Recherche avancée

Sur d’autres sites (7239)

• Missing semicolon before return

  23 novembre 2017, par JAYANTHI

  This is my piece of code, I’m compiling in VS2010 :

  static inline int ff_insert_inpad(AVFilterContext *f, unsigned index, AVFilterPad *p)  
  
      {  
  
          int ret = ff_insert_pad(index, &f->nb_inputs, offsetof(AVFilterLink, dstpad), &f->input_pads, &f->inputs, p); 
  
  
  
      #if FF_API_FOO_COUNT
  
      FF_DISABLE_DEPRECATION_WARNINGS  
  
          f->input_count = f->nb_inputs;  
  
      FF_ENABLE_DEPRECATION_WARNINGS        
  
      #endif
  
  
  
          return ret; // error here
  
  
  
  
  
      }

  I’m getting errors like :

  2>c :\users\awki6\desktop\ffmpeg\libavfilter\internal.h(271) : error C2143 : syntax error : missing ’ ;’ before ’return’
  

• In Powershell, how do you select different parts of a string and output them to variable separately and display them in line ?

  23 mai 2020, par HASJ

  I am trying to create a progress bar for FFmpeg, much like python's FFpb and got far enough that I can capture FFmpeg's output to variable and save the needed info in variables, but only after it ends.

  



  This command saves each line outputted by FFmpeg into the $RedirectOutput variable as objects :

  



  $RedirectOutput = ffmpeg.exe -y -v quiet -stats -hide_banner -hwaccel cuda -i 'input' -c:v hevc_nvenc -preset slow -crf 18 -an -t 300 'output' 2>&1


  



  $RedirectOutput then becomes :

  



  frame=  124 fps=0.0 q=14.0 size=     768kB time=00:00:04.03 bitrate=1559.9kbits/s speed=8.04x
frame=  480 fps=479 q=14.0 size=    3840kB time=00:00:15.90 bitrate=1978.5kbits/s speed=15.9x
frame=  865 fps=576 q=17.0 size=    7424kB time=00:00:28.73 bitrate=2116.6kbits/s speed=19.1x
frame= 1256 fps=627 q=17.0 size=   10496kB time=00:00:41.76 bitrate=2058.7kbits/s speed=20.9x
frame= 1698 fps=678 q=16.0 size=   14080kB time=00:00:56.50 bitrate=2041.5kbits/s speed=22.6x
frame= 2074 fps=691 q=16.0 size=   17152kB time=00:01:09.03 bitrate=2035.4kbits/s speed=  23x
frame= 2515 fps=718 q=16.0 size=   20992kB time=00:01:23.73 bitrate=2053.7kbits/s speed=23.9x
frame= 2972 fps=742 q=18.0 size=   25088kB time=00:01:38.96 bitrate=2076.7kbits/s speed=24.7x
frame= 3404 fps=755 q=18.0 size=   28928kB time=00:01:53.36 bitrate=2090.4kbits/s speed=25.2x
...


  



  Here I save each piece of necessary information into their respective variables :

  



  $videoFps     = $RedirectOutput -replace "(frame=)(\s+)?(\d+)(.*)", "$3"
$videoFps     = $RedirectOutput -replace "(.*)(fps=)(\d+)(.*)", "$3"
$videoSpeed   = $RedirectOutput -replace "(.*)(speed=)(\d+.*)x", "$3"
$videoBitrate = $RedirectOutput -replace "(.*)(bitrate=)(\d+)(.*)", "$3"


  



  Now that the arrays were created, I'd need to write these to the console periodically, in a formatted fashion (that I'll figure out eventually), as the FFmpeg conversion is running (instead of when it finished) and in a singular line, but I don't know how to proceed.

  



  Do I save FFmpeg's output to a file instead of a variable and try to read from there ? If so, how do I read it after each write ? With a while loop ?

  



  Wouldn't that be a performance issue ? I have to say, that isn't a great concern of mine, for now. Just want it to work.

  


• omx : Don’t return > 0 from omx_encode_frame

  24 juin 2016, par Martin Storsjö

  omx : Don’t return > 0 from omx_encode_frame
  The encode function is supposed to just return 0 on success.
  
  This stems from a mixup with the return value of decode functions.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DBH] libavcodec/omx.c