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• Android crashes when new FFmpegFrameRecorder()

  23 mai 2021, par James Yu

  I try to create rtsp stream (or video file) with bitmaps using FFmpegFrameRecorder, and I get this message in logcat at the very beginning of the process :

  


  Thread[6,tid=2010,WaitingInMainSignalCatcherLoop,Thread*=0x795a268000,peer=0x12ec00b8,"Signal Catcher"]: reacting to signal 3


  


  and get

  


  SIGILL (signal SIGILL: illegal instruction)


  


  in debug tag, then my app hangs after these message shows up.
It is confirmed this SIGILL pops when new FFmpegFrameRecorder() is invoked, I wonder why it complains illegal instruction ?

  


  This is how I create an instance of FFmpegFrameRecorder :

  


      private void startRecorder() {
        if(recorder != null) { return; }
        recorder = new FFmpegFrameRecorder("/sdcard/test.flv", 640, 480, 0);
        recorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);
        recorder.setFormat("flv");
        recorder.setFrameRate(25);
        recorder.setInterleaved(true);
        recorder.setVideoOption("crf", Integer.toString(25));
        recorder.setPixelFormat(0);
        recorder.setGopSize(-1);
        recorder.setVideoOption("tune", "zerolatency");
        recorder.setVideoOption("preset", "ultrafast");
        try {
            recorder.start();
        } catch (FFmpegFrameRecorder.Exception e) {
            Log.e("sensetime", e.getMessage(), e);
        }
    }


  


  Environment information is as follows :

  


  Hardware: Qualcomm SDM660
Android: 10


  


  Dependencies in build.gradle :

  


  implementation group: 'org.bytedeco', name: 'javacv', version: '1.5.5'
implementation group: 'org.bytedeco', name: 'javacpp', version: '1.5.5'
implementation group: 'org.bytedeco', name: 'javacpp', version: '1.5.5', classifier: 'android-arm64'
implementation group: 'org.bytedeco', name: 'javacpp', version: '1.5.5', classifier: 'android-arm'
implementation group: 'org.bytedeco', name: 'ffmpeg', version: '4.3.2-1.5.5'
implementation group: 'org.bytedeco', name: 'ffmpeg', version: '4.3.2-1.5.5', classifier: 'android-arm64'
implementation group: 'org.bytedeco', name: 'ffmpeg', version: '4.3.2-1.5.5', classifier: 'android-arm'


  


  packagingOptions in build.gradle :

  


  packagingOptions {
    pickFirst 'META-INF/native-image/android-arm64/jnijavacpp/jni-config.json'
    pickFirst 'META-INF/native-image/android-arm64/jnijavacpp/reflect-config.json'
    pickFirst 'META-INF/native-image/android-arm/jnijavacpp/reflect-config.json'
    pickFirst 'META-INF/native-image/android-arm/jnijavacpp/jni-config.json'
}


  


• Revision 37011 : Un petit test pour voir si ffmpeg2theora est dispo sur le serveur (pour ...

  6 avril 2010, par kent1@… — Log

  Un petit test pour voir si ffmpeg2theora est dispo sur le serveur (pour l’utiliser au cas où plus tard)

• passing additional values to s3 event notification for lambda consumption

  8 septembre 2017, par user1790300

  I have to write code in react-native that allows a user to upload videos to amazon s3 to be transcoded for consumption by various devices. For the processing after the upload occurs ; I am reviewing two approaches :

  1) I can use Lambda with ffmpeg to handle the transcoding immediately after the uploading occurs (my fear here would be the amount of time required to transcode the videos and the effect on pricing if it takes a considerable amount of time).

  2) I can have s3 pass an sns message to a rest api after the created event occurs and the rest api generate a rabbitmq message that will be processed by worker that will perform the transcoding using ffmpeg.

  Option 1) seems to be the preferable option based on a completion time perspective. How concerned should I be with using 1) considering how long video transcoding might take as opposed to option 2) ?

  Also, regardless, I need a way to pass additional parameters to lambda or along the sns messaging that would allow me to somehow associate the user who uploaded the video with their account. Is there a way to pass additional text-based values to s3 to pass along to lambda or along sns when the upload completes, as a caveat I plan to upload the video directly to s3 using the rest layer(found this answer here : http://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectPUT.html#RESTObjectPUT-responses-examples) ?