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  • Librairies et binaires spécifiques au traitement vidéo et sonore

    31 janvier 2010, par

    Les logiciels et librairies suivantes sont utilisées par SPIPmotion d’une manière ou d’une autre.
    Binaires obligatoires FFMpeg : encodeur principal, permet de transcoder presque tous les types de fichiers vidéo et sonores dans les formats lisibles sur Internet. CF ce tutoriel pour son installation ; Oggz-tools : outils d’inspection de fichiers ogg ; Mediainfo : récupération d’informations depuis la plupart des formats vidéos et sonores ;
    Binaires complémentaires et facultatifs flvtool2 : (...)

  • Amélioration de la version de base

    13 septembre 2013

    Jolie sélection multiple
    Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
    Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)

  • Contribute to translation

    13 avril 2011

    You can help us to improve the language used in the software interface to make MediaSPIP more accessible and user-friendly. You can also translate the interface into any language that allows it to spread to new linguistic communities.
    To do this, we use the translation interface of SPIP where the all the language modules of MediaSPIP are available. Just subscribe to the mailing list and request further informantion on translation.
    MediaSPIP is currently available in French and English (...)

Sur d’autres sites (5244)

  • Freeze frames at a time on videos and slow down videos

    24 avril 2020, par Nguyễn Trọng

    Suppose I have an mp4 video with a duration of 60 seconds.

    



    I want to freeze 1 frame at the 10th second and 40th second and then extend them to about 3 seconds.
At the same time I want to increase the speed of the video to 2 times from the 1 to 20 seconds and 2 times the video slow from 30 to 60 seconds.
The video output I received was 3 + 3 + (20 - 1) * 2 + (30 - 20) + (60-30) * 2 = 108 seconds
Is there a way to do it in one statement ?

    



    Thank in advance and sorry for my bad english.

    


  • Font Size Mismatch When Using Fallback Fonts in FFmpeg ASS Subtitles

    6 janvier, par Mostafa Fathi

    I’m facing an issue with font size mismatch in ASS subtitles rendered by FFmpeg when combining English text with Arabic or Persian characters.

    


    Steps to Reproduce :

    


    1.Subtitle File :
Here’s an example of the ASS subtitle file :

    


    [Script Info]
Title: Generated ASS
ScriptType: v4.00+
WrapStyle: 2
ScaledBorderAndShadow: yes
YCbCr Matrix: none
PlayResX: 1920
PlayResY: 1080

[V4+ Styles]
Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding
Style: Default, ABeeZee, 40, &H00FFFFFF, &H000000FF, &H00000000, &H00000000, -1, 0, 0, 0, 100, 100, 0, 0, 1, 1, 0, 2, 10, 10, 10, 1

[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:01.00,0:00:05.00,Default,,0,0,0,,Hello! This is English text.
Dialogue: 0,0:00:05.00,0:00:10.00,Default,,0,0,0,,سلام! This is mixed Arabic/English text.


    


      

    1. Command Used :

      2. 


    


    ffmpeg -i input.mp4 -vf "ass=subtitle.ass" output.mp4


    


      

    1. Screenshots :
Below are two screenshots of the issue :

      2. 


    


    • Text rendered with the main font (ABeeZee) is correct.

    


    


    • Text rendered with the fallback font (Cinema) appears larger/smaller in size.

    


    


      

    1. Debug Logs :

      2. 


    


    [Parsed_ass_0 @ 0xb4000079f04f8210] libass API version: 0x1701000
[Parsed_ass_0 @ 0xb4000079f04f8210] 
[Parsed_ass_0 @ 0xb4000079f04f8210] libass source: commit: 0.17.1-0-ge8ad72accd3a84268275a9385beb701c9284e5b3
[Parsed_ass_0 @ 0xb4000079f04f8210] 
[Parsed_ass_0 @ 0xb4000079f04f8210] Shaper: FriBidi 1.0.13 (SIMPLE) HarfBuzz-ng 8.0.1 (COMPLEX)
[Parsed_ass_0 @ 0xb4000079f04f8210] 
[Parsed_ass_0 @ 0xb4000079f04f8210] Using font provider fontconfig
[Parsed_ass_0 @ 0xb4000079f04f8210] 
[Parsed_ass_0 @ 0xb4000079f04f8210] Added subtitle file: '/data/***/ass_file.ass' (4 styles, 29 events)
[Parsed_ass_0 @ 0xb4000079f04f8210] 
[Parsed_ass_0 @ 0xb4000079f04f8210] fontselect: (ABeeZee, 400, 0) -> /data/***/ABeeZee_regular.ttf, 0, ABeeZee-Regular
[Parsed_ass_0 @ 0xb4000079f04f8210] 
[Parsed_ass_0 @ 0xb4000079f04f8210] Glyph 0x633 not found, selecting one more font for (ABeeZee, 400, 0)
[Parsed_ass_0 @ 0xb4000079f04f8210] 
[Parsed_ass_0 @ 0xb4000079f04f8210] fontselect: (ABeeZee, 400, 0) -> /data/***/Cinema.ttf, 0, Cinema


    


    Question :

    


    How can I ensure that text rendered with fallback fonts has the same size as the main font ? Are there specific settings in FFmpeg or the ASS subtitle format that can address this issue ? Alternatively, is there a way to manually adjust the scaling of fallback fonts in FFmpeg ?

    


  • File input of avformat_open_input in ffmpeg

    28 février 2016, par Justin Chang

    I’m trying to use function avformat_open_input in FFmpeg to open the file which contains Chinese word.

    For example :

    char* file="C:/測試/baby.mp4";
    

    
avformat_open_input(&pFormatCtx, file, NULL, NULL);

    But, it seems to be failed.

    My question is how do I pass the file path which contains Chinese (or other languages except for English) ?

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