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• ffplay / ffmpeg with audio and video filters

  20 juillet 2018, par user10104150

  i tried to modify a already existing code for ffplay for hours, but I could not get it.
  I could not find a manual for vertical and horizontal stacking parameters. I’m always getting invalid argument errors when I try to adopt it to my needs.
  So I’m asking here for help.

  My idea is based on that : ffplay / ffmpeg setup table with audio and video filters

  The working code that I modified a little but want to modify further without luck is :

  ffplay -f lavfi \
  
           "amovie=in.mp4,asplit=3[sv][eb][av]; \
  
            [sv]showvolume=b=4:f=0:ds=log:c=VOLUME:w=720:h=68[sv-v]; \
  
            [eb]ebur128=video=1:size=720x540:meter=18[eb-v][out1]; \
  
            [av]avectorscope=s=720x540:zoom=1.3:rc=2:gc=200:bc=10:rf=1:gf=8:bf=7[av-v]; \
  
            [sv-v][eb-v][av-v]vstack=3[1c]; \
  
            movie=in.mp4,split=4[v][wf][wfc][vs]; \
  
            [wf]waveform=m=1:d=0:r=0:c=7[wf-vus]; \
  
            [wf-vus][v]scale2ref=iw:1220-ih[wf-va][sig]; \
  
            [wf-va]setsar=1[wf-v]; \
  
            [wfc]waveform=m=0:d=0:r=0:c=7,scale=610x610,setsar=1[wfc-v]; \
  
            [vs]vectorscope=m=color3:g=color,scale=610x610,setsar=1[vs-v]; \
  
            [sig][wf-v]vstack[2c]; \
  
            [wfc-v][vs-v]vstack[3c]; \
  
            [1c][2c][3c]hstack=3,scale=1920:-1[out0]"

  I’d like to change it to that style - I’m not yet allowed to post images directly in this question, so I need to link it :

  Link to image how I’d like the layout to be

  I’d like to have the video shown in 1920x1080 (keeping aspect ratio, downscale if necessary).

• ffmpeg, HLS options, ffmpeg components for dummies ? [closed]

  10 juin 2013, par Vetal

  I am trying to make some HLS encoding with ffmpeg

  After playing a lot (in Ubuntu 12.04) with ffmpeg I realized I do not understand basic questions.

  How to make a ffmpeg "by the book" ?

  I've started a "sudo apt-get install ffmpeg"

  I finished with a manual install :

  http://ffmpeg.org/trac/ffmpeg/wiki/How%20to%20quickly%20compile%20FFmpeg%20with%20libx264%20%28x264,%20H.264%29

  Latter needed a following command to get rid of build error, where I spent quite some time with :

  sudo apt-get remove ffmpeg x264 libx264-dev

  So, now I've got to the documentation for HLS : http://ffmpeg.org/ffmpeg-all.html#hls-2

  Trying to run some stuff :

  ffmpeg -i 3.mp4 hls.m3u8

  Error : Unable to find a suitable output format for 'hls.m3u8'

  ffmpeg -i 3.mp4 -hls_time 10 hls.m3u8

  Error :
  Unrecognized option 'hls_time'
  Failed to set value '10' for option 'hls_time'

  Anyway, looks like an options specified in different formats, e.g. 'vbsf' vs 'v:bsf', -vcodec and -v:c, etc. etc. Like there are few alternative versions

  After starting with it some time ago, I feel more pessimistic now like I missed some fundametals. Any Ideas for the things above ?

  Thank you

• Fill patterns

  9 juin 2010, par Mikko Koppanen — Imagick, PHP stuff

  My work life has been quite busy lately and I haven’t had a chance to sit down and blog. I have been touring around London and some parts of the northern England consulting and organizing some training here and there. Luckily I have had the chance to do some work on Imagick and the 2.2.0 beta release is getting closer. The internal structure was completely restructured and broken down into several smaller files. During this time Imagick was adapted to follow the PHP Coding Standards more closely. Still a work in progress

  I committed slightly modified version of this example to PHP Manual http://uk.php.net/manual/en/imagick.examples.php page a few days ago. The example illustrates using an image as a part of a named fill pattern. The fill pattern is used to annotate text but the named pattern could also be used to fill any shapes that allow fill to be specified (include circles, ellipses, rectangles, polygons etc etc). The code itself is pretty straight forward : Read the image, create the pattern and use the pattern as a fill.

  The ice formations image is from http://www.photoeverywhere.co.uk/west/winterholiday/slides/iceformations5679.htm.

  php

  < view plain text >

  1. < ?php
  2.  
  3. /* Create a new imagick object */
  4. $im = new Imagick( ’iceformations5679.JPG’ ) ;
  5.  
  6. /* Create imagickdraw object */
  7. $draw = new ImagickDraw() ;
  8.  
  9. /* Start a new pattern called "ice" */
  10. $draw->pushPattern( ’ice’ , 0 , 0 , 50 , 50 ) ;
  11.  
  12. /* Composite the image on the pattern */
  13. $draw->composite( Imagick: :COMPOSITE_OVER, 0, 0, 50, 50, $im ) ;
  14.  
  15. /* Close the pattern */
  16. $draw->popPattern() ;
  17.  
  18. /* Use the pattern called "ice" as the fill */
  19. $draw->setFillPatternURL( ’#ice’ ) ;
  20.  
  21. /* Set font size to 52 */
  22. $draw->setFontSize( 52 ) ;
  23.  
  24. /* Annotate some text */
  25. $draw->annotation( 5, 50, "Hello World !" ) ;
  26.  
  27. /* Create a new canvas and white image */
  28. $canvas = new Imagick() ;
  29. $canvas->newImage( 310, 70, "white" ) ;
  30.  
  31. /* Add black border around the resulting image */
  32. $canvas->borderImage( ’black’, 1, 1 ) ;
  33.  
  34. /* Draw the ImagickDraw on to the canvas */
  35. $canvas->drawImage( $draw ) ;
  36.  
  37. /* Set the format to PNG */
  38. $canvas->setImageFormat( ’png’ ) ;
  39.  
  40. /* Output the image */
  41. header( "Content-Type : image/png" ) ;
  42. echo $canvas ;
  43.  ?>

  And the result is here :