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Other articles (104)

  • Encoding and processing into web-friendly formats

    13 April 2011, by

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • Qu’est ce qu’un masque de formulaire

    13 June 2013, by

    Un masque de formulaire consiste en la personnalisation du formulaire de mise en ligne des médias, rubriques, actualités, éditoriaux et liens vers des sites.
    Chaque formulaire de publication d’objet peut donc être personnalisé.
    Pour accéder à la personnalisation des champs de formulaires, il est nécessaire d’aller dans l’administration de votre MediaSPIP puis de sélectionner "Configuration des masques de formulaires".
    Sélectionnez ensuite le formulaire à modifier en cliquant sur sont type d’objet. (...)

  • Monitoring de fermes de MediaSPIP (et de SPIP tant qu’à faire)

    31 May 2013, by

    Lorsque l’on gère plusieurs (voir plusieurs dizaines) de MediaSPIP sur la même installation, il peut être très pratique d’obtenir d’un coup d’oeil certaines informations.
    Cet article a pour but de documenter les scripts de monitoring Munin développés avec l’aide d’Infini.
    Ces scripts sont installés automatiquement par le script d’installation automatique si une installation de munin est détectée.
    Description des scripts
    Trois scripts Munin ont été développés :
    1. mediaspip_medias
    Un script de (...)

On other websites (9285)

  • FFmpeg: how to make output video has the same width, height, and SAR with input video

    8 December 2014, by user2927954

    I have 2 videos: v1.mp4 and v2.mp4. I want to make a output video that is a copied-v2.mp4 video but has the same width, height, SAR with v1.mp4.
    How could i do that by ffmpeg command?

    I think about the command:

    ffmpeg -i v1.mp4 -i v2.mp4 -filter_complex [1:v]scale={width_of_v1}:{height_of_v1},setsar={sar_of_v1}[out] out.mp4

    but i do not know how to get those values: width_of_v1, height_of_v1, sar_of_v1

  • How can i burn in the current video playback percentage on to a video stream using FFMpeg

    25 May, by David Clews

    I've taken alook at the drawtext filter in ffmpeg and it offers the ability to burn in the current local time directly on to the video stream. I would like this sort of behaviour but for a integer percentage value and the percentage symbol % after the actual value. I don't know if this is possible using FFMpeg on the command line. The formula should be something like.

    


    ceil((t/duration)*100)

    


  • How to increase video quality of combined video and audio file using ffmpeg

    29 June 2022, by jettzeong

    I have a scraper script that I am using which utilizes PRAW module to scrape reddit for media.

    


    To downloaded reddit videos, I have written the code below:

    


            video_url = submission.media['reddit_video']['fallback_url'] 
        audio_url = submission.url + "/audio"
        print('Video: ' + video_url)
        print('Audio: ' + audio_url)
        video = requests.get(video_url).content
        audio = requests.get(audio_url).content
        videoname = "D:\\Bot\\reddit_scrape\\" + submission.id + '_video.mp4'
        audioname = "D:\\Bot\\reddit_scrape\\" + submission.id + '_audio.mp4'
        filename = "D:\\Bot\\reddit_scrape\\" + submission.id + '.mp4'
        
        with open(videoname, 'wb') as handler:
            handler.write(video)
        with open(audioname, 'wb') as handler:
            handler.write(audio)

        os.system(f"ffmpeg -i {videoname} -i {audioname} -map 0:v -map 1:a -c:v copy {filename}")
        os.remove(videoname)
        os.remove(audioname)
        save_to_dict(id = submission.id, ext = filename, txt = submission.title)


    


    What this code does is that it fetches the video and audio seperately from reddit, and combines them via ffmpeg.

    


    However, the video created by this block of code is very blurry and has low resolution.

    


    May I know what kind of argument I can use to make my video file play with higher resolution?

    


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