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Tap to record like in vine using javacv
8 décembre 2015, par human123I am trying to implement a tap to record feature like in vine. A sample for handling recording (not touch to record) provided in javacv is https://github.com/bytedeco/javacv/blob/master/samples/RecordActivity.java. I am trying to modify it so that in onPreviewFrame method frames are added to buffer only when user has his finger placed on screen. These frames are then tried to be combined into final video in stopRecording method.
The issue is that if I set the timestamp as given in below code snippet (in stopRecording method)
if (t > recorder.getTimestamp())
{
recorder.setTimestamp(t);
}the behavior is as below
Case 1
If I tap on screen to record for 2 seconds and take the finger away from screen for 3 seconds and then again place finger back on screen to record for another 4 seconds the resulting video is like,
For 1st 2 seconds video has recorded content. For next 3 seconds (time when finger is put away from screen). video just shows the last frame recorded when finger was placed on screen last. Then the video has recorded video content for next 4 seconds. So there seems to be an issue in handling video recording when finger is removed from screen.
Case 2
Next I removed the code setting time stamp to recorder(the code snippet given above) in stopRecording method.
Now the resulting video (for the same steps tried in case 1) does not contain the middle 3 seconds(which is what is required) when finger was taken away from screen. But video is playing at a faster rate. So it seems that we need to set time stamp so that video plays at normal rate.
Full code of my activity is given below. (Please note that video recording is mainly handled from onPreviewFrame and stopRecording methods)
public class TouchToRecordActivity extends Activity implements OnClickListener, View.OnTouchListener {
private final static String CLASS_LABEL = "TouchToRecordActivity";
private final static String LOG_TAG = CLASS_LABEL;
private String ffmpeg_link = "/mnt/sdcard/stream.mp4";
long startTime = 0;
boolean recording = false;
boolean rec = false;
private FFmpegFrameRecorder recorder;
private boolean isPreviewOn = false;
private int sampleAudioRateInHz = 44100;
private int imageWidth = 640;
private int imageHeight = 480;
private int destWidth = 480;
private int frameRate = 30;
/* audio data getting thread */
private AudioRecord audioRecord;
private AudioRecordRunnable audioRecordRunnable;
private Thread audioThread;
volatile boolean runAudioThread = true;
/* video data getting thread */
private Camera cameraDevice;
private CameraView cameraView;
private Frame yuvImage = null;
/* layout setting */
private final int bg_screen_bx = 232;
private final int bg_screen_by = 128;
private final int bg_screen_width = 700;
private final int bg_screen_height = 500;
private final int bg_width = 1123;
private final int bg_height = 715;
private final int live_width = 640;
private final int live_height = 480;
private int screenWidth, screenHeight;
private Button btnRecorderControl;
/* The number of seconds in the continuous record loop (or 0 to disable loop). */
final int RECORD_LENGTH = 20;
Frame[] images;
long[] timestamps;
ShortBuffer[] samples;
int imagesIndex, samplesIndex;
long firstTime = 0;
long startPauseTime = 0;
long totalPauseTime = 0;
long pausedTime = 0;
long stopPauseTime = 0;
long totalTime = 0;
long totalRecordedTS = 0;
private TextView txtTimer;
private Handler mHandler = new Handler();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
setContentView(R.layout.touch_main);
initLayout();
}
@Override
protected void onDestroy() {
super.onDestroy();
recording = false;
if (cameraView != null) {
cameraView.stopPreview();
}
if (cameraDevice != null) {
cameraDevice.stopPreview();
cameraDevice.release();
cameraDevice = null;
}
}
private void initLayout() {
/* get size of screen */
Display display = ((WindowManager) getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
screenWidth = display.getWidth();
screenHeight = display.getHeight();
RelativeLayout.LayoutParams layoutParam = null;
LayoutInflater myInflate = null;
myInflate = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
RelativeLayout topLayout = new RelativeLayout(this);
setContentView(topLayout);
LinearLayout preViewLayout = (LinearLayout) myInflate.inflate(R.layout.touch_main, null);
layoutParam = new RelativeLayout.LayoutParams(screenWidth, screenHeight);
topLayout.addView(preViewLayout, layoutParam);
txtTimer = (TextView) preViewLayout.findViewById(R.id.txtTimer);
/* add control button: start and stop */
btnRecorderControl = (Button) findViewById(R.id.recorder_control);
btnRecorderControl.setText("Start");
btnRecorderControl.setOnClickListener(this);
/* add camera view */
int display_width_d = (int) (1.0 * bg_screen_width * screenWidth / bg_width);
int display_height_d = (int) (1.0 * bg_screen_height * screenHeight / bg_height);
int prev_rw, prev_rh;
if (1.0 * display_width_d / display_height_d > 1.0 * live_width / live_height) {
prev_rh = display_height_d;
prev_rw = (int) (1.0 * display_height_d * live_width / live_height);
} else {
prev_rw = display_width_d;
prev_rh = (int) (1.0 * display_width_d * live_height / live_width);
}
layoutParam = new RelativeLayout.LayoutParams(prev_rw, prev_rh);
layoutParam.topMargin = (int) (1.0 * bg_screen_by * screenHeight / bg_height);
layoutParam.leftMargin = (int) (1.0 * bg_screen_bx * screenWidth / bg_width);
cameraDevice = Camera.open();
Log.i(LOG_TAG, "cameara open");
cameraView = new CameraView(this, cameraDevice);
topLayout.addView(cameraView, layoutParam);
topLayout.setOnTouchListener(this);
Log.i(LOG_TAG, "cameara preview start: OK");
}
//---------------------------------------
// initialize ffmpeg_recorder
//---------------------------------------
private void initRecorder() {
Log.w(LOG_TAG, "init recorder");
if (RECORD_LENGTH > 0) {
imagesIndex = 0;
images = new Frame[RECORD_LENGTH * frameRate];
timestamps = new long[images.length];
for (int i = 0; i < images.length; i++) {
images[i] = new Frame(destWidth, imageHeight, Frame.DEPTH_UBYTE, 2);
timestamps[i] = -1;
}
} else if (yuvImage == null) {
yuvImage = new Frame(destWidth, imageHeight, Frame.DEPTH_UBYTE, 2);
Log.i(LOG_TAG, "create yuvImage");
}
Log.i(LOG_TAG, "ffmpeg_url: " + ffmpeg_link);
recorder = new FFmpegFrameRecorder(ffmpeg_link, destWidth, imageHeight, 1);
recorder.setFormat("mp4");
recorder.setVideoCodecName("libx264");
recorder.setSampleRate(sampleAudioRateInHz);
// Set in the surface changed method
recorder.setFrameRate(frameRate);
Log.i(LOG_TAG, "recorder initialize success");
audioRecordRunnable = new AudioRecordRunnable();
audioThread = new Thread(audioRecordRunnable);
runAudioThread = true;
}
public void startRecording() {
initRecorder();
mHandler.removeCallbacks(mUpdateTimeTask);
mHandler.postDelayed(mUpdateTimeTask, 100);
try {
recorder.start();
startTime = System.currentTimeMillis();
recording = true;
audioThread.start();
} catch (FFmpegFrameRecorder.Exception e) {
e.printStackTrace();
}
}
public void stopRecording() {
runAudioThread = false;
try {
audioThread.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
audioRecordRunnable = null;
audioThread = null;
if (recorder != null && recording) {
if (RECORD_LENGTH > 0) {
Log.v(LOG_TAG, "Writing frames");
try {
int firstIndex = imagesIndex % samples.length;
int lastIndex = (imagesIndex - 1) % images.length;
if (imagesIndex <= images.length) {
firstIndex = 0;
lastIndex = imagesIndex - 1;
}
if ((startTime = timestamps[lastIndex] - RECORD_LENGTH * 1000000L) < 0) {
startTime = 0;
}
if (lastIndex < firstIndex) {
lastIndex += images.length;
}
int videoCounter = 0;
for (int i = firstIndex; i <= lastIndex; i++) {
if (timestamps[i] == -1) {
Log.v(LOG_TAG, "frame not recorded");
}
if (timestamps[i] != -1) {
long t = timestamps[i % timestamps.length] - startTime;
if (t >= 0) {
videoCounter++;
/*if (((i % images.length) != 0) && images[i % images.length] != images[(i % images.length) - 1]) {
if (t > recorder.getTimestamp()) {
recorder.setTimestamp(t);
}*/
Log.v(LOG_TAG, "imageIndex=" + (i % images.length));
recorder.record(images[i % images.length]);
/* }*/
Log.v(LOG_TAG, "videoCounter=" + videoCounter);
}
}
}
firstIndex = samplesIndex % samples.length;
lastIndex = (samplesIndex - 1) % samples.length;
if (samplesIndex <= samples.length) {
firstIndex = 0;
lastIndex = samplesIndex - 1;
}
if (lastIndex < firstIndex) {
lastIndex += samples.length;
}
for (int i = firstIndex; i <= lastIndex; i++) {
if (timestamps[i] != -1) {
recorder.recordSamples(samples[i % samples.length]);
}
}
} catch (FFmpegFrameRecorder.Exception e) {
Log.v(LOG_TAG, e.getMessage());
e.printStackTrace();
}
}
recording = false;
Log.v(LOG_TAG, "Finishing recording, calling stop and release on recorder");
try {
recorder.stop();
recorder.release();
} catch (FFmpegFrameRecorder.Exception e) {
e.printStackTrace();
}
recorder = null;
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (recording) {
stopRecording();
}
finish();
return true;
}
return super.onKeyDown(keyCode, event);
}
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
switch (motionEvent.getAction()) {
case MotionEvent.ACTION_DOWN:
Log.v(LOG_TAG, "ACTION_DOWN" + recording);
if (!recording) {
startRecording();
} else {
stopPauseTime = System.currentTimeMillis();
totalPauseTime = stopPauseTime - startPauseTime - ((long) (1.0 / (double) frameRate) * 1000);
pausedTime += totalPauseTime;
}
rec = true;
setTotalVideoTime();
btnRecorderControl.setText(getResources().getString(R.string.stop));
break;
case MotionEvent.ACTION_MOVE:
rec = true;
setTotalVideoTime();
break;
case MotionEvent.ACTION_UP:
Log.v(LOG_TAG, "ACTION_UP");
rec = false;
startPauseTime = System.currentTimeMillis();
break;
}
return true;
}
private Runnable mUpdateTimeTask = new Runnable() {
public void run() {
if (recording) {
setTotalVideoTime();
}
mHandler.postDelayed(this, 500);
}
};
private synchronized void setTotalVideoTime() {
totalTime = System.currentTimeMillis() - firstTime - pausedTime - ((long) (1.0 / (double) frameRate) * 1000);
if (totalTime > 0)
txtTimer.setText(getRecordingTimeFromMillis(totalTime));
}
private String getRecordingTimeFromMillis(long millis) {
String strRecordingTime = null;
int seconds = (int) (millis / 1000);
int minutes = seconds / 60;
int hours = minutes / 60;
if (hours >= 0 && hours < 10)
strRecordingTime = "0" + hours + ":";
else
strRecordingTime = hours + ":";
if (hours > 0)
minutes = minutes % 60;
if (minutes >= 0 && minutes < 10)
strRecordingTime += "0" + minutes + ":";
else
strRecordingTime += minutes + ":";
seconds = seconds % 60;
if (seconds >= 0 && seconds < 10)
strRecordingTime += "0" + seconds;
else
strRecordingTime += seconds;
return strRecordingTime;
}
//---------------------------------------------
// audio thread, gets and encodes audio data
//---------------------------------------------
class AudioRecordRunnable implements Runnable {
@Override
public void run() {
android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_URGENT_AUDIO);
// Audio
int bufferSize;
ShortBuffer audioData;
int bufferReadResult;
bufferSize = AudioRecord.getMinBufferSize(sampleAudioRateInHz,
AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT);
audioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleAudioRateInHz,
AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT, bufferSize);
if (RECORD_LENGTH > 0) {
samplesIndex = 0;
samples = new ShortBuffer[RECORD_LENGTH * sampleAudioRateInHz * 2 / bufferSize + 1];
for (int i = 0; i < samples.length; i++) {
samples[i] = ShortBuffer.allocate(bufferSize);
}
} else {
audioData = ShortBuffer.allocate(bufferSize);
}
Log.d(LOG_TAG, "audioRecord.startRecording()");
audioRecord.startRecording();
/* ffmpeg_audio encoding loop */
while (runAudioThread) {
if (RECORD_LENGTH > 0) {
audioData = samples[samplesIndex++ % samples.length];
audioData.position(0).limit(0);
}
//Log.v(LOG_TAG,"recording? " + recording);
bufferReadResult = audioRecord.read(audioData.array(), 0, audioData.capacity());
audioData.limit(bufferReadResult);
if (bufferReadResult > 0) {
Log.v(LOG_TAG, "bufferReadResult: " + bufferReadResult);
// If "recording" isn't true when start this thread, it never get's set according to this if statement...!!!
// Why? Good question...
if (recording && rec) {
Log.v(LOG_TAG, "Recording audio");
if (RECORD_LENGTH <= 0) try {
recorder.recordSamples(audioData);
//Log.v(LOG_TAG,"recording " + 1024*i + " to " + 1024*i+1024);
} catch (FFmpegFrameRecorder.Exception e) {
Log.v(LOG_TAG, e.getMessage());
e.printStackTrace();
}
}
}
}
Log.v(LOG_TAG, "AudioThread Finished, release audioRecord");
/* encoding finish, release recorder */
if (audioRecord != null) {
audioRecord.stop();
audioRecord.release();
audioRecord = null;
Log.v(LOG_TAG, "audioRecord released");
}
}
}
//---------------------------------------------
// camera thread, gets and encodes video data
//---------------------------------------------
class CameraView extends SurfaceView implements SurfaceHolder.Callback, PreviewCallback {
private SurfaceHolder mHolder;
private Camera mCamera;
public CameraView(Context context, Camera camera) {
super(context);
Log.w("camera", "camera view");
mCamera = camera;
mHolder = getHolder();
mHolder.addCallback(CameraView.this);
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
mCamera.setPreviewCallback(CameraView.this);
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
try {
stopPreview();
mCamera.setPreviewDisplay(holder);
} catch (IOException exception) {
mCamera.release();
mCamera = null;
}
}
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
stopPreview();
Camera.Parameters camParams = mCamera.getParameters();
List sizes = camParams.getSupportedPreviewSizes();
// Sort the list in ascending order
Collections.sort(sizes, new Comparator() {
public int compare(final Camera.Size a, final Camera.Size b) {
return a.width * a.height - b.width * b.height;
}
});
camParams.setPreviewSize(imageWidth, imageHeight);
Log.v(LOG_TAG, "Setting imageWidth: " + imageWidth + " imageHeight: " + imageHeight + " frameRate: " + frameRate);
camParams.setPreviewFrameRate(frameRate);
Log.v(LOG_TAG, "Preview Framerate: " + camParams.getPreviewFrameRate());
mCamera.setParameters(camParams);
List videoSizes = mCamera.getParameters().getSupportedVideoSizes();
// Set the holder (which might have changed) again
try {
mCamera.setPreviewDisplay(holder);
mCamera.setPreviewCallback(CameraView.this);
startPreview();
} catch (Exception e) {
Log.e(LOG_TAG, "Could not set preview display in surfaceChanged");
}
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
try {
mHolder.addCallback(null);
mCamera.setPreviewCallback(null);
} catch (RuntimeException e) {
// The camera has probably just been released, ignore.
}
}
public void startPreview() {
if (!isPreviewOn && mCamera != null) {
isPreviewOn = true;
mCamera.startPreview();
}
}
public void stopPreview() {
if (isPreviewOn && mCamera != null) {
isPreviewOn = false;
mCamera.stopPreview();
}
}
@Override
public void onPreviewFrame(byte[] data, Camera camera) {
if (audioRecord == null || audioRecord.getRecordingState() != AudioRecord.RECORDSTATE_RECORDING) {
startTime = System.currentTimeMillis();
return;
}
if (RECORD_LENGTH > 0) {
int i = imagesIndex++ % images.length;
Log.v(LOG_TAG, "recording:" + recording + "rec:" + rec);
if (recording && rec) {
yuvImage = images[i];
timestamps[i] = 1000 * (System.currentTimeMillis() - startTime);
totalRecordedTS++;
} else {
Log.v(LOG_TAG, "recording is paused");
yuvImage = null;
timestamps[i] = -1;
}
}
/* get video data */
if (yuvImage != null && recording && rec) {
if (data.length != imageWidth * imageHeight) {
Camera.Size sz = camera.getParameters().getPreviewSize();
imageWidth = sz.width;
imageHeight = sz.height;
destWidth = imageHeight;
Log.v(LOG_TAG, "data length:" + data.length);
}
ByteBuffer bb = (ByteBuffer) yuvImage.image[0].position(0); // resets the buffer
int start = 2 * ((imageWidth - destWidth) / 4); // this must be even
for (int row = 0; row < imageHeight * 3 / 2; row++) {
bb.put(data, start, destWidth);
start += imageWidth;
}
}
}
}
@Override
public void onClick(View v) {
if (!recording) {
startRecording();
Log.w(LOG_TAG, "Start Button Pushed");
btnRecorderControl.setText("Stop");
} else {
// This will trigger the audio recording loop to stop and then set isRecorderStart = false;
stopRecording();
Log.w(LOG_TAG, "Stop Button Pushed");
btnRecorderControl.setText("Start");
}
}}Changes made as per Alex Cohn’s suggestions
Suggestion 1 - Estimate average frame rate
public void stopRecording() {
..............................
if (((i % images.length) != 0) && images[i % images.length] != images[(i % images.length) - 1]) {
if (t > recorder.getTimestamp()) {
t += 1000000 / frameRate;
recorder.setTimestamp(t);
}
recorder.record(images[i % images.length]);
}
..........................................
}Change made was adding t += 1000000 / frameRate ; But this caused the video to freeze (as in case 1 described above) in portions when finger was placed away from screen.
Suggestion 2 - Modification in onPreviewFrame()
long[] timestampsForRecorder;
private void initRecorder() {
Log.w(LOG_TAG, "init recorder");
if (RECORD_LENGTH > 0) {
.......................................................
timestampsForRecorder = new long[images.length];
for (int i = 0; i < images.length; i++) {
images[i] = new Frame(destWidth, imageHeight, Frame.DEPTH_UBYTE, 2);
timestamps[i] = -1;
timestampsForRecorder[i] = -1;
}
} else if (yuvImage == null) {
yuvImage = new Frame(destWidth, imageHeight, Frame.DEPTH_UBYTE, 2);
Log.i(LOG_TAG, "create yuvImage");
}
...................................................
}
@Override
public void onPreviewFrame(byte[] data, Camera camera) {
if (audioRecord == null || audioRecord.getRecordingState() != AudioRecord.RECORDSTATE_RECORDING) {
startTime = SystemClock.elapsedRealtime();
return;
}
if (RECORD_LENGTH > 0) {
int i = imagesIndex++ % images.length;
Log.v(LOG_TAG, "recording:" + recording + "rec:" + rec);
if (recording && rec) {
yuvImage = images[i];
long thisFrameTime = SystemClock.elapsedRealtime();
timestamps[i] = thisFrameTime;
long lastFrameTime = timestamps[(int) (imagesIndex == 0 ? startTime : ((imagesIndex-1) % images.length))];
Log.v(LOG_TAG, "lastFrameTime:" + lastFrameTime+",stopPauseTime:" + stopPauseTime);
if (lastFrameTime > stopPauseTime) {
timestampsForRecorder[i] = 1000 * (thisFrameTime - Math.max(stopPauseTime, lastFrameTime));
}
}
}
.....................................................
}
public void stopRecording() {
.......................................................
if (recorder != null && recording) {
if (RECORD_LENGTH > 0) {
Log.v(LOG_TAG, "Writing frames");
try {
int firstIndex = imagesIndex % samples.length;
int lastIndex = (imagesIndex - 1) % images.length;
if (imagesIndex <= images.length) {
firstIndex = 0;
lastIndex = imagesIndex - 1;
}
if ((startTime = timestampsForRecorder[lastIndex] - RECORD_LENGTH * 1000000L) < 0) {
startTime = 0;
}
if (lastIndex < firstIndex) {
lastIndex += images.length;
}
for (int i = firstIndex; i <= lastIndex; i++) {
if (timestampsForRecorder[i] != -1) {
long t = timestampsForRecorder[i % timestampsForRecorder.length] - startTime;
if (t >= 0) {
if (((i % images.length) != 0) && images[i % images.length] != images[(i % images.length) - 1]) {
if (t > recorder.getTimestamp()) {
recorder.setTimestamp(t);
}
Log.v(LOG_TAG, "imageIndex=" + (i % images.length));
recorder.record(images[i % images.length]);
}
}
}
}
.............................................
} catch (FFmpegFrameRecorder.Exception e) {
.................................
}
}
...........................................
}
}The video recorded using this was having the issue in case 2 mentioned above. ie,It was playing at a faster rate
-
Convert video by ffmpeg not working in chrome
18 novembre 2015, par DucthienI used command :
$ ffmpeg -y -i "E:\SharingVideo\src\main\webapp\resources\video\input\input.mp4" -an -c:a libfdk_aac -ac 2 -ab 128k -c:v libx264 -x264opts 'keyint=24:min-keyint=24:no-scenecut' -b:v 1500k -maxrate 1500k -bufsize 1000k -vf "scale=-1:720" "E:\SharingVideo\src\main\webapp\resources\video\input\input_an.mp4"to get only video with format h264 (without sound). Cmd result :
ffmpeg version N-76224-ga7c5005 Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 5.2.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
libavutil 55. 4.100 / 55. 4.100
libavcodec 57. 9.100 / 57. 9.100
libavformat 57. 10.101 / 57. 10.101
libavdevice 57. 0.100 / 57. 0.100
libavfilter 6. 12.100 / 6. 12.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.100 / 2. 0.100
libpostproc 54. 0.100 / 54. 0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'E:\SharingVideo\src\main\webapp\resources\video\input\input.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
creation_time : 1970-01-01 00:00:00
encoder : Lavf52.94.0
Duration: 00:02:29.95, start: 0.000000, bitrate: 1787 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 1629 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 151 kb/s (default)
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : SoundHandler
[libx264 @ 000000821f5fbe40] using SAR=1/1
[libx264 @ 000000821f5fbe40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 000000821f5fbe40] profile High, level 3.1
[libx264 @ 000000821f5fbe40] 264 - core 148 r2638 7599210 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=24 keyint_min=13 scenecut=0 intra_refresh=0 rc_lookahead=24 rc=cbr mbtree=1 bitrate=1500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=1500 vbv_bufsize=1000 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'E:\SharingVideo\src\main\webapp\resources\video\input\input_an.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.10.101
Stream #0:0(und): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 1500 kb/s, 29.97 fps, 30k tbn, 29.97 tbc (default)
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : VideoHandler
encoder : Lavc57.9.100 libx264
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Press [q] to stop, [?] for help
frame= 4494 fps= 38 q=-1.0 Lsize= 25050kB time=00:02:29.88 bitrate=1369.1kbits/s
video:25003kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.188374%
[libx264 @ 000000821f5fbe40] frame I:188 Avg QP:17.73 size: 40170
[libx264 @ 000000821f5fbe40] frame P:2060 Avg QP:23.64 size: 7302
[libx264 @ 000000821f5fbe40] frame B:2246 Avg QP:24.03 size: 1339
[libx264 @ 000000821f5fbe40] consecutive B-frames: 29.6% 8.4% 8.9% 53.1%
[libx264 @ 000000821f5fbe40] mb I I16..4: 27.8% 64.1% 8.1%
[libx264 @ 000000821f5fbe40] mb P I16..4: 5.4% 12.4% 0.3% P16..4: 26.4% 4.3% 2.0% 0.0% 0.0% skip:49.3%
[libx264 @ 000000821f5fbe40] mb B I16..4: 0.2% 0.4% 0.0% B16..8: 17.5% 0.7% 0.1% direct: 0.9% skip:80.2% L0:41.5% L1:55.9% BI: 2.7%
[libx264 @ 000000821f5fbe40] 8x8 transform intra:66.9% inter:89.7%
[libx264 @ 000000821f5fbe40] coded y,uvDC,uvAC intra: 39.1% 57.7% 20.9% inter: 4.7% 10.1% 0.3%
[libx264 @ 000000821f5fbe40] i16 v,h,dc,p: 43% 29% 8% 20%
[libx264 @ 000000821f5fbe40] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 23% 21% 4% 5% 5% 5% 5% 5%
[libx264 @ 000000821f5fbe40] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 26% 9% 4% 8% 7% 7% 5% 4%
[libx264 @ 000000821f5fbe40] i8c dc,h,v,p: 49% 24% 20% 7%
[libx264 @ 000000821f5fbe40] Weighted P-Frames: Y:9.1% UV:8.9%
[libx264 @ 000000821f5fbe40] ref P L0: 74.5% 11.1% 11.0% 3.3% 0.1%
[libx264 @ 000000821f5fbe40] ref B L0: 91.0% 7.9% 1.1%
[libx264 @ 000000821f5fbe40] ref B L1: 96.4% 3.6%
[libx264 @ 000000821f5fbe40] kb/s:1365.92then i get audio from mp4 file :
ffmpeg -i "E:\SharingVideo\src\main\webapp\resources\video\input\input.mp4" -vn -acodec copy "E:\SharingVideo\src\main\webapp\resources\video\input\audio.mp4"cmd result :
$ ffmpeg -i "E:\SharingVideo\src\main\webapp\resources\video\input\input.mp4" -vn -acodec copy "E:\SharingVideo\src\mai
n\webapp\resources\video\input\audio.mp4"
ffmpeg version N-76224-ga7c5005 Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 5.2.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
libavutil 55. 4.100 / 55. 4.100
libavcodec 57. 9.100 / 57. 9.100
libavformat 57. 10.101 / 57. 10.101
libavdevice 57. 0.100 / 57. 0.100
libavfilter 6. 12.100 / 6. 12.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.100 / 2. 0.100
libpostproc 54. 0.100 / 54. 0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'E:\SharingVideo\src\main\webapp\resources\video\input\input.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
creation_time : 1970-01-01 00:00:00
encoder : Lavf52.94.0
Duration: 00:02:29.95, start: 0.000000, bitrate: 1787 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 1629 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 151 kb/s (default)
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : SoundHandler
[mp4 @ 0000000b967e30a0] Codec for stream 0 does not use global headers but container format requires global headers
Output #0, mp4, to 'E:\SharingVideo\src\main\webapp\resources\video\input\audio.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.10.101
Stream #0:0(und): Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo, 151 kb/s (default)
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : SoundHandler
Stream mapping:
Stream #0:1 -> #0:0 (copy)
Press [q] to stop, [?] for help
size= 2806kB time=00:02:29.86 bitrate= 153.4kbits/s
video:0kB audio:2780kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.933710%after that. I create .mpd file by MP4box :
MP4Box -dash 10000 -profile onDemand -rap -out "E:\SharingVideo\src\main\webapp\resources\video\input\input_dash.mpd" "E:\SharingVideo\src\main\webapp\resources\video\input\input_an.mp4"#video:id=video_2Mb "E:\SharingVideo\src\main\webapp\resources\video\input\audio.mp4"#audio:id=audiothe video play fine in firefox and IE but in chrome it doesn’t working :
VIDEOJS: ERROR: (CODE:3 MEDIA_ERR_DECODE) The video playback was aborted due to a corruption problem or because the video used features your browser did not support.
Video Element Error: MEDIA_ERR_DECODE
VIDEOJS: ERROR: (CODE:4 MEDIA_ERR_SRC_NOT_SUPPORTED) The video could not be loaded, either because the server or network failed or because the format is not supported.
Video Element Error: MEDIA_ERR_SRC_NOT_SUPPORTEDI don’t know why it doesn’t work in chrome, please help me.What did I wrong something to display video in chrome ?
-
Issue in recording video
16 novembre 2015, par human123I am trying to record video in 480*480 resolution like in vine using javacv. As a starting point I used the sample provided in https://github.com/bytedeco/javacv/blob/master/samples/RecordActivity.java Video is getting recorded (but not in the desired resolution) and saved.
But the issue is that 480*480 resolution is not supported natively in android. So some pre processing needs to be done to get the video in desired resolution.
So once I was able to record video using code sample provided by javacv, next challenge was on how to pre process the video. On research it was found that efficient cropping is possible when final image width required is same as recorded image width. Such a solution was provided in the SO question,Recording video on Android using JavaCV (Updated 2014 02 17). I changed onPreviewFrame method as suggested in that answer.
@Override
public void onPreviewFrame(byte[] data, Camera camera) {
if (audioRecord == null || audioRecord.getRecordingState() != AudioRecord.RECORDSTATE_RECORDING) {
startTime = System.currentTimeMillis();
return;
}
if (RECORD_LENGTH > 0) {
int i = imagesIndex++ % images.length;
yuvImage = images[i];
timestamps[i] = 1000 * (System.currentTimeMillis() - startTime);
}
/* get video data */
imageWidth = 640;
imageHeight = 480
int finalImageHeight = 360;
if (yuvImage != null && recording) {
ByteBuffer bb = (ByteBuffer)yuvImage.image[0].position(0); // resets the buffer
final int startY = imageWidth*(imageHeight-finalImageHeight)/2;
final int lenY = imageWidth*finalImageHeight;
bb.put(data, startY, lenY);
final int startVU = imageWidth*imageHeight + imageWidth*(imageHeight-finalImageHeight)/4;
final int lenVU = imageWidth* finalImageHeight/2;
bb.put(data, startVU, lenVU);
try {
long t = 1000 * (System.currentTimeMillis() - startTime);
if (t > recorder.getTimestamp()) {
recorder.setTimestamp(t);
}
recorder.record(yuvImage);
} catch (FFmpegFrameRecorder.Exception e) {
Log.e(LOG_TAG, "problem with recorder():", e);
}
}
}
}Please also note that this solution was provided for an older version of javacv. The resulting video had a yellowish overlay covering 2/3rd part. Also there was empty section on left side as the video was not cropped correctly.
So my question is what is the most appropriate solution for cropping videos using latest version of javacv ?
Code after making change as suggested by Alex Cohn
@Override
public void onPreviewFrame(byte[] data, Camera camera) {
if (audioRecord == null || audioRecord.getRecordingState() != AudioRecord.RECORDSTATE_RECORDING) {
startTime = System.currentTimeMillis();
return;
}
if (RECORD_LENGTH > 0) {
int i = imagesIndex++ % images.length;
yuvImage = images[i];
timestamps[i] = 1000 * (System.currentTimeMillis() - startTime);
}
/* get video data */
imageWidth = 640;
imageHeight = 480;
destWidth = 480;
if (yuvImage != null && recording) {
ByteBuffer bb = (ByteBuffer)yuvImage.image[0].position(0); // resets the buffer
int start = 2*((imageWidth-destWidth)/4); // this must be even
for (int row=0; row2; row++) {
bb.put(data, start, destWidth);
start += imageWidth;
}
try {
long t = 1000 * (System.currentTimeMillis() - startTime);
if (t > recorder.getTimestamp()) {
recorder.setTimestamp(t);
}
recorder.record(yuvImage);
} catch (FFmpegFrameRecorder.Exception e) {
Log.e(LOG_TAG, "problem with recorder():", e);
}
}
}Screen shot from video generated with this code (destWidth 480) is
Next I tried capturing a video with destWidth speciified as 639. The result is
When destWidth is 639 video is repeating contents twice. When it is 480, contents are repeated 5 times and the green overlay and distortion is more.
Also When the destWidth = imageWidth, video is captured properly. ie, for 640*480 there is no repetition of video contents and no green overlay.
Converting frame to IplImage
When this question was asked first, I missed to mention that the record method in FFmpegFrameRecorder is now accepting object of type Frame whereas earlier it was IplImage object. So I tried to apply Alex Cohn’s solution by converting Frame to IplImage.
//---------------------------------------
// initialize ffmpeg_recorder
//---------------------------------------
private void initRecorder() {
Log.w(LOG_TAG,"init recorder");
imageWidth = 640;
imageHeight = 480;
if (RECORD_LENGTH > 0) {
imagesIndex = 0;
images = new Frame[RECORD_LENGTH * frameRate];
timestamps = new long[images.length];
for (int i = 0; i < images.length; i++) {
images[i] = new Frame(imageWidth, imageHeight, Frame.DEPTH_UBYTE, 2);
timestamps[i] = -1;
}
} else if (yuvImage == null) {
yuvImage = new Frame(imageWidth, imageHeight, Frame.DEPTH_UBYTE, 2);
Log.i(LOG_TAG, "create yuvImage");
OpenCVFrameConverter.ToIplImage converter = new OpenCVFrameConverter.ToIplImage();
yuvIplimage = converter.convert(yuvImage);
}
Log.i(LOG_TAG, "ffmpeg_url: " + ffmpeg_link);
recorder = new FFmpegFrameRecorder(ffmpeg_link, imageWidth, imageHeight, 1);
recorder.setFormat("flv");
recorder.setSampleRate(sampleAudioRateInHz);
// Set in the surface changed method
recorder.setFrameRate(frameRate);
Log.i(LOG_TAG, "recorder initialize success");
audioRecordRunnable = new AudioRecordRunnable();
audioThread = new Thread(audioRecordRunnable);
runAudioThread = true;
}
@Override
public void onPreviewFrame(byte[] data, Camera camera) {
if (audioRecord == null || audioRecord.getRecordingState() != AudioRecord.RECORDSTATE_RECORDING) {
startTime = System.currentTimeMillis();
return;
}
if (RECORD_LENGTH > 0) {
int i = imagesIndex++ % images.length;
yuvImage = images[i];
timestamps[i] = 1000 * (System.currentTimeMillis() - startTime);
}
/* get video data */
int destWidth = 640;
if (yuvIplimage != null && recording) {
ByteBuffer bb = yuvIplimage.getByteBuffer(); // resets the buffer
int start = 2*((imageWidth-destWidth)/4); // this must be even
for (int row=0; row2; row++) {
bb.put(data, start, destWidth);
start += imageWidth;
}
try {
long t = 1000 * (System.currentTimeMillis() - startTime);
if (t > recorder.getTimestamp()) {
recorder.setTimestamp(t);
}
recorder.record(yuvImage);
} catch (FFmpegFrameRecorder.Exception e) {
Log.e(LOG_TAG, "problem with recorder():", e);
}
}
}But the videos generated with this method contained only green frames.
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