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Autres articles (52)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

Sur d’autres sites (6875)

  • Input seeking for frame at specified timestamp with Py-AV

    9 décembre 2019, par neonScarecrow

    I have a project already using Py-AV and am trying to replicate a specific ffmpeg command. The goal is to get a frame roughly around the specified timestamp.

    Here’s the ffmpeg commmand :
    https://trac.ffmpeg.org/wiki/Seeking

    ffmpeg -ss 14 -i https://some_url.mp4 -frames:v 1 frame_at_14_seconds.jpg

    Here’s my code :

        #return one frame around 14 seconds into the movie
    
    target_sec = 14 
    
    container = av.open('https://some_url.mp4', 'r')
    
    container.streams.video[0].thread_type = 'AUTO'
    
    video_stream = next(s for s in container.streams if s.type == 'video')
    
    time_base = float(video_stream.time_base)
    
    target_timestamp = int(target_sec / time_base) + video_stream.start_time
    
    video_stream.seek(target_timestamp)
    
    for frame in container.decode(video_stream):
    
        frame.to_image().save('frame_at_14_seconds.jpg')
    
        break

    Additionally, I have found any documentation about this, but does anyone know if either command (ffmpeg/av.open) is downloading the entire file to a tmp file behind the scenes. I’m looking for a less memory-intensive way to read a frame for every second in an up to 60 second video.

  • Argument error while encoding video in rails

    17 février 2017, par CR7

    I am trying to upload video and convert it into mp4. For conversion I am using the gem carrierwave-video. My configuration as same in the question

    I have installed ffmpeg in my system. But when I upload video the following error occurs.

    VideoFailed to transcode with FFmpeg. Check ffmpeg install and verify video is not corrupt or cut short. Original error: ArgumentError

    When I comment the line

     process encode_video: [:mp4]

    in VideoUploader. It works fine, but conversion is not happening. Is there any issue in passing parameters. Please give your valuable answers

  • Detecting frozen frames in video file using ffmpeg or similar

    16 décembre 2015, par jakkolwiek

    I’m trying to find a way to analyze couple of video files (mov) in order to find files with frozen frames or black screens appearing. I know that using simple command with ffmpeg returns the start/stop point and duration of black screens, unfortunately I can’t find any solution for frozen frames. The video files are rather small and definitely not high quality, but I need to distinguish the broken files apart from good ones. The thing is, it has to be to use as a simple shell command or library in order to use it with Java, Python, Ruby or similar. Any advice is much appreciated !

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