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• Recording from an ImageView using FFmpegFrameRecorder

  8 novembre 2015, par UserAx

  I want to convert images displayed in a imageview to a video using FFmpegFrameRecorder, and add audio using mic as the source

  I have imported JavaCV to my project(javacv.jar, javacpp.jar, opencv.jar , openv-android-arm.jar, ffmpeg.jar, ffmpeg-android-arm.jar ; added them under project structure/dependencies)

  I am using this code https://github.com/gderaco/JavaCVTest/tree/master

  I get error as "record (org.bytedeco.javacv.Frame) in FFmpegFrameRecorder cannot be applied to (org.bytedeco.javacpp.opencv_coreiplImage)"

  where have i gone wrong and how to add mic as the audio source ?

  CODE:
  
  import..
  
  
  
  import org.bytedeco.javacpp.opencv_core;
  
  import org.bytedeco.javacv.FFmpegFrameRecorder;
  
  
  
  import static org.bytedeco.javacpp.opencv_imgcodecs.cvLoadImage;
  
  
  
  public class MyAndroidAppActivity extends Activity {
  
  
  
  ImageView image;
  
  
  
  @Override
  
  public void onCreate(Bundle savedInstanceState) {
  
  super.onCreate(savedInstanceState);
  
  setContentView(R.layout.main);
  
  
  
  addListenerOnButton();
  
  
  
  opencv_core.IplImage img = cvLoadImage("ImageView");
  
  
  
  FFmpegFrameRecorder recorder = new                
  
  FFmpegFrameRecorder("/sdcard/test.mpeg",200,150);
  
  
  
      try {
  
          recorder.setFrameRate(30);
  
          recorder.start();
  
  
  
          for (int i=0;i<100;i++)
  
          {
  
              recorder.record(img);
  
          }
  
          recorder.stop();
  
      }
  
      catch (Exception e){
  
          e.printStackTrace();
  
      }
  
  
  
  }
  
  
  
  public void addListenerOnButton() {
  
  
  
  image = (ImageView) findViewById(R.id.imageView1);
  
  button = (Button) findViewById(R.id.btn1);
  
  
  
  button.setOnClickListener(new OnClickListener() {
  
      @Override
  
      public void onClick(View arg0) {
  
          image.setImageResource(R.drawable.image1);
  
      }
  
  });
  
  
  
  //...........
  
  
  
  button = (Button) findViewById(R.id.btn10);
  
  
  
  button.setOnClickListener(new OnClickListener() {
  
      @Override
  
      public void onClick(View arg0) {
  
          image.setImageResource(R.drawable.image10);
  
      }
  
  
  
  });
  
  }

• FFMpeg avformat_write_header always returns 0

  24 octobre 2015, par gabe.roze

  We’ve asked a freelancer to build a video encoder with FFMPeg for iOS but there is a bug and the freelancer is no longer available. I very inexperienced in FFMpeg and video encoding and am trying to debug this error.

  From what I understand, we’re attempting to create an output file and create a header for it however, avformat_write_header is always less than zero. If I comment it out, it does not work

  - (BOOL) writeHeaderWithError:(NSError *__autoreleasing *)error {
  
      AVDictionary *options = NULL;
  
  
  
      // Write header for output file
  
      int writeHeaderValue = avformat_write_header(self.formatContext, &options);
  
      if (writeHeaderValue < 0) {
  
          if (error != NULL) {
  
              *error = [FFUtilities errorForAVError:writeHeaderValue];
  
          }
  
          av_dict_free(&options);
  
          return NO;
  
      }
  
      av_dict_free(&options);
  
      return YES;
  
  }

  Below is some relevant code of how we instantiate a FFOutputFile

      - (AVFormatContext*) formatContextForOutputPath:(NSString*)outputPath options:(NSDictionary*)options {
  
      AVFormatContext *outputFormatContext = NULL;
  
      NSString *outputFormatString = [options objectForKey:kFFmpegOutputFormatKey];
  
  
  
      int openOutputValue = avformat_alloc_output_context2(&outputFormatContext, NULL, [outputFormatString UTF8String], [outputPath UTF8String]);
  
      if (openOutputValue < 0) {
  
          avformat_free_context(outputFormatContext);
  
          return nil;
  
      }
  
      return outputFormatContext;
  
  }
  
  
  
  - (void) addOutputStream:(FFOutputStream*)outputStream {
  
      [self.streams addObject:outputStream];
  
  }
  
  
  
  - (id) initWithPath:(NSString *)path options:(NSDictionary *)options {
  
      if (self = [super initWithPath:path options:options]) {
  
          self.formatContext = [self formatContextForOutputPath:path options:options];
  
          self.streams = [NSMutableArray array];
  
          self.bitstreamFilters = [NSMutableSet set];
  
      }
  
      return self;
  
  }

• Swift MpmoviePlayerController RTSP Live Stream

  17 octobre 2015, par Janis Thr

  I want to stream a livepicture via RTSP from my actioncam (Qumox SJ4000) to MPMoviePlayerController.
  Does someone have an idea if this is possible ? Do I need FFmpeg to convert the Stream to HLS or is there an easier solution ?

  My current code works fine with the HLS-Stream, but not with the rtsp-stream.

  import UIKit
  
  import MediaPlayer
  
  
  
  
  
  class ViewController: UIViewController {
  
  
  
      var moviePlayer: MPMoviePlayerController!
  
  
  
         override func viewDidLoad() {
  
          super.viewDidLoad()
  
  
  
          var url:NSURL = NSURL(string: "http://jplayer.org/video/m4v/Big_Buck_Bunny_Trailer.m4v")!
  
          //url = NSURL(string: "rtsp://192.168.1.254:554/sjcam.mov")!
  
          moviePlayer = MPMoviePlayerController(contentURL: url)
  
          moviePlayer.view.frame = CGRect(x: 20, y: 100, width: 200, height: 150)
  
  
  
          self.view.addSubview(moviePlayer.view)
  
          moviePlayer.fullscreen = false
  
  
  
          moviePlayer.controlStyle = MPMovieControlStyle.Embedded
  
          moviePlayer.prepareToPlay()
  
          moviePlayer.play()
  
  
  
      }
  
  }