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Autres articles (75)

  • MediaSPIP version 0.1 Beta

    16 avril 2011, par

    MediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
    Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
    Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
    Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Personnaliser en ajoutant son logo, sa bannière ou son image de fond

    5 septembre 2013, par

    Certains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;

Sur d’autres sites (10702)

  • sh : ffmpeg : command not found using php in online

    7 mai 2015, par Intrepid Uliyar

    I have using ffmpeg for generating thumbnail from video.it’s working fine in local host.but not generated in online, it just throw "sh : ffmpeg : command not found".

    I have check the ffmpeg.exe, and also given video file path, and image destination path..what’s wrong with me..

     $ffmpeg="ffmpeg.exe";
    

    
//time to take screenshot at
    
    $interval1 = 2;
    

    
    //screenshot size
    
    $size = '320x240';
    

    
$cmd1 = "$ffmpeg -i $video -deinterlace -an -ss $interval1 -f mjpeg -t 1 -r 1 -y -s $size $image1 2>&1";

  • Manage multipe IP cameras at the same time

    4 juin 2015, par Alessio

    How I can manage multiple GoPro cameras at the same time ? I want to stream three videos of three GoPro cameras at the same time and record the videos on the hard disk.

    I have written a tool in Java for one GoPro and it works correctly.

    Help me please !

    This is the code :

    public class GoProStreamer extends JFrame {
    

    
private static final String CAMERA_IP = "10.5.5.9";
    
private static int PORT = 8080;
    
private static DatagramSocket mOutgoingUdpSocket;
    
private Process streamingProcess;
    
private Process writeVideoProcess;
    
private KeepAliveThread mKeepAliveThread;
    

    
private JPanel contentPane;
    

    
public GoProStreamer() {
    
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    
    setBounds(800, 10, 525, 300);
    

    
    contentPane = new JPanel();
    
    contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
    
    contentPane.setLayout(new BorderLayout(0, 0));
    
    setContentPane(contentPane);
    

    
    JButton btnStop = new JButton("Stop stream");
    
    JButton btnStart = new JButton("Start stream");
    
    JButton btnRec = new JButton("Rec");
    
    JButton btnStopRec = new JButton("Stop Rec");
    
    //      JButton btnZoomIn = new JButton("Zoom In sincrono");
    
    //      JButton btnZoomOut = new JButton("Zoom out sincrono");
    
    //      JButton btnZoomIn1 = new JButton("Zoom In Camera 1");
    
    //      JButton btnZoomOut1 = new JButton("Zoom out Camera 1");
    
    //      JButton btnZoomIn2 = new JButton("Zoom in Camera 2");
    
    //      JButton btnZoomOut2 = new JButton("Zoom out Camera 2");
    
    //      JButton btnZoomIn3 = new JButton("Zoom in camera 3");
    
    //      JButton btnZoomOut3 = new JButton("Zoom out Camera 3");
    

    
    btnStop.setEnabled(false);
    
    btnRec.setEnabled(false);
    
    btnStopRec.setEnabled(false);
    
    //      btnZoomIn.setEnabled(false);
    
    //      btnZoomOut.setEnabled(false);
    
    //      btnZoomIn1.setEnabled(false);
    
    //      btnZoomOut1.setEnabled(false);
    
    //      btnZoomIn2.setEnabled(false);
    
    //      btnZoomOut2.setEnabled(false);
    
    //      btnZoomIn3.setEnabled(false);
    
    //      btnZoomOut3.setEnabled(false);
    

    
    JPanel panel = new JPanel();
    
    //      JPanel panel2 = new JPanel();
    
    //      JPanel panel3 = new JPanel();
    
    //      JPanel panel4 = new JPanel();
    

    
    panel.add(btnStart);
    
    panel.add(btnStop);
    
    panel.add(btnRec);
    
    panel.add(btnStopRec);
    
    //      panel2.add(btnZoomIn1);
    
    //      panel3.add(btnZoomOut1);
    
    //      panel2.add(btnZoomIn2);
    
    //      panel3.add(btnZoomOut2);
    
    //      panel2.add(btnZoomIn3);
    
    //      panel3.add(btnZoomOut3);
    
    //      panel4.add(btnZoomIn);
    
    //      panel4.add(btnZoomOut);
    

    
    contentPane.add(panel, BorderLayout.SOUTH);
    
    //  contentPane.add(panel2, BorderLayout.NORTH);
    
    //  contentPane.add(panel3, BorderLayout.CENTER);
    

    
    btnStart.addActionListener(new ActionListener() {
    
        public void actionPerformed(ActionEvent arg0) {
    
            startStreamService();
    
            keepAlive();
    
            startStreaming();
    

    
            btnStart.setEnabled(false);
    
            btnStop.setEnabled(true);
    
            btnRec.setEnabled(true);
    
            btnStopRec.setEnabled(false);
    
            //              btnZoomIn.setEnabled(true);
    
            //              btnZoomOut.setEnabled(true);
    
            //              btnZoomIn1.setEnabled(true);
    
            //              btnZoomOut1.setEnabled(true);
    
            //              btnZoomIn2.setEnabled(true);
    
            //              btnZoomOut2.setEnabled(true);
    
            //              btnZoomIn3.setEnabled(true);
    
            //              btnZoomOut3.setEnabled(true);
    
        }
    
    });
    

    
    btnStop.addActionListener(new ActionListener() {
    
        public void actionPerformed(ActionEvent arg0) {
    
            stopStreaming();
    
            stopKeepalive();
    

    
            btnStart.setEnabled(true);
    
            btnStop.setEnabled(false);
    
            btnRec.setEnabled(false);
    
            btnStopRec.setEnabled(false);
    
        }
    
    });
    

    
    btnRec.addActionListener(new ActionListener() {
    
        public void actionPerformed(ActionEvent arg0) {
    
            startRec();
    

    
            btnStart.setEnabled(false);
    
            btnStop.setEnabled(false);
    
            btnRec.setEnabled(false);
    
            btnStopRec.setEnabled(true);
    
        }
    
    });
    

    
    btnStopRec.addActionListener(new ActionListener() {
    
        public void actionPerformed(ActionEvent arg0) {
    
            stopRec();
    

    
            btnStart.setEnabled(false);
    
            btnStop.setEnabled(true);
    
            btnRec.setEnabled(true);
    
            btnStopRec.setEnabled(false);
    
        }
    
    });
    
}
    

    
private void startStreamService() {
    
    HttpURLConnection localConnection = null;
    
    try {
    
        String str = "http://" + CAMERA_IP + "/gp/gpExec?p1=gpStreamA9&c1=restart";
    
        localConnection = (HttpURLConnection) new URL(str).openConnection();
    
        localConnection.addRequestProperty("Cache-Control", "no-cache");
    
        localConnection.setConnectTimeout(5000);
    
        localConnection.setReadTimeout(5000);
    
        int i = localConnection.getResponseCode();
    
        if (i >= 400) {
    
            throw new IOException("sendGET HTTP error " + i);
    
        }
    
    }
    
    catch (Exception e) {
    

    
    }
    
    if (localConnection != null) {
    
        localConnection.disconnect();
    
    }
    
}
    

    
@SuppressWarnings("static-access")
    
private void sendUdpCommand(int paramInt) throws SocketException, IOException {
    
    Locale localLocale = Locale.US;
    
    Object[] arrayOfObject = new Object[4];
    
    arrayOfObject[0] = Integer.valueOf(0);
    
    arrayOfObject[1] = Integer.valueOf(0);
    
    arrayOfObject[2] = Integer.valueOf(paramInt);
    
    arrayOfObject[3] = Double.valueOf(0.0D);
    
    byte[] arrayOfByte = String.format(localLocale, "_GPHD_:%d:%d:%d:%1f\n", arrayOfObject).getBytes();
    
    String str = CAMERA_IP;
    
    int i = PORT;
    
    DatagramPacket localDatagramPacket = new DatagramPacket(arrayOfByte, arrayOfByte.length, new InetSocketAddress(str, i));
    
    this.mOutgoingUdpSocket.send(localDatagramPacket);
    
}
    

    
private void startStreaming() {
    
    Thread threadStream = new Thread() {
    
        @Override
    
        public void run() {
    
            try {
    
                streamingProcess = Runtime.getRuntime().exec("ffmpeg-20150318-git-0f16dfd-win64-static\\bin\\ffplay -i http://10.5.5.9:8080/live/amba.m3u8");
    
                InputStream errorStream = streamingProcess.getErrorStream();
    
                byte[] data = new byte[1024];
    
                int length = 0;
    
                while ((length = errorStream.read(data, 0, data.length)) > 0) {
    
                    System.out.println(new String(data, 0, length));
    
                    System.out.println(System.currentTimeMillis());
    
                }
    

    
            } catch (IOException e) {
    

    
            }
    
        }
    
    };
    
    threadStream.start();
    
}
    

    
private void startRec() {
    
    Thread threadRec = new Thread() {
    
        @Override
    
        public void run() {
    
            try {
    
                writeVideoProcess = Runtime.getRuntime().exec("ffmpeg-20150318-git-0f16dfd-win64-static\\bin\\ffmpeg -re -i http://10.5.5.9:8080/live/amba.m3u8 -c copy -an Video_GoPro_" + Math.random() + ".avi");
    
                InputStream errorRec = writeVideoProcess.getErrorStream();
    
                byte[] dataRec = new byte[1024];
    
                int lengthRec = 0;
    
                while ((lengthRec = errorRec.read(dataRec, 0, dataRec.length)) > 0) {
    
                    System.out.println(new String(dataRec, 0, lengthRec));
    
                    System.out.println(System.currentTimeMillis());
    
                }
    
            } catch (IOException e) {
    

    
            }
    
        }
    
    };
    
    threadRec.start();
    
}
    

    
private void keepAlive() {
    
    mKeepAliveThread = new KeepAliveThread();
    
    mKeepAliveThread.start();
    
}
    

    
class KeepAliveThread extends Thread {
    
    public void run() {
    
        try {
    
            Thread.currentThread().setName("gopro");
    
            if (mOutgoingUdpSocket == null) {
    
                mOutgoingUdpSocket = new DatagramSocket();
    
            }
    
            while ((!Thread.currentThread().isInterrupted()) && (mOutgoingUdpSocket != null)) {
    
                sendUdpCommand(2);
    
                Thread.sleep(2500L);
    
            }
    
        }
    
        catch (SocketException e) {
    

    
        }
    
        catch (InterruptedException e) {
    

    
        }
    
        catch (Exception e) {
    

    
        }
    
    }
    
}
    

    
private void stopStreaming() {
    
    if (streamingProcess != null) {
    
        streamingProcess.destroy();
    
        streamingProcess = null;
    
    }
    
    stopKeepalive();
    
    mOutgoingUdpSocket.disconnect();
    
    mOutgoingUdpSocket.close();
    
}
    

    
private void stopRec() {
    
    writeVideoProcess.destroy();
    
    writeVideoProcess = null;
    
}
    

    
private void stopKeepalive() {
    
    if (mKeepAliveThread != null) {
    
        mKeepAliveThread.interrupt();
    
        try {
    
            mKeepAliveThread.join(10L);
    
            mKeepAliveThread = null;
    
        }
    
        catch (InterruptedException e) {
    
            Thread.currentThread().interrupt();
    
        }
    
    }
    
}
    

    
public static void main(String[] args) {
    
    GoProStreamer streamer = new GoProStreamer();
    
    streamer.setVisible(true);
    
    streamer.setTitle("Pannello di controllo");
    
}

    }

  • Muxing Android MediaCodec encoded H264 packets into RTMP

    31 décembre 2015, par Vadym

    I am coming from a thread Encoding H.264 from camera with Android MediaCodec. My setup is very similar. However, I attempt to write mux the encoded frames and with javacv and broadcast them via rtmp.

    RtmpClient.java

    ...
    
private volatile BlockingQueue mFrameQueue = new LinkedBlockingQueue(MAXIMUM_VIDEO_FRAME_BACKLOG);
    
...
    
private void startStream() throws FrameRecorder.Exception, IOException {
    
    if (TextUtils.isEmpty(mDestination)) {
    
        throw new IllegalStateException("Cannot start RtmpClient without destination");
    
    }
    

    
    if (mCamera == null) {
    
        throw new IllegalStateException("Cannot start RtmpClient without camera.");
    
    }
    

    
    Camera.Parameters cameraParams = mCamera.getParameters();
    

    
    mRecorder = new FFmpegFrameRecorder(
    
            mDestination,
    
            mVideoQuality.resX,
    
            mVideoQuality.resY,
    
            (mAudioQuality.channelType.equals(AudioQuality.CHANNEL_TYPE_STEREO) ? 2 : 1));
    

    
    mRecorder.setFormat("flv");
    

    
    mRecorder.setFrameRate(mVideoQuality.frameRate);
    
    mRecorder.setVideoBitrate(mVideoQuality.bitRate);
    
    mRecorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);
    

    
    mRecorder.setSampleRate(mAudioQuality.samplingRate);
    
    mRecorder.setAudioBitrate(mAudioQuality.bitRate);
    
    mRecorder.setAudioCodec(avcodec.AV_CODEC_ID_AAC);
    

    
    mVideoStream = new VideoStream(mRecorder, mVideoQuality, mFrameQueue, mCamera);
    
    mAudioStream = new AudioStream(mRecorder, mAudioQuality);
    

    
    mRecorder.start();
    

    
    // Setup a bufferred preview callback
    
    setupCameraCallback(mCamera, mRtmpClient, DEFAULT_PREVIEW_CALLBACK_BUFFERS,
    
            mVideoQuality.resX * mVideoQuality.resY * ImageFormat.getBitsPerPixel(
    
                    cameraParams.getPreviewFormat())/8);
    

    
    try {
    
        mVideoStream.start();
    
        mAudioStream.start();
    
    }
    
    catch(Exception e) {
    
        e.printStackTrace();
    
        stopStream();
    
    }
    
}
    
...
    
@Override
    
public void onPreviewFrame(byte[] data, Camera camera) {
    
    boolean frameQueued = false;
    

    
    if (mRecorder == null || data == null) {
    
        return;
    
    }
    

    
    frameQueued = mFrameQueue.offer(data);
    

    
    // return the buffer to be reused - done in videostream
    
    //camera.addCallbackBuffer(data);
    
}
    
...

    VideoStream.java

    ...
    
@Override
    
public void run() {
    
    try {
    
        mMediaCodec = MediaCodec.createEncoderByType("video/avc");
    
        MediaFormat mediaFormat = MediaFormat.createVideoFormat("video/avc", mVideoQuality.resX, mVideoQuality.resY);
    
        mediaFormat.setInteger(MediaFormat.KEY_BIT_RATE, mVideoQuality.bitRate);
    
        mediaFormat.setInteger(MediaFormat.KEY_FRAME_RATE, mVideoQuality.frameRate);
    
        mediaFormat.setInteger(MediaFormat.KEY_COLOR_FORMAT, MediaCodecInfo.CodecCapabilities.COLOR_FormatYUV420SemiPlanar);
    
        mediaFormat.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, 1);
    
        mMediaCodec.configure(mediaFormat, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
    
        mMediaCodec.start();
    
    }
    
    catch(IOException e) {
    
        e.printStackTrace();
    
    }
    

    
    long startTimestamp = System.currentTimeMillis();
    
    long frameTimestamp = 0;
    
    byte[] rawFrame = null;
    

    
    try {
    
        while (!Thread.interrupted()) {
    
            rawFrame = mFrameQueue.take();
    

    
            frameTimestamp = 1000 * (System.currentTimeMillis() - startTimestamp);
    

    
            encodeFrame(rawFrame, frameTimestamp);
    

    
            // return the buffer to be reused
    
            mCamera.addCallbackBuffer(rawFrame);
    
        }
    
    }
    
    catch (InterruptedException ignore) {
    
        // ignore interrup while waiting
    
    }
    

    
    // Clean up video stream allocations
    
    try {
    
        mMediaCodec.stop();
    
        mMediaCodec.release();
    
        mOutputStream.flush();
    
        mOutputStream.close();
    
    } catch (Exception e){
    
        e.printStackTrace();
    
    }
    
}
    
...
    
private void encodeFrame(byte[] input, long timestamp) {
    
    try {
    
        ByteBuffer[] inputBuffers = mMediaCodec.getInputBuffers();
    
        ByteBuffer[] outputBuffers = mMediaCodec.getOutputBuffers();
    

    
        int inputBufferIndex = mMediaCodec.dequeueInputBuffer(0);
    

    
        if (inputBufferIndex >= 0) {
    
            ByteBuffer inputBuffer = inputBuffers[inputBufferIndex];
    
            inputBuffer.clear();
    
            inputBuffer.put(input);
    
            mMediaCodec.queueInputBuffer(inputBufferIndex, 0, input.length, timestamp, 0);
    
        }
    

    
        MediaCodec.BufferInfo bufferInfo = new MediaCodec.BufferInfo();
    

    
        int outputBufferIndex = mMediaCodec.dequeueOutputBuffer(bufferInfo, 0);
    

    
        if (outputBufferIndex >= 0) {
    
            while (outputBufferIndex >= 0) {
    
                ByteBuffer outputBuffer = outputBuffers[outputBufferIndex];
    

    
                // Should this be a direct byte buffer?
    
                byte[] outData = new byte[bufferInfo.size - bufferInfo.offset];
    
                outputBuffer.get(outData);
    

    
                mFrameRecorder.record(outData, bufferInfo.offset, outData.length, timestamp);
    

    
                mMediaCodec.releaseOutputBuffer(outputBufferIndex, false);
    
                outputBufferIndex = mMediaCodec.dequeueOutputBuffer(bufferInfo, 0);
    
            }
    
        }
    
        else if (outputBufferIndex == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) {
    
            outputBuffers = mMediaCodec.getOutputBuffers();
    
        } else if (outputBufferIndex == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
    
            // ignore for now
    
        }
    
    } catch (Throwable t) {
    
        t.printStackTrace();
    
    }
    

    
}
    
...

    FFmpegFrameRecorder.java

    ...
    
// Hackish codec copy frame recording function
    
public boolean record(byte[] encodedData, int offset, int length, long frameCount) throws Exception {
    
    int ret;
    

    
    if (encodedData == null) {
    
        return false;
    
    }
    

    
    av_init_packet(video_pkt);
    

    
    // this is why i wondered whether I should get outputbuffer data into direct byte buffer
    
    video_outbuf.put(encodedData, 0, encodedData.length);
    

    
    video_pkt.data(video_outbuf);
    
    video_pkt.size(video_outbuf_size);
    

    
    video_pkt.pts(frameCount);
    
    video_pkt.dts(frameCount);
    

    
    video_pkt.stream_index(video_st.index());
    

    
    synchronized (oc) {
    
        /* write the compressed frame in the media file */
    
        if (interleaved && audio_st != null) {
    
            if ((ret = av_interleaved_write_frame(oc, video_pkt)) < 0) {
    
                throw new Exception("av_interleaved_write_frame() error " + ret + " while writing interleaved video frame.");
    
            }
    
        } else {
    
            if ((ret = av_write_frame(oc, video_pkt)) < 0) {
    
                throw new Exception("av_write_frame() error " + ret + " while writing video frame.");
    
            }
    
        }
    
    }
    
    return (video_pkt.flags() & AV_PKT_FLAG_KEY) == 1;
    
}
    
...

    When I try to stream the video and run ffprobe on it, I get the following output :

    ffprobe version 2.5.3 Copyright (c) 2007-2015 the FFmpeg developers
    
  built on Jan 19 2015 12:56:57 with gcc 4.1.2 (GCC) 20080704 (Red Hat 4.1.2-55)
    
  configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic' --enable-bzlib --disable-crystalhd --enable-libass --enable-libdc1394 --enable-libfaac --enable-nonfree --disable-indev=jack --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-openal --enable-libopencv --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab --enable-avfilter --enable-avresample --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --enable-libcaca --shlibdir=/usr/lib64 --enable-runtime-cpudetect
    
  libavutil      54. 15.100 / 54. 15.100
    
  libavcodec     56. 13.100 / 56. 13.100
    
  libavformat    56. 15.102 / 56. 15.102
    
  libavdevice    56.  3.100 / 56.  3.100
    
  libavfilter     5.  2.103 /  5.  2.103
    
  libavresample   2.  1.  0 /  2.  1.  0
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  1.100 /  1.  1.100
    
  libpostproc    53.  3.100 / 53.  3.100
    
Metadata:
    
  Server                NGINX RTMP (github.com/arut/nginx-rtmp-module)
    
  width                 320.00
    
  height                240.00
    
  displayWidth          320.00
    
  displayHeight         240.00
    
  duration              0.00
    
  framerate             0.00
    
  fps                   0.00
    
  videodatarate         261.00
    
  videocodecid          7.00
    
  audiodatarate         62.00
    
  audiocodecid          10.00
    
  profile
    
  level
    
[live_flv @ 0x1edb0820] Could not find codec parameters for stream 0 (Video: none, none, 267 kb/s): unknown codec
    
Consider increasing the value for the 'analyzeduration' and 'probesize' options
    
Input #0, live_flv, from 'rtmp://<server>/input/<stream>':
    
  Metadata:
    
    Server          : NGINX RTMP (github.com/arut/nginx-rtmp-module)
    
    displayWidth    : 320
    
    displayHeight   : 240
    
    fps             : 0
    
    profile         :
    
    level           :
    
  Duration: 00:00:00.00, start: 16.768000, bitrate: N/A
    
    Stream #0:0: Video: none, none, 267 kb/s, 1k tbr, 1k tbn, 1k tbc
    
    Stream #0:1: Audio: aac (LC), 16000 Hz, mono, fltp, 63 kb/s
    
Unsupported codec with id 0 for input stream 0
    
</stream></server>

    I am not, by any means, an expert in H264 or video encoding. I know that the encoded frames that come out from MediaCodec contain SPS NAL, PPS NAL, and frame NAL units. I’ve also written the MediaCodec output into a file and was able to play it back (I did have to specify the format and framerate as otherwise it would play too fast).

    My assumption is that things should work (see how little I know :)). Knowing that SPS and PPS are written out, decoder should know enough. Yet, ffprobe fails to recognize codec, fps, and other video information. Do I need to pass packet flag information to FFmpegFrameRecorder.java:record() function ? Or should I use direct buffer ? Any suggestion will be appreciated ! I should figure things out with a hint.

    PS : I know that some codecs use Planar and other SemiPlanar color formats. That distinction will come later if I get past this. Also, I didn’t go the Surface to MediaCodec way because I need to support API 17 and it requires more changes than this route, which I think helps me understand the more basic flow. Agan, I appreciate any suggestions. Please let me know if something needs to be clarified.

    Update #1

    So having done more testing, I see that my encoder outputs the following frames :

    000000016742800DDA0507E806D0A1350000000168CE06E2
    
0000000165B840A6F1E7F0EA24000AE73BEB5F51CC7000233A84240...
    
0000000141E2031364E387FD4F9BB3D67F51CC7000279B9F9CFE811...
    
0000000141E40304423FFFFF0B7867F89FAFFFFFFFFFFCBE8EF25E6...
    
0000000141E602899A3512EF8AEAD1379F0650CC3F905131504F839...
    
...

    The very first frame contains SPS and PPS. From what I was able to see, these are transmitted only once. The rest are NAL types 1 and 5. So, my assumption is that, for ffprobe to see stream info not only when the stream starts, I should capture SPS and PPS frames and re-transmit them myself periodically, after a certain number of frames, or perhaps before every I-frame. What do you think ?

    Update #2

    Unable to validate that I’m writing frames successfully. After having tried to read back the written packet, I cannot validate written bytes. As strange, on successful write of IPL image and streaming, I also cannot print out bytes of encoded packet after avcodec_encode_video2. Hit the official dead end.

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