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• Evolution #4103 (En cours) : Autoriser /local/cache-gd2/ et /local/cache-vignette/ dans robots.txt

  27 février 2018, par jean marie

  Pour fournir les images à la "bonne taille", le plugin Métas+ les redimensionne (cf https://zone.spip.org/trac/spip-zone/browser/_plugins_/metaplus/branches/v1/inclure/metasplus.html#L30 ).
  De fait, les images se retrouvent dans /local/. Le soucis, c’est que /local/ est interdits aux robots par robots.txt (pour des questions de perf je crois), donc Twitter chouinne (cf log ci-dessous) alors que c’est le but.

  Le log du validator ( https://cards-dev.twitter.com/validator ) :
  INFO : Page fetched successfully
  INFO : 35 metatags were found
  INFO : twitter:card = summary_large_image tag found
  INFO : Card loaded successfully
  WARN : The image URL http://www.domaine.net/local/cache-gd2/6b/8d4f9ad77b1817e55de4ff171d8565.png?1515680421 specified by the ’twitter:image’ metatag may be restricted by the site’s robots.txt file, which will prevent Twitter from fetching it.

  Il faudrait autoriser /local/cache-gd2/ et sans doute aussi /local/cache-vignette/ comme ça a été fait pour /local/cache-css/ et /local/cache-js/.

  Voir l’échange sur la liste : https://www.mail-archive.com/spip-zone@rezo.net/msg45211.html

• Grab audio samples with ffmpeg and C, error with official example code

  31 août 2020, par nji9

  For dev with mingw-w64 I'm using ffmpeg v. 4.3.1. and also the latest Git version of ffmpeg (Zeranoe's Windows 64 builds).

  


  I get "strange" problems when running the official example code for decoding audio

  


  https://github.com/FFmpeg/FFmpeg/blob/master/doc/examples/decode_audio.c

  


  MP3DirectCut(Lib-bass).mp3

  


  http://www.mediafire.com/file/ozmjjcpwyhhdnr7/MP3DirectCut(Lib-bass).mp3/file

  


  Generates pcm, but outputs :

  


  "Warning: the sample format the decoder produced is planar (s16p).
This example will output the first channel only."


  


  But the output pcm has both channels !??

  


  When recoding the above mp3 to wav with ffmpeg (4.1.4, no error message)

  


  http://www.mediafire.com/file/gcq7ryg43pd57q5/ffmpeg4.1.4.wav/file

  


  and also when recoding the latter to mp3 again

  


  http://www.mediafire.com/file/ij865dkrprn2lta/ffmpeg4.1.4_recode.mp3/file

  


  the example code breaks and produces these error messages :

  


  avcodec_send_packet ()&#xA;from within:&#xA;"[mp2 @ <someaddress>] Header missing"&#xA;and returns error code -1094995529&#xA;(= "Invalid data found when processing input")&#xA;</someaddress>

  


  It produces that error message for literally all other formats
I tried, and also when written with another editor (Audition 3.0).
But all the files play and show fine on all programs I have.

  


  I'm at a lost at this point.
What is going on and wrong here ?

  


• Apple HLS h.264 encoding

  24 novembre 2016, par user3753682

  I know thta this is a legal question, but since this involves ffmpeg and libx264 i am going here

  For using Apple’s HLS or Mpeg Dash video streaming technology, should we pay any royalties to MPEGLA ?

  We use ffmpeg with libx264 to generate the content. ffmpeg and libx264 are free softwares but h.264 and Dash are patented technologies