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Autres articles (83)

  • Submit enhancements and plugins

    13 avril 2011

    If you have developed a new extension to add one or more useful features to MediaSPIP, let us know and its integration into the core MedisSPIP functionality will be considered.
    You can use the development discussion list to request for help with creating a plugin. As MediaSPIP is based on SPIP - or you can use the SPIP discussion list SPIP-Zone.

  • Participer à sa traduction

    10 avril 2011

    Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
    Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
    Actuellement MediaSPIP n’est disponible qu’en français et (...)

  • Script d’installation automatique de MediaSPIP

    25 avril 2011, par

    Afin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
    Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
    La documentation de l’utilisation du script d’installation (...)

Sur d’autres sites (7888)

  • Remove frames based off an image with FFmpeg

    15 novembre 2020, par VEXED

    The Goal : Take a frame or a reference image and use that to decide what frames to keep/remove from an old screen recording (no audio).

    


    To be slightly more specific, I want to match a specific program that is being used in the screen recording. The program is always full screen and could potentially be identified just by a crop of the top left corner.

    


    The Question : What would be the best way to take an image, in particular a cropped corner of say 100px width and height, and look for the same matching corner in a video ? I would want to output those matches to a new file, that or remove the non-matching frames and create a new file with all the frames that match.

    


    What I Know : I know that duplicate frame removal is very possible, and I already use that for screen recordings.

    


    -filter:v mpdecimate, setpts=N/FRAME_RATE/TB \


    


    The above is being used in my screen recording script to remove duplicate frames.

    


    I'm also aware that you can crop using FFmpeg, but I'm not looking to have actual cropped output. I'm only looking to use a crop to find the portion that matches my reference image or reference frame.

    


    ffmpeg -i in.mp4 -filter:v "crop=out_w:out_h:x:y" out.mp4


    


    The above is a basic crop.

    


    The only reference to finding frames by images is this one. It didn't do what I wanted and just produced dark and distorted output. Though I might be understanding what the aim of that post was incorrectly.

    


    Notes : Thanks in advance for any help, this frame/image matching doesn't have to be done while recording, but can be done in post.

    


  • trying to merge 2 video command [duplicate]

    4 octobre 2019, par Vikram Dulgach

    This question already has an answer here :

    I am trying to merge 2 video one has audio and in 2nd video i am adding silent track. but everytime i am trying to merge them it shows me these error. I am using 2 command in both ti give me same erro.

    String [] merge2video={ "-i", video1,"-i", new video2,"-filter_complex", "[0:v]scale=1280x720,setpts=PTS-STARTPTS[v0];[1:v]scale=1280x720,setpts=PTS-STARTPTS[v1];[v0][0:a][v1][1:a]concat=n=2:v=1:a=1", "-map", "[v]", "-map", "[a]","-preset" ,"ultrafast" ,"-crf" ,"30", sharevideo};

    String [] merge2video= "-i", video1,"-i", new video2,"-filter_complex", "[0]setdar=16/9[a] ;[1]setdar=16/9[b] ; [a][b]concat=n=2:v=1:a=1", "-map", "[v]", "-map", "[a]","-preset" ,"ultrafast" ,"-crf" ,"30", sharevideo ;

    [swscaler @ 0xee692000] deprecated pixel format used, make sure you did set range correctly
    [Parsed_concat_4 @ 0xee9255f0] Input link in1:v0 parameters (size 1280x720, SAR 1647:1648) do not match the corresponding output link in0:v0 parameters (1280x720, SAR 1:1)
    [Parsed_concat_4 @ 0xee9255f0] Failed to configure output pad on Parsed_concat_4
    Error configuring complex filters.
    Invalid argument

    Help to solve there issue if anybody is there thanks in advance. and sorry for bad english

  • How can I manually extract Metadata from mp4 Videoframes ?

    3 décembre 2020, par bennimueller

    I have a large GoPro Video about 11:44 min. Each second the GoPro records 30 frames with datetime(UNIX) and gps(lat, long) information. So there are round about 21188 frames in my video.

    


    I need to extract the GPS data to bring every single frame to a map. There's a tool called GoProtelemetryextractor (https://goprotelemetryextractor.com/free/). This gives me a csv file with 19800 lines (1 line for each frame). Obviously there are 1400 rows/frames missing in the csv. If I now multiplex the csv with the mp4 in a GIS software, the frames get assigned to wrong "csv frames". I need to match these 19800 frames correctly to the frames in the video by deleting "None metadata frames" out of the video.
I guess the problem is that the goprotelemetry extractor starts writing the csv with the first metadata it finds. And not starting at the first frame and just write "NO METADATA ROWS".

    


    Basically my question is : How can I extract the metadata from each mp4 Frame "manually" to know where the csv "starts" and match video and csv ?

    


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