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• ffmpeg -i with -strftime

  7 avril 2020, par DeJoker

  I have a folder with a lot of pngs labeled as "%d_%m_%y.png"
I would like to turn those pngs to one gif file.

  



  ffmpeg -i %d_%m_%y.png output.gif and ffmpeg -strftime -i %m_%d_%y.png output.gif

  



  I cant seem to find any examples of this in the ffmpeg docs as well

  


• 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;