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Autres articles (106)

  • Other interesting software

    13 avril 2011, par

    We don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
    The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
    We don’t know them, we didn’t try them, but you can take a peek.
    Videopress
    Website : http://videopress.com/
    License : GNU/GPL v2
    Source code : (...)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    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 (...)

  • Contribute to a better visual interface

    13 avril 2011

    MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
    Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community.

Sur d’autres sites (9626)

  • FFMPEG Error initializing complex filters when using watermark [duplicate]

    13 décembre 2019, par Ahmed T

    This question already has an answer here :

    Im trying to convert mp4 file using ffmpeg on windows by using this command ,

    ffmpeg -i 1.mp4 -vcodec libx264 -movflags +faststart -threads 0 -r 25 -g 50 -crf 25 -me_method hex -trellis 0 -bf 8 -acodec aac -strict -2 -ar 44100 -ab 128k -vf subtitles=1.srt:force_style='FontName=Changa,Fontsize=20' -qscale:v 3 -preset veryfast 1z.mp4

    its converted without problem but i need to use png watermark file to be converted with the video bottom right i have tried all options using search but no one works sometimes i got problem for complex rules , im a new with ffmpeg and i dont know how to do it , your help really appreciated .
    Thanks

  • crystalhd : Remove trust_interlaced heuristic

    10 octobre 2016, par Philip Langdale
    crystalhd : Remove trust_interlaced heuristic

    It seems that without all the other 1:1 heuristics, we don’t have
    
a fundamental problem trusting the interlaced flag on output
    
pictures. That’s a relief.
    • [DH] libavcodec/crystalhd.c

  • Speed problems with realtime recording with libavcodec and libavformat

    1er novembre 2022, par WalleyM

    I am trying to use libavcodec and libavformat to write an mp4 video file in realtime using h264. I am using an approach heavily inspired by this answer here This works well as a non-realtime solution however, avcodec_receive_packet() starts running much slower after 20 frames or so (this is usually around the first time it returns success and thus av_interleaved_write_frame() is called for the first time). This is so slow that my writing cannot work in realtime.

    


    Solutions I have tried :

    


      

    • Enabling multithreading on my codec context

      • 


    • Running avcodec_receive_packet() and av_interleaved_write_frame() on a separate thread to my capture from the realtime video source

      • 


    • Changing the gop_size in the video context

      • 


    • Lowering my bitrate in the video context

      • 


    


    Is there anything I'm missing ? Possibly some fundamental rules to capturing video in realtime. I am not very experienced with programming with video.

    


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