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• Anomalie #4706 (Nouveau) : safehtml vire des trucs légitimes

  29 mars 2021, par RastaPopoulos ♥

  Il semblerait que safehtml fasse quelque peu de la merde : ça vire des attributs totalement légitimes, par ex des data-truc où on met ce qu’on veut.
  En 3.2 ou 3.3, à corriger dans les deux.

  Par exemple le plugin Intl qui a une fonction d’affichage des montants, utilise le mot "montant" dans des attributs (logique vu que c’est tout l’objet du plugin).

  J’ai bien testé avec juste charger_fonction(’safehtml’, ’inc’) de ce plugin.

  <span class="CodeRay"><span class="local-variable">$safehtml</span>(<span class="string"><span class="delimiter">'</span><span class="content"><span class="montant" data-montant-nombre="100" data-montant-devise="EUR"></span><span class="delimiter">'</span></span>)
  </span></span>
  Télécharger

  Au retour ya plus que :
  

  <span class="CodeRay"><span class="tag">span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">montant</span><span class="delimiter">"</span></span> 
  
  </span></span>

  Et du coup ça affiche l’emoji danger avec le code visible, par exemple dans des affichages du plugin Bank, mais pas que, dès qu’on passe ce HTML à une chaine de langue un truc comme ça.

• Extremely slow rendering time using Moviepy

  15 janvier 2024, par pacorisas

  I'm trying to create the following : two stacked videos (one on top of each other) with subtitles (like those videos you see in tiktok) from an srt file. For this, I'm first taking the top and bottom video and creating a CompositeVideoClip :

  


  clips_array([[video_clip], [random_bottom_clip]])


  


  Then, I'm taking this CompositeVideoClip and using a generator, creating the SubtitlesClip which then I will add to another CompositeVideoClip :

  


  sub = SubtitlesClip(os.path.join(temp_directory, f"subtitles.srt"), generator)
final = CompositeVideoClip([myvideo, sub.set_position(('center', 'center'))]).set_duration("00:02:40")


  


  Lastly, I'm adding some more text-clips (just an small title for the video) and rendering :

  


  video_with_text = CompositeVideoClip([final] + text_clips)
video_with_text.write_videofile(part_path, fps=30,threads=12,codec="h264_nvenc")


  


  Here is the problem. I tried to render a video of 180 seconds (3 minutes) and the video takes up to hour and a half (80 minutes) which is wild. I tried some render settings as you can see like changing 'codec' and using all the 'threads' of my CPU.
I tried to not use so many CompositeVideoClips, I read that when you concatenate those the final render will suffer a lot, but I didn't manage to find a way "not to use" that many CompositeVideoClips, any idea ?

  


  My PC is not that bad. 16GB, AMD Ryzen 5 5600 6-Core , NVIDIA 1650 SUPER.

  


  My goal is to at least bring the render to less than an hour. Right now is like 1.23s/it

  


• How to add dynamic captions with animations on a video in a cross-platform Android & iOS app and export it as a final video ? [closed]

  29 avril, par Danial Qsk

  I'm building a cross-platform mobile app using Flutter (or React Native) where users can :

  


  Add dynamic text captions with animations over a video, similar to TikTok

  


  See these changes in real-time during video playback

  


  Export the video with the animated captions burned into the output (e.g., MP4)

  


  What I’ve implemented so far :

  


  Video playback using video_player in Flutter (or react-native-video).

  


  Captions are rendered using Canvas/UI layer during playback.

  


  Problem : While I can overlay animated text in the UI, I can't figure out how to include these in the exported video. I’m considering using FFmpeg to burn in the captions, but I’m unclear how to integrate it with the animated UI overlays or render them into a final video on both Android and iOS.

  


  What I want to achieve :

  


  Efficient way to render animated text overlays onto a video and export it as a final video file on both Android and iOS.

  


  Maintain good performance for real-time playback and smooth export.

  


  What approaches or processing pipelines could achieve this ?
(For example, rendering the UI layer to an offscreen video, integrating with FFmpeg, or using native rendering techniques.)