
  
  protected Boolean doInBackground(Void... voids) {
  
      Timber.d("Starting screen recording...");
  
  
  
      if (!outputRoot.exists() && !outputRoot.mkdirs()) {
  
          Timber.e("Unable to create output directory '%s'.", outputRoot.getAbsolutePath());
  
          return false;
  
      }
  
  
  
      recorder = new MediaRecorder();
  
      recorder.setVideoSource(SURFACE);
  
      recorder.setOutputFormat(MediaRecorder.OutputFormat.WEBM);
  
      recorder.setVideoEncoder(MediaRecorder.VideoEncoder.VP8);
  
      recorder.setVideoSize(Config.VIDEO_SIZE_W, Config.VIDEO_SIZE_H);
  
      recorder.setVideoFrameRate(Config.FRAME_RATE);
  
  
  
      Timber.i("Output file '%s'.", outputFileName);
  
      recorder.setOutputFile(RecordingActivity.pipe[1].getFileDescriptor());
  
  
  
  
  
      try {
  
          recorder.prepare();
  
      } catch (IOException e) {
  
          throw new RuntimeException("Unable to prepare MediaRecorder.", e);
  
      }
  
  
  
  
  
      projection = projectionManager.getMediaProjection(resultCode, data);
  
  
  
      Surface surface = recorder.getSurface();
  
      display = projection.createVirtualDisplay(DISPLAY_NAME, Config.VIDEO_SIZE_W, Config.VIDEO_SIZE_H, 560, VIRTUAL_DISPLAY_FLAG_PRESENTATION, surface, null, null);
  
  
  
      recorder.start();
  
  
  
      return true;
  
  }
  
  
  
  @Override
  
  protected void onPostExecute(Boolean result) {
  
  
  
  }

  }

  getConvertCmd :

  private String getConvertCmd(){
  
      return "-re -r 30 -f webm -c:v vp8 -i pipe:"+ RecordingActivity.pipe[0].getFd() + " -threads 2 -preset ultrafast -profile:v main -level 3.1 -b:v 440k -ar 44100 -ab 128k -s "+ Config.CAMERA_VIDEO_SIZE_W + "x" + Config.CAMERA_VIDEO_SIZE_H + " -vcodec vp8 -acodec vorbis " + outputFileName3;
  
  }

  Logs :

  D/SoftVPXEncoder: VP8: internalSetAndroidVp8Params. BRMode: 0. TS: 0. KF: 24. QP: 0 - 0 BR0: 100. BR1: 0. BR2: 0
  
  I/ACodec: setupVideoEncoder succeeded
  
  E/OMXNodeInstance: setConfig(1a:google.vp8.encoder, ConfigPriority(0x6f800002)) ERROR: Undefined(0x80001001)
  
  I/ACodec: codec does not support config priority (err -2147483648)
  
  W/ACodec: do not know color format 0x7f000789 = 2130708361
  
  I/SoftMPEG4Encoder: Construct SoftMPEG4Encoder
  
  I/MediaCodec: MediaCodec will operate in async mode
  
  E/OMXNodeInstance: getParameter(1b:google.mpeg4.encoder, ParamVideoErrorCorrection(0x6000007)) ERROR: NotImplemented(0x80001006)
  
  I/ACodec: setupVideoEncoder succeeded
  
  E/OMXNodeInstance: setConfig(1b:google.mpeg4.encoder, ConfigPriority(0x6f800002)) ERROR: Undefined(0x80001001)
  
  I/ACodec: codec does not support config priority (err -2147483648)
  
  D/SoftVPXEncoder: VP8: initEncoder. BRMode: 0. TSLayers: 0. KF: 24. QP: 0 - 0
  
  I/AudioFlinger: AudioFlinger's thread 0xb2440000 ready to run
  
  xW/AudioFlinger: acquireAudioSessionId() unknown client 10079 for session 7
  
  I/MediaCodec: MediaCodec will operate in async mode
  
  /system_process I/DisplayManagerService: Display device added: DisplayDeviceInfo{"RMR": uniqueId="virtual:sk.matho.rocket_monkeys.rocketmonkeysrecorder,10052,RMR,0", 480 x 640, modeId 6, defaultModeId 6, supportedModes [{id=6, width=480, height=640, fps=60.0}], density 560, 560.0 x 560.0 dpi, appVsyncOff 0, presDeadline 16666666, touch NONE, rotation 0, type VIRTUAL, state ON, owner sk.matho.rocket_monkeys.rocketmonkeysrecorder (uid 10052), FLAG_PRIVATE, FLAG_PRESENTATION}
  
  E/OMXNodeInstance: setConfig(1c:google.amrnb.encoder, ConfigPriority(0x6f800002)) ERROR: Undefined(0x80001001)
  
  I/ACodec: codec does not support config priority (err -2147483648)
  
  E/WebmElement: mmap64 failed; errno = 22
  
  E/WebmElement: fd 18; flags: 1
  
  E/WebmElement: mmap64 failed; errno = 22
  
  E/WebmElement: fd 18; flags: 1
  
  E/WebmElement: mmap64 failed; errno = 22
  
  E/WebmElement: fd 18; flags: 1
  
  E/WebmElement: mmap64 failed; errno = 22
  
  E/WebmElement: fd 18; flags: 1
  
  E/WebmElement: mmap64 failed; errno = 22
  
  E/WebmElement: fd 18; flags: 1
  
  E/WebmElement: mmap64 failed; errno = 22
  
  E/WebmElement: fd 18; flags: 1
  
  D/gralloc_ranchu: gralloc_alloc: format 1 and usage 0x10003 imply creation of host color buffer
  
  I/MediaCodecSource: MediaCodecSource (video) starting
  
  I/MediaCodecSource: MediaCodecSource (video) started
  
  D/MPEG4Writer: Video track stopping
  
  E/MPEG4Writer: Stop() called but track is not started
  
  D/MPEG4Writer: Audio track stopping
  
  E/MPEG4Writer: Stop() called but track is not started
  
  
  
  [ 05-21 13:03:44.101  9757: 9766 D/         ]
  
  HostConnection::get() New Host Connection established 0xb344f140, tid 9766
  
  /sk.matho.rocket_monkeys.rocketmonkeysrecorder E/MediaRecorder: start failed: -2147483648                                                                                                  
  
  /sk.matho.rocket_monkeys.rocketmonkeysrecorder E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #2
  
  Process: sk.matho.rocket_monkeys.rocketmonkeysrecorder, PID: 10079
  
  java.lang.RuntimeException: An error occurred while executing doInBackground()
  
  at android.os.AsyncTask$3.done(AsyncTask.java:309)
  
  at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)
  
  at java.util.concurrent.FutureTask.setException(FutureTask.java:223)
  
  at java.util.concurrent.FutureTask.run(FutureTask.java:242)
  
  at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
  
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
  
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
  
  at java.lang.Thread.run(Thread.java:818)
  
  Caused by: java.lang.RuntimeException: start failed.
  
  at android.media.MediaRecorder.start(Native Method)
  
  at sk.matho.rocket_monkeys.rocketmonkeysrecorder.recording.CameraRecordingSession$MediaPrepareTask.doInBackground(CameraRecordingSession.java:181)
  
  at sk.matho.rocket_monkeys.rocketmonkeysrecorder.recording.CameraRecordingSession$MediaPrepareTask.doInBackground(CameraRecordingSession.java:173)
  
  at android.os.AsyncTask$2.call(AsyncTask.java:295)
  
  at java.util.concurrent.FutureTask.run(FutureTask.java:237)
  
  at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234) 
  
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) 
  
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) 
  
  at java.lang.Thread.run(Thread.java:818) 
  
  
  
  [ 05-21 13:03:44.109  9757:10315 D/         ]
  
  HostConnection::get() New Host Connection established 0xb307c1c0, tid 10315

• Create conversion queue using ffmpeg and C #

  22 octobre 2017, par Alexei Agüero Alba

  Ok, the idea is to create a file queue that can be modified and reorganized (this is done) and for each file execute a ffmpeg process to convert it to another format.

  For conversion use Xabe.FFmpeg and .Net 4.5 all using async and await.

  The question would be how to execute an x ​​number of processes in parallel (example 4) of that variable queue and when one of them finishes executing the next one, keeping in execution always the same amount in parallel. I can start from scratch but I need ideas on how to do this in the simplest way possible. The program itself is simple (with gui) takes a folder and its subfolders all the video files and queues them and starts the conversion, you can add other folders with more files, and independent files reorder them, to convert whichever is the greater.

  At one point I found a package I think nuget (or github) that did exactly what I needed but I have not been able to get back.

  Thanks for your help in advance.

  Excuse the English because I use the translator of Google for being faster because my domain of this is limited but sufficient to understand the answers.

  ---

  Ok, I found what I was looking for called ProcessManager is a nupkg package. It has 2 years of development but seems stable. The only drawback is that it does not allow me to organize the conversion queue once you have added the files, although I have to try some ideas that maybe functions.

  var manager = new Manager(4); // Max 4 processes will be started simultaneously
  
  manager.Start();
  
  
  
  manager.ProcessErrorDataReceived += (sender, e) => Console.WriteLine(e.Data);
  
  manager.ProcessOutputDataReceived += (sender, e) => Console.WriteLine(e.Data);
  
  
  
  foreach (var videoFileName in Directory.EnumerateFiles("videos"))
  
  {
  
      var info = new ProcessInfo(
  
          "ffprobe.exe",
  
          string.Format("-v quiet -print_format json -show_format -show_streams \"{0}\"", videoFileName));
  
  
  
      manager.Queue(info);
  
  }

  Process Manager

• Couldn't open https stream - protocol not found (ffmpeg with openssl)

  25 avril 2017, par Victor Ponomarenko

  I received from compiled ffmpeg with openssl next message : Protocol not found. I’m testing on hls over https.

  The ffmpeg is 3.3 and openssl is 1.0.0a versions.

  I have next configure script :

  ./configure \
  
  --target-os=linux \
  
  --incdir=$BUILD_DIR/include/$ABI \
  
  --libdir=$BUILD_DIR/lib/$ABI \
  
  --prefix=$BUILD_DIR/lib/$ABI \
  
  --enable-cross-compile \
  
  --extra-libs="-lgcc" \
  
  --arch=$ARCH \
  
  --cc=$PREBUILT/bin/$HOST-gcc \
  
  --cross-prefix=$PREBUILT/bin/$HOST- \
  
  --nm=$PREBUILT/bin/$HOST-nm \
  
  --sysroot=$PLATFORM \
  
  --extra-cflags="$OPTIMIZE_CFLAGS -I${OPENSSL_INCLUDE_DIR}" \
  
  --extra-cxxflags="I${OPENSSL_INCLUDE_DIR}" \
  
  --extra-ldflags="-Wl,-rpath-link=${PLATFORM}usr/lib -L${PLATFORM}usr/lib -nostdlib -lc -lm -ldl -llog -lz -L${OPENSSL_BUILD_DIR}/${ABI}  $openssl_addi_ldflags -lssl -lcrypto" \
  
  --disable-static \
  
  --disable-ffplay \
  
  --disable-ffmpeg \
  
  --disable-ffprobe \
  
  --disable-ffserver \
  
  --disable-doc \
  
  --disable-symver \
  
  --disable-postproc \
  
  --disable-gpl \
  
  --disable-encoders \
  
  --disable-muxers \
  
  --disable-bsfs \
  
  --disable-protocols \
  
  --disable-indevs \
  
  --disable-outdevs \
  
  --disable-devices \
  
  --enable-shared \
  
  --enable-small \
  
  --enable-encoder=png \
  
  --enable-openssl \
  
  --enable-runtime-cpudetect \
  
  --enable-protocol=file,ftp,http,https,httpproxy,hls,mmsh,mmst,pipe,rtmp,rtmps,rtmpt,rtmpts,rtp,sctp,srtp,tcp,udp \
  
  --pkg-config=$(which pkg-config) \
  
  $ADDITIONAL_CONFIGURE_FLAG || die "Couldn't configure ffmpeg!"

  Before I configured it I received errors like openssl not found. I fixed that, but i try to load stream which works over https, I receives Protocol not found. Also, I think this is weird, after configuration https is missed in enabled protocols list.

  Enabled protocols:
  
  ffrtmphttp        hls               mmsh              rtmp          srtp
  
  file              http              mmst              rtmpt         tcp
  
  ftp               httpproxy         pipe              rtp           udp

  ---

  Update 23.04.2017

  My openssl build script :

  # environment variables
  
  top_root=$PWD
  
  src_root=${top_root}/src
  
  patch_root=${top_root}/patches
  
  dist_root=${top_root}/libs/openssl
  
  dist_bin_root=${dist_root}/bin
  
  dist_include_root=${dist_root}/include
  
  dist_lib_root=${dist_root}/lib
  
  build_log=${top_root}/openssl_build.log
  
  
  
  # create our folder structure
  
  cd ${top_root}
  
  test -d ${src_root} || mkdir -p ${src_root}
  
  test -d ${dist_root} || mkdir -p ${dist_root}
  
  test -d ${dist_bin_root} || mkdir -p ${dist_bin_root}
  
  test -d ${dist_include_root} || mkdir -p ${dist_include_root}
  
  test -d ${dist_lib_root} || mkdir -p ${dist_lib_root}
  
  touch ${build_log}
  
  
  
  rm -f ${build_log}
  
  
  
  echo "Building openssl-android ..."
  
  
  
  test -d ${src_root}/openssl-android || \
  
      git clone https://github.com/guardianproject/openssl-android.git ${src_root}/openssl-android >> ${build_log} 2>&1 || \
  
      die "Couldn't clone openssl-android repository!"
  
  cd ${src_root}/openssl-android
  
  
  
  ${NDK}/ndk-build >> ${build_log} 2>&1 || die "Couldn't build openssl-android!"
  
  
  
  # copy the versioned libraries
  
  #cp -r ${src_root}/openssl-android/libs/armeabi/lib*.so --parents ${dist_lib_root}/.
  
  rsync -a --include '*/' --include '*.so' --exclude '*' ${src_root}/openssl-android/libs/ ${dist_lib_root}/
  
  # copy the executables
  
  #cp -r ${src_root}/openssl-android/libs/armeabi/openssl ${dist_bin_root}/. # work only for one abi folder
  
  rsync -a --include '*/openssl' --exclude '*.so' ${src_root}/openssl-android/libs/ ${dist_bin_root}/
  
  #cp -r ${src_root}/openssl-android/libs/armeabi/ssltest ${dist_bin_root}/. # work only for one abi folder
  
  rsync -a --include '*/ssltest' --exclude '*.so' ${src_root}/openssl-android/libs/ ${dist_bin_root}/
  
  # copy the headers
  
  cp -r ${src_root}/openssl-android/include/* ${dist_include_root}/.
  
  
  
  cd ${top_root}

  Will thankful for any help.