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• Anomalie #4375 : Tests unitaires en erreur

  24 octobre 2020, par Franck D

  Hello
  Juste pour dire que j’ai refait les tests en php 8 en mettant la proposition de b_b https://core.spip.net/issues/4579#note-2
  Windows 10 (1909)

  Laragon avec :
  Php 8.0.0RC2 (VS16 x64 Non Thread Safe) https://windows.php.net/qa
  Apache 2.4.46 Win64 avec mod_fcgid-2.3.10-win64-VS16 https://www.apachelounge.com/download/
  Mysql 8.0.22 (mysql-8.0.22-winx64.zip) https://dev.mysql.com/downloads/mysql/
  phpMyAdmin 5.0.4 https://www.phpmyadmin.net

  Prefix des tables à l’installation : "test1"
  SPIP 3.3.0-dev GIT [master : 08981b68]

  Cela donne 32 échecs dont le retour de sql_insert_select maintenant, ce n’est pas forcément "grave" dans le sens ou il y en a pas mal, avec https://core.spip.net/issues/4576 donc possible qu’en corrigeant Textwheel, le nombre d’échec se réduise considérablement

• Proprietary codecs on Linux. What is legal ?

  17 octobre 2016, par George Eco

  So, assuming we got a distribution without proprietary codecs installed.
  Let’s take Linux Mint for example. I want to store and playback wav and ogg format sounds, either by using my own software, or by using another developer’s software. So far so good right ?

  Imagine now that we have the following scenario. For some reason, I wanna playback a file that is either an mp4 or mp3 or mpeg or any other format, made by proprietary codecs. Instantly, I will need a codec for these formats.

  I read somewhere that Fluendo sells solutions for "legal codec usage" for linux distros.
  URL of fluendo : http://www.fluendo.com/en/

  So here comes the questions :

  Using VLC and ffmpeg is enough for me to convert a file to an ogg or ogv so I can playback a song or a video using an open format. You can also playback playback files made by proprietary formats. But are VLC and ffmpeg legal to use, to playback such files made by proprietary codecs ? For example, ss VLC codecs okay to be used without paying anyone for mp4 playback ? Is it okay to convert a file from mp4 to ogv ?
  If not, are there any legal and open source and free (as in freedom) codecs around that can solve the issue, or does someone have to pay a product, to be ethically correct, to the developers of the proprietaty codecs ?

  Note that I do not ask for Windows, since codec licenses are included to the price of the operating system. I ask exclusively for a free linux distribution.

• crop filter does not evaluate time in position argument

  25 février 2019, par Sebastian

  I want to take a part of a video (do some things with it, this is left out in my example) and paint it on another part of the video again. The size of the cropped area depends on time (or frame).

  ffmpeg -y -i testsrc.mp4 -filter_complex "[0:v]crop=(40+5*n):80:(5*n):500[fg]; [0:v][fg]overlay=00:00[v]" -map "[v]" -c:v libx264  -movflags +faststart testout.mp4

  So while the position is evaluated correctly, the size is not. How can I achieve such an effect ?

  Edit
  With

  ffmpeg.exe -loglevel debug -y -i testsrc.mp4 -filter_complex "[0:v]sendcmd=f='CropCmd.txt', crop=40:80:500:500[fg]; [0:v][fg]overlay=100:100[v]" -map "[v]" testout.mp4

  and my commandfile containing the following line

  2.0-2.02  [enter] crop reinit w=80:h=40;

  I get a Function not implemented

  [h264 @ 000002bb3e276340] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 2
  
  [Parsed_sendcmd_0 @ 000002bb3c135e00] [enter] interval #0 start_ts:2.000000 end_ts:2.020000 ts:2.000000
  
  [Parsed_sendcmd_0 @ 000002bb3c135e00] Processing command #0 target:crop command:reinit arg:w=80:h=40
  
  [Parsed_sendcmd_0 @ 000002bb3c135e00] Command reply for command #0: ret:Function not implemented res:
  
  [Parsed_overlay_2 @ 000002bb3c135bc0] n:61.000000 t:2.000000 pos:26992.000000 x:100.000000 xi:100 y:100.000000 yi:100