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Sur d’autres sites (9024)

  • mencoder. Encoding from multiple input image files compatible with web browser (No video support and MIME type) [duplicate]

    23 juin 2020, par iblasi

    I have multiple JPG files that I want to use to make a TimeLapse video compatible with the web browser to upload it on my web page.
Create a video with mencoder from multiple images is explained in some webpages such us here, that shows how to create a video.

    


    ls -Ltr my_Pics/*.jpg >files.txt
mencoder -nosound -ovc lavc -lavcopts vcodec=mpeg4 -o video.avi -mf type=jpeg:fps=4 mf://@files.txt


    


    The video is set with no sound and to have one picture every 250ms (4 fps).
These command lines create an AVI video that I can see correctly with the VLC video tool. However, if I try to open it in a web browser it shows an error :

    


    


    No Video with Supported Format and MIME type found

    


    


    So, based on other similar comments (as here), I tryed to use ffmpeg renaming all my files as ffmpeg requires a number serial format. But it happens the same, that I can see it in VLC but not in the browser.

    


    ffmpeg -r 4 -i ./output/%04d.jpg -vcodec libx264 video.mp4


    


    Based on research made on internet I am quite sure that it is due the the encoding and/or container. I tryed multiple options of codecs nd containers existing on documentation (here) but still not able to find a way to work.

    


    If, once I create the video, I use the VLC tool to manually convert the video to ".m4v" I was able to create a video that the web browser recognizes. But I would like to do it with command lines to automate it.

    


  • How to use ffmpeg in uwp ?

    22 avril 2022, par MrL

    I developed a software with electron. It needs ffmpeg, but when I package it into appx, I won't be able to use ffmpeg.

    


    let FFmpegPath = path.resolve(AppPath, "FFmpeg");
let FFMPEGPATH = path.resolve(FFmpegPath, "ffmpeg");
let FFPROBEPATH = path.resolve(FFmpegPath, "ffprobe");
let FFoption_V = '"'+FFPROBEPATH+'"' + " -i " +'"'+ path.normalize(PATH)+'"' + " -show_streams -select_streams v -of json";
EXEC_V = C_PRO.execSync(FFoption_V);


    


    This is the information I found, but it doesn't seem to work for electron :https://docs.microsoft.com/en-us/windows/apps/desktop/modernize/desktop-to-uwp-extensions

    


    <package xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10">&#xA;  ...&#xA;  <capabilities>&#xA;      &#xA;  </capabilities>&#xA;  <applications>&#xA;    <application>&#xA;      <extensions>&#xA;          &#xA;              &#xA;                  &#xA;                  &#xA;              &#xA;           &#xA;      </extensions>&#xA;    </application>&#xA;  </applications>&#xA;</package>&#xA;

    &#xA;

  • How do I extract video layers from an AVI ?

    14 janvier 2018, par Philosophistry

    I have a Fujifilm FinePix Real 3D W3, and it creates something Fujifilm calls 3D-AVI files. There are pograms to split these 3D-AVI files into separate left-and-right movies, but they involve using GUI-based software on Windows.

    I would rather use a command-line tool like ffmpeg, so that I can automate the process. Does anybody have any suggestions on how to go about doing this ?

    I’ve heard on forums that the 3D-AVI file is simply left and right AVIs on two video layers. I couldn’t see anything in the ffmpeg docs on how to extract these layers.

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