Sur d’autres sites (15634)

• Anomalie #3014 : Chaines de langue de "Forums" utilisées dans la "dist"

  24 décembre 2017, par b b

  Pour info, voici les occurrences de chaînes de langue de forum dans la dist à ce jour :

  grep -nHIirF —exclude=*.svn-base — :forum : .
  ./404.html:36 :            [(#ENVfond_erreur|==forum|oui)
  
  <:forum:aucun_message_forum :>
  
  ]
  
  ./article.html:56 :            [
  <:forum:form_pet_message_commentaire :>
  ./inclure/forum.html:17 :                [(#CONFIGforums_titre| !=non|oui)#COMPTEUR_BOUCLE.
  
  ./inclure/forum.html:42 :                        [(#CONFIGforums_titre| !=non|oui)#COMPTEUR_BOUCLE.
  
  ./forum.html:11 :    
  
  ./forum.html:25 :
  
  <:accueil_site :> &gt ; ... &gt ; <:forum:forum :> #ID_FORUM
  
  ./forum.html:28 :                [
  (#TITRE|sinon<:forum:forum :> #ID_FORUM)
  ]
  
  ./forum.html:38 :
  <:forum:forum_avez_selectionne :> #TITRE
  
  ./forum.html:41 :            [
  <:forum:form_pet_message_commentaire :>
  ./breve.html:43 :            [
  <:forum:form_pet_message_commentaire :>
  
  

• Convert 16bit Grayscale PNG to HEVC/x265

  14 février 2021, par Ben Bezos

  I want to convert a 12bit image signal to HEVC for effective compression. Because I need to be able to reconstruct the original 12bit signal, the compression needs to be losslessly reversible. At the moment I have the data as 16-bit PNG files.

  


  My first try was using ffmpeg :

  


  ffmpeg -y -framerate 1 -i input.png -c:v libx265 -x265-params "lossless=1" output.mp4


  


  Unfortunately the output is not reversible. When extracting the image from the mp4, the pixel values are slightly off.

  


  ffmpeg -i output.mp4 -vframes 1 reconstructed.png


  


  Following Answer suggest converting the input to YUV444 first to avoid unexpected behavior by ffmpeg : Lossless x264 compression

  


  I have failed so far to successfully convert my 16bit file to YUV, convert it to x256 and receive a correct reconstruction when decoding.

  


  Is there a straight forward way to convert 16bit images to HEVC ?

  


• Python FileNotFoundError : [Errno 2] No such file or directory : 'ffprobe' on Synology

  24 juillet 2022, par Junn Sorran

  I was making a small python 3.8 script to sort photos and videos according to their metadata on my Synology NAS (working on DSM 7.0), overall it works well on ubuntu but it fails on the NAS with this error :

  


  


  FileNotFoundError : [Errno 2] No such file or directory : 'ffprobe'

  


  


  I've been searching everywhere for help on this issue, I saw this post and tried the solutions but I still got the error on any video I try to read metadata from.

  


  ffmpeg is installed and so are ffmpeg-python and ffprobe-python

  


  Here's my test code :

  


  from datetime import datetime
import ffmpeg

name = "VID_20200130_185053.mp4"
path = "/volume1/photo/phone/DCIM/Camera/"
data_keys = ["DateTimeOriginal", "DateTime", "creation_time"]
file = f"{path}{name}"
print(file)
vid = ffmpeg.probe(file)['streams']
# vid = ffprobe.FFProbe(file).streams
for key in data_keys:
    if key in vid[0]['tags']:
        print(datetime.strptime(vid[0]['tags'].get(key).split('T')[0], "%Y-%m-%d"))