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• av_find_stream_info works OK with file, not with pipe

  14 décembre 2016, par Aliza

  I have the following code :

  av_register_all();
  
  pFormatCtx = avformat_alloc_context();
  
  const char* input = "pipe:";
  
  AVInputFormat* iFormat = av_find_input_format("mpegts");
  
  if ( avformat_open_input(&pFormatCtx, input, iFormat, NULL) != 0 )
  
           return -1;
  
  int res = av_find_stream_info(pFormatCtx);

  when my input is a regular file, this works nicely and pFormatCtx is populated with the streams in the file. However, when i set input to "pipe :", av_find_stream_info returns with -1.

  I am using the same file and piping it by running
  cat mpeg.ts | myApp

  Any ideas ?

  Thanks,
  Aliza

• ftp upload then loop

  23 juillet 2012, par thevoipman

  I have a minor bash script loop I'm trying to learn and accomplish but it's giving me a hard time to comprehend with all the readings I've done.

  I am uploading to a ftp server, then I want to check to see if the upload went through successfully by using wget spider method. If it returns OK then we're good, if not then I want to redo the ftp upload once more.

  The code I have below are based on my research and learning from here. If I could be doing this better, please help me revise it so I can learn from it.

  Thanks again in advance :

  for ((i = 0 ; i < 1 ; i++ )); 
  
  do 
  
      wget_output=$(wget -q --spider "http://$FTP_HOST/test.jpg")
  
      if [ $? -ne 0 ]; 
  
      then
  
  
  
          ftp -in $FTP_HOST &lt;<endftp user="user" binary="binary" put="put" bye="bye" endftp="endftp" else="else" echo="echo" code="code" fi="fi" done="done"></endftp>code>

  My errors when executing is :

  line 28: syntax error: unexpected end of file

• Revision 7050074756 : Make the api behavior conform to api spec. When no more data is available, vpx_

  1er août 2014, par Hangyu Kuang

  Changed Paths :
   Modify /test/decode_test_driver.cc

  
   Modify /vp8/vp8_dx_iface.c

  
   Modify /vp9/vp9_dx_iface.c

  
  
  Make the api behavior conform to api spec.

  When no more data is available, vpx_codec_decode should
  be called with NULL as data and 0 as data_sz.

  vpx_codec_get_frame iterates over a list of the frames
  available for display. The iterator storage should be initialized
  to NULL to start the iteration. Iteration is complete when this
  function returns NULL.

  Also change the unit test to conform to the api spec.

  Change-Id : I4b258b309f5df3d37d10c82f01492c0394181c2a