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• Checking for files in a directory with bash script ? what is wrong with this code ?

  4 décembre 2016, par A Sahra

  I have written this code to check for video files in a directory and convert them with ffmpeg.
  while running this script i get out put as "[ERROR] File Not Found" which i have it in else block.what is wrong with the script that i don’t get the files.

  #!/bin/bash
  
  # set PATH to check existance of video file in this directory
  
  checkfiles='/home/webuser/public_html/shareportal/convertedUp_videos/'
  
  #format of output video file
  
  webm='webm'
  
  for f in checkfiles
  
  do
  
  fullfilename="$f"
  
  filenamewithpath=$(basename "$fullfilename")
  
  filewithoutext="${filename%.*}"
  
  fileextention="${filename##*.}"
  
  changeextension=mv --"$f" "${f%.$fileextention}.$webm"
  
  outputfilename="/home/webuser/public_html/shareportal/converted_videos/$changeextension"
  
  echo "File FUll NAME : $fullfilename"
  
  echo "File name with full path : $filenamewithpath"
  
  echo "File name without extention : $filewithoutext"
  
  echo "File extention : $fileextention"
  
  echo '1 File Converted'
  
  if (ffmpeg -i "$f" "$outputfilename")
  
  then
  
  confullfilename="$outputfilename"
  
  confilenamewithpath=$(basename "$confullfilename")
  
  confilewithoutext="${filename%.*}"
  
  confileextention="${filename##*.}"
  
  echo "File FUll NAME : $confullfilename"
  
  echo "File name with full path : $confilenamewithpath"
  
  echo "File name without extention : $confilewithoutext"
  
  echo "File extention : $confileextention"
  
  echo '1 File Converted'
  
  else
  
  echo "Could Not Convert File"
  
  fi
  
  #get Image of video file on provided time stamp
  
  image_path='/home/webuser/public_html/shareportal/video_images/$filewithoutext.png'
  
  if (ffmpeg -ss 00:00:03 -i "$f" -vframes:v 1 "$image_path")
  
  then
  
  echo "Image Extracted"
  
  else
  
  echo "Could not Extract Image"
  
  fi
  
  done
  
  rm -r f

• Checking for files in a directory with bash script ? what is wrong with this code ?

  14 mars 2018, par A Sahra

  I have written this code to check for video files in a directory and convert them with ffmpeg.
  while running this script i get out put as "[ERROR] File Not Found" which i have it in else block.what is wrong with the script that i don’t get the files.

  #!/bin/bash
  
  # set PATH to check existance of video file in this directory
  
  checkfiles='/home/webuser/public_html/shareportal/convertedUp_videos/'
  
  #format of output video file
  
  webm='webm'
  
  for f in checkfiles
  
  do
  
  fullfilename="$f"
  
  filenamewithpath=$(basename "$fullfilename")
  
  filewithoutext="${filename%.*}"
  
  fileextention="${filename##*.}"
  
  changeextension=mv --"$f" "${f%.$fileextention}.$webm"
  
  outputfilename="/home/webuser/public_html/shareportal/converted_videos/$changeextension"
  
  echo "File FUll NAME : $fullfilename"
  
  echo "File name with full path : $filenamewithpath"
  
  echo "File name without extention : $filewithoutext"
  
  echo "File extention : $fileextention"
  
  echo '1 File Converted'
  
  if (ffmpeg -i "$f" "$outputfilename")
  
  then
  
  confullfilename="$outputfilename"
  
  confilenamewithpath=$(basename "$confullfilename")
  
  confilewithoutext="${filename%.*}"
  
  confileextention="${filename##*.}"
  
  echo "File FUll NAME : $confullfilename"
  
  echo "File name with full path : $confilenamewithpath"
  
  echo "File name without extention : $confilewithoutext"
  
  echo "File extention : $confileextention"
  
  echo '1 File Converted'
  
  else
  
  echo "Could Not Convert File"
  
  fi
  
  #get Image of video file on provided time stamp
  
  image_path='/home/webuser/public_html/shareportal/video_images/$filewithoutext.png'
  
  if (ffmpeg -ss 00:00:03 -i "$f" -vframes:v 1 "$image_path")
  
  then
  
  echo "Image Extracted"
  
  else
  
  echo "Could not Extract Image"
  
  fi
  
  done
  
  rm -r f

• using X264 and librtmp to send live camera frame, but the flash can't show

  9 mai 2016, par brian_wang

  I am using X264 and librtmp to send my live camera frame, all the things seems right. but my web test flash can’t show the correct video. Sometimes it seems correct, but when I re-click play button, it doesn’t show any picture on the flash.

  Here is my X264 config code

  x264_param_default_preset(&x264param, "ultrafast", "zerolatency");
  
  x264param.i_threads = 2;
  
  x264param.i_width = width;
  
  x264param.i_height = height;
  
  x264param.i_log_level = X264_LOG_DEBUG;
  
  x264param.i_fps_num = x264param.i_timebase_num= fps;
  
  x264param.i_fps_den = x264param.i_timebase_den=1;
  
  x264param.i_frame_total = 0;
  
  
  
  x264param.i_frame_reference =1;
  
  //x264param.i_frame_reference = 2;
  
  x264param.i_keyint_min = 25;
  
  x264param.i_keyint_max = fps*3;
  
  x264param.i_scenecut_threshold = 40;
  
  
  
  x264param.b_deblocking_filter = 1;
  
  x264param.b_cabac = 0;
  
  x264param.analyse.i_trellis = 0;
  
  x264param.analyse.b_chroma_me = 1;
  
  
  
  x264param.vui.i_sar_width = 0;
  
  x264param.vui.i_sar_height = 0;
  
  x264param.i_bframe_bias = 0;
  
  x264param.b_interlaced= 0;
  
  x264param.analyse.i_subpel_refine = 6; /* 0..5 -> 1..6 */
  
  x264param.analyse.i_me_method = X264_ME_DIA;//X264_ME_HEX?X264_ME_DIA
  
  x264param.analyse.i_me_range = 16;
  
  x264param.analyse.i_direct_mv_pred = X264_DIRECT_PRED_AUTO;
  
  x264param.i_deblocking_filter_alphac0 = 0;
  
  x264param.i_deblocking_filter_beta = 0;
  
  //x264param.analyse.intra = X264_ANALYSE_I4x4;
  
  x264param.analyse.intra = X264_ANALYSE_I4x4;//  | X264_ANALYSE_PSUB16x16 | X264_ANALYSE_BSUB16x16;
  
  x264param.analyse.inter = X264_ANALYSE_I4x4 | X264_ANALYSE_PSUB16x16 | X264_ANALYSE_BSUB16x16; 
  
  //edit 2014-7-28
  
  x264param.analyse.b_transform_8x8 = 1;
  
  //x264param.analyse.b_transform_8x8 = 0;
  
  x264param.analyse.b_fast_pskip = 1;
  
  x264param.i_bframe = 0;
  
  //x264param.b_intra_refresh
  
  x264param.analyse.b_weighted_bipred = 0;
  
  
  
  //// Intra refres:
  
  x264param.i_keyint_max = 250;
  
  x264param.b_intra_refresh = 0;
  
  ////Rate control:
  
  //x264param.rc.i_rc_method = X264_RC_CRF;
  
  
  
  //Rate Control
  
  x264param.rc.f_ip_factor = 1.4f;
  
  x264param.rc.f_pb_factor = 1.3f;
  
  x264param.rc.f_qcompress = 1.0;
  
  x264param.rc.i_qp_min = 20;//20;
  
  x264param.rc.i_qp_max = 32;
  
  x264param.rc.i_qp_step = 1;
  
  
  
  switch (0)
  
  {
  
  case 0: /* 1 PASS ABR */
  
      x264param.rc.i_rc_method = X264_RC_ABR;
  
      x264param.rc.i_bitrate = 300; // max = 5000
  
      x264param.rc.b_mb_tree = 0;
  
      break;
  
  case 1: /* 1 PASS CQ */
  
      x264param.rc.i_rc_method = X264_RC_CQP;
  
      x264param.rc.i_qp_constant = 26;//10 - 51
  
      break;
  
  }
  
  
  
  //For streaming:
  
  x264param.b_repeat_headers = 1;
  
  x264param.b_annexb = 1;
  
  x264_param_apply_profile(&x264param, "baseline");
  
  encoder = x264_encoder_open(&x264param);
  
  x264_picture_init( &pic_in );
  
  x264_picture_alloc(&pic_in, X264_CSP_I420, width, height);
  
  
  
  pic_in.img.i_csp = X264_CSP_I420|X264_CSP_VFLIP;
  
  pic_in.img.i_plane = 3;
  
  pic_in.i_type = X264_TYPE_AUTO;

  Sending To RTMP :

  sws_scale(convertCtx,&a,&scribe,0,height, pic_in.img.plane, pic_in.img.i_stride);
  
  int i_nal;
  
  int i_frame_size = x264_encoder_encode( encoder, &nal, &i_nal, &pic_in, &pic_out );
  
  if(i_frame_size <= 0){
  
      printf("\t!!!FAILED encode frame \n");
  
  }else{
  
      for (int i = 0,last=0; i < i_nal;i++)  
  
      {
  
          fwrite(nal[i].p_payload, 1, i_frame_size-last, fpw1);
  
          if (nal[i].i_type == NAL_SPS) {
  
              sps_len = nal[i].i_payload-4;
  
              sps  = new unsigned char[sps_len];
  
              memcpy(sps,nal[i].p_payload+4,sps_len);
  
          } else if (nal[i].i_type == NAL_PPS) {
  
              pps_len = nal[i].i_payload-4;
  
              pps  = new unsigned char[sps_len];
  
              memcpy(pps,nal[i].p_payload+4,pps_len);
  
              send_video_sps_pps(); 
  
              free(sps);
  
              free(pps);
  
          } else {
  
              send_rtmp_video(nal[i].p_payload,i_frame_size-last);
  
              break;
  
          }
  
          last += nal[i].i_payload;
  
      }
  
  }

  Send PPS and SPS

  void send_video_sps_pps(){
  
  if(rtmp!= NULL){
  
      RTMPPacket * packet;
  
      unsigned char * body;
  
      int i;
  
  
  
      packet = (RTMPPacket *)malloc(RTMP_HEAD_SIZE+1024);
  
      memset(packet,0,RTMP_HEAD_SIZE);
  
  
  
      packet->m_body = (char *)packet + RTMP_HEAD_SIZE;
  
      body = (unsigned char *)packet->m_body;
  
      i = 0;
  
      body[i++] = 0x17;
  
      body[i++] = 0x00;
  
  
  
      body[i++] = 0x00;
  
      body[i++] = 0x00;
  
      body[i++] = 0x00;
  
  
  
      /*AVCDecoderConfigurationRecord*/
  
      body[i++] = 0x01;
  
      body[i++] = sps[1];
  
      body[i++] = sps[2];
  
      body[i++] = sps[3];
  
      body[i++] = 0xff;
  
  
  
      /*sps*/
  
      body[i++]   = 0xe1;
  
      body[i++] = (sps_len >> 8) & 0xff;
  
      body[i++] = sps_len & 0xff;
  
      memcpy(&body[i],sps,sps_len);
  
      i +=  sps_len;
  
  
  
      /*pps*/
  
      body[i++]   = 0x01;
  
      body[i++] = (pps_len >> 8) & 0xff;
  
      body[i++] = (pps_len) & 0xff;
  
      memcpy(&body[i],pps,pps_len);
  
      i +=  pps_len;
  
  
  
      packet->m_packetType = RTMP_PACKET_TYPE_VIDEO;
  
      packet->m_nBodySize = i;
  
      packet->m_nChannel = 0x04;
  
      packet->m_nTimeStamp = 0;
  
      packet->m_hasAbsTimestamp = 0;
  
      packet->m_headerType = RTMP_PACKET_SIZE_MEDIUM;
  
      packet->m_nInfoField2 = rtmp->m_stream_id;
  
  
  
      RTMP_SendPacket(rtmp,packet,TRUE);
  
      free(packet);   
  
      rtmp_start_time = GetTickCount();
  
  }else{
  
      std::cout<<"RTMP is not ready"<code>

  Send video Frame

  void send_rtmp_video(unsigned char * buf,int len){
  
  RTMPPacket * packet;
  
  long timeoffset = GetTickCount() - rtmp_start_time; 
  
  
  
  int type = buf[0]&0x1f;
  
  
  
  packet = (RTMPPacket *)malloc(RTMP_HEAD_SIZE+len+9);
  
  memset(packet,0,RTMP_HEAD_SIZE);
  
  
  
  packet->m_body = (char *)packet + RTMP_HEAD_SIZE;
  
  packet->m_nBodySize = len + 9;
  
  
  
  /*send video packet*/
  
  unsigned char *body = (unsigned char *)packet->m_body;
  
  memset(body,0,len+9);
  
  
  
  /*key frame*/
  
  body[0] = 0x27;
  
  if (type == NAL_SLICE_IDR) {
  
      body[0] = 0x17;
  
  }
  
  
  
  body[1] = 0x01;   /*nal unit*/
  
  body[2] = 0x00;
  
  body[3] = 0x00;
  
  body[4] = 0x00;
  
  
  
  body[5] = (len >> 24) & 0xff;
  
  body[6] = (len >> 16) & 0xff;
  
  body[7] = (len >>  8) & 0xff;
  
  body[8] = (len ) & 0xff;
  
  
  
  /*copy data*/
  
  memcpy(&body[9],buf,len);
  
  
  
  packet->m_hasAbsTimestamp = 0;
  
  packet->m_packetType = RTMP_PACKET_TYPE_VIDEO;
  
  if(rtmp != NULL){
  
      packet->m_nInfoField2 = rtmp->m_stream_id;
  
  }
  
  packet->m_nChannel = 0x04;
  
  packet->m_headerType = RTMP_PACKET_SIZE_LARGE;
  
  packet->m_nTimeStamp = timeoffset;
  
  
  
  if(rtmp != NULL){
  
      RTMP_SendPacket(rtmp,packet,TRUE);
  
  }
  
  free(packet);

  }