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• Fix Iframe Transport form submit for Safari 13.

  19 avril 2020, par blueimp

  Fix Iframe Transport form submit for Safari 13.
  Fixes #3633
  

• Video portal web form site having issues on Azure server

  18 septembre 2015, par Ahmed Mujtaba

  I have a website built on ASP.NET web forms that works as a media portal for users to upload videos. I’m using ffmpeg encoders to produce video contents to be streamed in the browser. I’m using the web deploy method to publish the site on the Azure server. The website get’s deployed properly however I get following issues in the live site.

  1. Video never get’s encoded and published. I get some sort of error.

  2. Video get’s published but the process of uploading and encoding the video is way too slow on the web server.

  3. The home page of the website has a video wallpaper. The video reference is in the directory videowall that is in the root directory of the project. The video plays fine on the local server but the web server says it couldn’t find the file to play even though it’s present in the ftp root directory.

  My project solution contains upload.ashx that handles the upload requests and makes the call to encode.ashx which is responsible for the encoding and publishing of the videos. I tried to remotely debug the site but the debugger never get’s to encode.ashx.

  I was wondering if these issues can be resolved by having the website deployed with a VM ?

• Publish RTMP stream to Red5 Server form iOS camera

  7 septembre 2015, par Mohammad Asif

  Please look at following code, I have transformed CMSampleBufferRef into AV_CODEC_ID_H264 but I don’t know how to transmit it to Red5 server.

  Thanks,

  - (void)  captureOutput:(AVCaptureOutput *)captureOutput
  
    didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
  
       fromConnection:(AVCaptureConnection *)connection {
  
  
  
  //NSLog(@"This is working ....");
  
  
  
    // [connection setVideoOrientation: [self deviceOrientation] ];
  
  
  
  if( !CMSampleBufferDataIsReady(sampleBuffer) )
  
  {
  
      NSLog( @"sample buffer is not ready. Skipping sample" );
  
      return;
  
  } else {
  
  
  
      if (captureOutput == videoOutput) {
  
  
  
  
  
          CVPixelBufferRef pixelBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);
  
          CVPixelBufferLockBaseAddress(pixelBuffer, 0);
  
  
  
          // access the data
  
          float width = CVPixelBufferGetWidth(pixelBuffer);
  
          float height = CVPixelBufferGetHeight(pixelBuffer);
  
  
  
          //float bytesPerRow = CVPixelBufferGetBytesPerRowOfPlane(pixelBuffer, 0);
  
          unsigned char *rawPixelBase = (unsigned char *)CVPixelBufferGetBaseAddressOfPlane(pixelBuffer, 0);
  
  
  
  
  
          // Convert the raw pixel base to h.264 format
  
  
  
          if (codec == nil) {
  
  
  
              codec = 0;
  
              context = 0;
  
              frame = 0;
  
  
  
              fmt = avformat_alloc_context();
  
              //avformat_write_header(fmt, NULL);
  
  
  
              codec = avcodec_find_encoder(AV_CODEC_ID_H264);
  
  
  
              if (codec == 0) {
  
                  NSLog(@"Codec not found!!");
  
                  return;
  
              }
  
  
  
              context = avcodec_alloc_context3(codec);
  
  
  
              if (!context) {
  
                  NSLog(@"Context no bueno.");
  
                  return;
  
              }
  
  
  
              // Bit rate
  
              context->bit_rate = 400000; // HARD CODE
  
              context->bit_rate_tolerance = 10;
  
              // Resolution
  
  
  
              // Frames Per Second
  
              context->time_base = (AVRational) {1,25};
  
              context->gop_size = 1;
  
              //context->max_b_frames = 1;
  
              context->width = width;
  
              context->height = height;
  
              context->pix_fmt = PIX_FMT_YUV420P;
  
  
  
              // Open the codec
  
              if (avcodec_open2(context, codec, 0) < 0) {
  
                  NSLog(@"Unable to open codec");
  
                  return;
  
              }
  
  
  
              // Create the frame
  
              frame = av_frame_alloc();
  
              if (!frame) {
  
                  NSLog(@"Unable to alloc frame");
  
                  return;
  
              }
  
          }
  
  
  
          context->width = width;
  
          context->height = height;
  
  
  
          frame->format = context->pix_fmt;
  
          frame->width = context->width;
  
          frame->height = context->height;
  
  
  
          //int nbytes = avpicture_get_size(context->pix_fmt, context->width, context->height);
  
          //uint8_t* outbuffer = (uint8_t*)av_malloc(nbytes);
  
  //            AVFrame *pFrameDecoded = avcodec_alloc_frame();
  
  //            int num_bytes2 = avpicture_get_size(context->pix_fmt, frame->width, frame->height);
  
  //            uint8_t* frame2_buffer2 = (uint8_t *)av_malloc(num_bytes2 * sizeof(uint8_t));
  
  //            avpicture_fill((AVPicture*)pFrameDecoded, frame2_buffer2, PIX_FMT_YUVJ422P, 320, 240);
  
  
  
          frame->pts = (1.0 / 30) * 60 * count;
  
          avpicture_fill((AVPicture *) frame, rawPixelBase, context->pix_fmt, frame->width, frame->height);
  
  
  
          int got_output = 0;
  
          av_init_packet(&packet);
  
          //avcodec_encode_video2(context, &packet, frame, &got_output);
  
  
  
          do {
  
              avcodec_encode_video2(context, &packet, frame, &got_output);
  
              //avcodec_decode_video2(context, &packet, NULL, &got_output);
  
              //*... handle received packet*/
  
  
  
              if (isFirstPacket) {
  
                  [rtmp sendCreateStreamPacket];
  
                  isFirstPacket = false;
  
                  //av_dump_format(fmt, 0, [kRtmpEP UTF8String], 1);
  
                  avformat_alloc_output_context2(&ofmt_ctx, NULL, "flv", [kRtmpEP UTF8String]); //RTMP
  
              }
  
  
  
              packet.stream_index = ofmt_ctx->nb_streams;
  
              av_interleaved_write_frame(ofmt_ctx, &packet);
  
              count ++;
  
  
  
              //[rtmp write:[NSData dataWithBytes:packet.data length:packet.size]];
  
  
  
  
  
          } while(got_output);
  
  
  
          // Unlock the pixel data
  
          CVPixelBufferUnlockBaseAddress(pixelBuffer, 0);
  
  
  
          //[rtmp write:[NSData dataWithBytes:packet.data length:packet.size]];
  
  
  
      } else {
  
  
  
      }
  
  }   }