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• How to using every 5 sec generate video output File Path to Encode with RTMP Formate write data in ios ? [on hold]

  16 juillet 2015, par Sandeep Joshi

  (void) segmentRecording:(NSTimer*)timer {
  
  if (!shouldBeRecording) {
  
      [timer invalidate];
  
  }
  
  AVAssetWriter *tempAssetWriter = self.assetWriter;
  
  AVAssetWriterInput *tempAudioEncoder = self.audioEncoder;
  
  AVAssetWriterInput *tempVideoEncoder = self.videoEncoder;
  
  self.assetWriter = queuedAssetWriter;
  
  self.audioEncoder = queuedAudioEncoder;
  
  self.videoEncoder = queuedVideoEncoder;
  
  NSLog(@"Switching encoders");
  
  
  
  dispatch_async(segmentingQueue, ^{
  
      if (tempAssetWriter.status == AVAssetWriterStatusWriting) {
  
          @try {
  
              [tempAudioEncoder markAsFinished];
  
              [tempVideoEncoder markAsFinished];
  
              [tempAssetWriter finishWritingWithCompletionHandler:^{
  
                  if (tempAssetWriter.status == AVAssetWriterStatusFailed) {
  
                      [self showError:tempAssetWriter.error];
  
                  } else {
  
                      [self uploadLocalURL:tempAssetWriter.outputURL];
  
                  }
  
              }];
  
          }
  
          @catch (NSException *exception) {
  
              NSLog(@"Caught exception: %@", [exception description]);
  
              //[BugSenseController logException:exception withExtraData:nil];
  
          }
  
      }
  
      self.segmentCount++;
  
      if (self.readyToRecordAudio && self.readyToRecordVideo) {
  
          NSError *error = nil;
  
          self.queuedAssetWriter = [[AVAssetWriter alloc] initWithURL:[OWUtilities urlForRecordingSegmentCount:segmentCount basePath:self.basePath] fileType:(NSString *)kUTTypeMPEG4 error:&error];
  
          if (error) {
  
              [self showError:error];
  
          }
  
          self.queuedVideoEncoder = [self setupVideoEncoderWithAssetWriter:self.queuedAssetWriter formatDescription:videoFormatDescription bitsPerSecond:videoBPS];
  
          self.queuedAudioEncoder = [self setupAudioEncoderWithAssetWriter:self.queuedAssetWriter formatDescription:audioFormatDescription bitsPerSecond:audioBPS];
  
          //NSLog(@"Encoder switch finished");
  
      }
  
  });}
  
  
  
  
  
  
  
  (void) uploadLocalURL:(NSURL*)url {
  
  NSLog(@"upload local url: %@", url);
  
  NSString *inputPath = [url path];
  
  NSString *outputPath = [inputPath stringByReplacingOccurrencesOfString:@".mp4" withString:@".ts"];
  
  NSString *outputFileName = [outputPath lastPathComponent];
  
  NSDictionary *options = @{kFFmpegOutputFormatKey: @"mpegts"};
  
  NSLog(@"%@ conversion...", outputFileName);
  
  [ffmpegWrapper convertInputPath:[url path] outputPath:outputPath options:options progressBlock:nil completionBlock:^(BOOL success, NSError *error) {
  
      if (success) {
  
          if (!isRtmpConnected) {
  
              isRtmpConnected = [rtmp openWithURL:HOST_URL enableWrite:YES];
  
          }
  
          isRtmpConnected = [rtmp isConnected];
  
  
  
          if (isRtmpConnected) {
  
  
  
              NSData *video = [NSData dataWithContentsOfURL:[NSURL URLWithString:outputPath]];
  
              NSUInteger length = [video length];
  
              NSUInteger chunkSize = 1024 * 5;;
  
              NSUInteger offset = 0;
  
              NSLog(@"original video length: %lu \n chunkSize : %lu", length,chunkSize);
  
            // Let's split video to small chunks to publish to media server
  
              do {
  
                  NSUInteger thisChunkSize = length - offset > chunkSize ? chunkSize : length - offset;
  
                  NSData* chunk = [NSData dataWithBytesNoCopy:(char *)[video bytes] + offset
  
                                                       length:thisChunkSize
  
                                                 freeWhenDone:NO];
  
                  offset += thisChunkSize;
  
  
  
                  // Write new chunk to rtmp server
  
                  NSLog(@"%lu", (unsigned long)[rtmp write:chunk]);
  
                  sleep(1);
  
              } while (offset < length);
  
          }else{
  
              [rtmp close];
  
          }
  
  
  
  
  
      } else {
  
          NSLog(@"conversion error: %@", error.userInfo);
  
      }
  
  }];}

  This code use for live streaming for send data using RTMP Wrapper.
  Not write in Socket properly because every 5 second to generate different file output file.

  This is proper way ?

  I have no idea how to get NSData in proper way.

  Please help me .

• commande ffmpeg not working from php [on hold]

  29 août 2016, par Elmehdi Alloul

  I have a PHP file which executes a command :

  echo shell_exec ( 'ffmpeg -i "http://ip:8000/play/a02o" -b:v 1000k  -vb 1000k  -minrate 1000k -maxrate 1000k -aspect 16:9 -s 720x480 -vprofile main  -r 25 -threads 4  -bufsize 1500k -c:v libx264  -preset veryfast -g 60    -acodec libmp3lame -ar 44100 -ab 64k -strict experimental  -f flv "rtmp://127.0.0.1:708/live/test"  > /dev/null 2>/dev/null &  ' ) ;

  Everything is okay now, but when I restart nginx service, I’m forced to rerun the command again. Is there any way to start this command every time it is stopped ? Also, how can I know the status of the streaming, i.e., whether it is started or not ?

• How to encode BGRA sequence to H.264 video stream using FFmpeg [on hold]

  31 octobre 2016, par Galaxy

  Now I have a frame of BGRA data stored in an array, which is kept being updated under a certain frame rate. Can I use FFmpeg to encode it to a H.264 video stream ? Is there any API I can leverage ?

  This is used as a live H.264 video stream, so I need to write the header at the beginning and send the stream to my server through RTMP. I’m not sure if FFmpeg is suitable for this task. I also heard about GSteamer, I don’t know which one is better to me.

  I’m developing on OS X using C++.