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FFMPEG av_read_frame() return an I/O error (-5)?

Rotating videos with FFmpeghow to solve ffmpeg watermark “No such filter: 'movie'” AND “Failed to avformat_open_input”?What is an undefined reference/unresolved external symbol error and how do I fix it?Get rtsp error when connection is corrupted?Camera's pts and dts jumps issueFFMPEG error with avformat_open_input returning -135ffmpeg RTSP error while decoding MBffmpeg avcodec_open2() return error -22 only in ubuntuffmpeg issues “501 Not Implemented” while recording an RTSP streamError When Capturing from the Surface Camera

0

I'm using ffmpeg library to capture screen (desktop). Everything works fine when I run my app in debug/release mode. The I/O error comes when this app run in c# window service mode (win 10 OS). I googled but still don't know why the error come. In the service mode there is no problem when connecting to some rtsp link (Camera) except desktop capture.

AVInputFormat * pAVInputFormat = av_find_input_format("gdigrab"); 
if (pAVInputFormat != NULL) 
 
 int err = avformat_open_input(&pFormatCtx, "desktop", pAVInputFormat, NULL); 
 if(err== 0) 
 
 err = av_read_frame(&pFormatCtx, &packet); 
 if (err < 0) 
 
 char errs[AV_ERROR_MAX_STRING_SIZE]; 
 av_make_error_string(errs, AV_ERROR_MAX_STRING_SIZE, err ); 
 String^ errStr = gcnew String(errs); 
 WriteLog("Error in function av_read_frame() return = " + errStr); 
 return -1; 
 
 

---

c++ service ffmpeg

share|improve this question

edited Mar 7 at 0:55

vominhtien961476

asked Mar 7 at 0:43

vominhtien961476vominhtien961476

62213

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  I don't know the specifics, but I read that services normally don't have access to the desktop.
  
  – immibis
  Mar 7 at 3:15
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  av_make_error_string(errs, AV_ERROR_MAX_STRING_SIZE, err ); must give you what the error is, and I believe -5 is EIO, aka IO Error.
  
  – the kamilz
  Mar 7 at 11:14
  

  
  
  
  

add a comment | 

0

I'm using ffmpeg library to capture screen (desktop). Everything works fine when I run my app in debug/release mode. The I/O error comes when this app run in c# window service mode (win 10 OS). I googled but still don't know why the error come. In the service mode there is no problem when connecting to some rtsp link (Camera) except desktop capture.

AVInputFormat * pAVInputFormat = av_find_input_format("gdigrab"); 
if (pAVInputFormat != NULL) 
 
 int err = avformat_open_input(&pFormatCtx, "desktop", pAVInputFormat, NULL); 
 if(err== 0) 
 
 err = av_read_frame(&pFormatCtx, &packet); 
 if (err < 0) 
 
 char errs[AV_ERROR_MAX_STRING_SIZE]; 
 av_make_error_string(errs, AV_ERROR_MAX_STRING_SIZE, err ); 
 String^ errStr = gcnew String(errs); 
 WriteLog("Error in function av_read_frame() return = " + errStr); 
 return -1; 
 
 

---

c++ service ffmpeg

share|improve this question

edited Mar 7 at 0:55

vominhtien961476

asked Mar 7 at 0:43

vominhtien961476vominhtien961476

62213

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  I don't know the specifics, but I read that services normally don't have access to the desktop.
  
  – immibis
  Mar 7 at 3:15
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  av_make_error_string(errs, AV_ERROR_MAX_STRING_SIZE, err ); must give you what the error is, and I believe -5 is EIO, aka IO Error.
  
  – the kamilz
  Mar 7 at 11:14
  

  
  
  
  

add a comment | 

I'm using ffmpeg library to capture screen (desktop). Everything works fine when I run my app in debug/release mode. The I/O error comes when this app run in c# window service mode (win 10 OS). I googled but still don't know why the error come. In the service mode there is no problem when connecting to some rtsp link (Camera) except desktop capture.

AVInputFormat * pAVInputFormat = av_find_input_format("gdigrab"); 
if (pAVInputFormat != NULL) 
 
 int err = avformat_open_input(&pFormatCtx, "desktop", pAVInputFormat, NULL); 
 if(err== 0) 
 
 err = av_read_frame(&pFormatCtx, &packet); 
 if (err < 0) 
 
 char errs[AV_ERROR_MAX_STRING_SIZE]; 
 av_make_error_string(errs, AV_ERROR_MAX_STRING_SIZE, err ); 
 String^ errStr = gcnew String(errs); 
 WriteLog("Error in function av_read_frame() return = " + errStr); 
 return -1; 
 
 

---

c++ service ffmpeg

share|improve this question

edited Mar 7 at 0:55

vominhtien961476

asked Mar 7 at 0:43

vominhtien961476vominhtien961476

62213

AVInputFormat * pAVInputFormat = av_find_input_format("gdigrab"); 
if (pAVInputFormat != NULL) 
 
 int err = avformat_open_input(&pFormatCtx, "desktop", pAVInputFormat, NULL); 
 if(err== 0) 
 
 err = av_read_frame(&pFormatCtx, &packet); 
 if (err < 0) 
 
 char errs[AV_ERROR_MAX_STRING_SIZE]; 
 av_make_error_string(errs, AV_ERROR_MAX_STRING_SIZE, err ); 
 String^ errStr = gcnew String(errs); 
 WriteLog("Error in function av_read_frame() return = " + errStr); 
 return -1; 
 
 

share|improve this question

edited Mar 7 at 0:55

vominhtien961476

asked Mar 7 at 0:43

vominhtien961476vominhtien961476

62213

share|improve this question

edited Mar 7 at 0:55

vominhtien961476

asked Mar 7 at 0:43

vominhtien961476vominhtien961476

62213

asked Mar 7 at 0:43

vominhtien961476vominhtien961476

62213

asked Mar 7 at 0:43

vominhtien961476vominhtien961476

62213