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• ffmpeg - convert movie AND show original input (as resized picture-in-picture, top-left corner) in the final output file

  2 octobre 2019, par raven

  this is my first post on this forum, so please be gentle in case I accidentally do trip over any forum rules that I would not know of yet :).

  I would like to apply some color-grading to underwater GoPro footage. To quicker gauge the effect of my color settings (trial-and-error, as of yet), would like to see the original input video stream as a PIP (e.g., scaled down 50%), in the top-left corner of the converted output movie.

  I have one input movie that is going to be color graded. The PIP should use the original as an input, just a scaled-down version of it.

  I would like to use ffmpeg’s -filter_complex option to do the PIP, but all examples I can find on "-filter_complex" would use two already existing movies. Instead, I would like to make the color-corrected stream an on-the-fly input to "-filter_complex", which then renders the PIP.

  Is that doable, all in one go ?

  Both the individual snippets below work fine, I now would like to combine these and skip the creation of an intermediate color-graded video. Your help combining these two steps into one single process is greatly appreciated !

  Thanks in advance,
  raven.

  [existing code snippets (M$ batch files)]
  
  
  
  ::declarations/defines::
  
  set "INPUT="
  
  set "TMP="
  
  set "OUTPUT="
  
  set "FFMPG="
  
  set "QU=9" :: quality settings
  
  
  
  set "CONV='"0 -1 0 -1 5 -1 0 -1 0:0 -1 0 -1 5 -1 0 -1 0:0 -1 0 -1 5 -1 
  
  0 -1 0:0 -1 0 -1 5 -1 0 -1 0'"" :: sharpening convolution filter
  
  
  
  ::color-grading part::
  
  %FFMPG% -i %INPUT% -vf convolution=%CONV%,colorbalance=rs=%rs%:gs=%gs%:bs=%bs%:rm=%rm%:gm=%gm%:bm=%bm%:rh=%rh%:gh=%gh%:bh=%bh% -q:v %QU% -codec:v mpeg4 %TMP%
  
  
  
  ::PIP part::
  
  %FFMPG% -i %INPUT% -i %TMP% -filter_complex "[1]scale=iw/3:ih/3 
  
  [pip]; [0][pip] overlay=main_w-overlay_w-10:main_h-overlay_h-10" -q:v 
  
  %QU% -codec:v mpeg4 %OUTPUT%
  
  
  
  [/existing code]

• Anomalie #2834 (Fermé) : liens dans mails inutilisables pour les modérer

  29 août 2012, par jluc -

  Un message de forum sur spip-contrib contient 2 liens pour "supprimer" ou "valider" le commentaire. Mais ces 2 liens mènent à une page affichant simplement "Vous n’avez pas le droit de moderer ce message" bien que je sois admin complet de ce site, et ce même si je suis logué sur ce site. 1- Il (...)

• Protect files from direct access by url on iis server and MVC APP with identity

  19 octobre 2022, par Ahmed Ramadan

  i have MVC app with identity authentication
this site business is playing video which edited by ffmpeg .

  


    <video class="video-js vjs-default-skin" width="640" height="360" controls="controls">&#xA;    <source src="video\index.m3u8" type="application/x-mpegURL">&#xA;</source></video>&#xA;

  


  i want to prevent direct access from browser to this link , unless user has session
https://localhost/vide/index.m3u8

  


  i tired this code for config file

  


  &#xA;        <authorization>&#xA;            <deny users="?"></deny>&#xA;        </authorization>&#xA;    &#xA;

  


  but i still be able to access the file and not able to aceess folder

  


  ex :-

  


  https://localhost/video/index.m3u8 


  


  accessible

  


      https://localhost/video


  


  Not accessible !

  


  i tried this link , but still not get it
how to deny user to access sub folders and file ?