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• Working with FFMPEG / Splicer and C#

  8 novembre 2016, par fauvent

  I have been trying to develop a C# app for a long time now which is intended to run on a server. It takes info from a data base and makes a video with it. I have been using libraries for that porpuse (Aforge). But now it looks like I HAVE to use FFMPEG to combine 5 mp4 in one. My question would be :

  1. Do I have to "execute" the exe file from the download to make it work ? Or I can simply use the dll like the other libraries (like Aforge) ?

  2. FFMPEG looks very complicated to me. I have been trying to use Splicer insted. There is a very nice and clean example that I would love to use. But I can’t get Splicer to work. I am using VS 13. How exaclty I get Splicer working ? Adding the dlls to the "debug folder" then just adding the reference ? If so which dlls ?

  This is my code so far. It does not show any errors but it does not do anything (I added the reference and the splicer.dll to my project)

  using System;
  
  using System.Collections.Generic;
  
  using System.ComponentModel;
  
  using System.Data;
  
  using System.Drawing;
  
  using System.Linq;
  
  using System.Text;
  
  using System.Threading.Tasks;
  
  using System.Windows.Forms;
  
  using Splicer;
  
  using Splicer.Renderer;
  
  using Splicer.Timeline;
  
  
  
  namespace MergeVideos
  
  {
  
      public partial class Form1 : Form
  
      {
  
          public Form1()
  
          {
  
              InitializeComponent();
  
          }
  
  
  
          private void Form1_Load(object sender, EventArgs e)
  
          {
  
  
  
              string firstVideoFilePath = @"C:\file1.avi";
  
              string secondVideoFilePath = @"C:\file2.avi";
  
              string outputVideoPath = @"C:\output.avi";
  
  
  
              using (ITimeline timeline = new DefaultTimeline())
  
              {
  
                  IGroup group = timeline.AddVideoGroup(32, 720, 576);
  
  
  
                  var firstVideoClip = group.AddTrack().AddVideo(firstVideoFilePath);
  
                  var secondVideoClip = group.AddTrack().AddVideo(secondVideoFilePath, firstVideoClip.Duration);
  
  
  
                  using (AviFileRenderer renderer = new AviFileRenderer(timeline, outputVideoPath))
  
                  {
  
                      renderer.Render();
  
                  }
  
              }
  
  
  
          }
  
      }
  
  }

  Thanks in advance !

• Annual Release of External-Videos plugin – we’ve hit v1.0

  13 janvier 2017, par silvia

  This is the annual release of my external-videos wordpress plugin and with the help of Andrew Nimmolo I’m proud to annouce we’ve reached version 1.0 !

  So yes, my external-videos wordpress plugin is now roughly 7 years old, who would have thought ! During the year, I don’t get the luxury of spending time on maintaining this open source love child of mine, but at Christmas, my bad conscience catches up with me – every year ! I then spend some time going through bug reports, upgrading the plugin to the latest wordpress version, upgrading to the latest video site APIs, testing functionality and of course making a new release.

  This year has been quite special. The power of open source has kicked in and a new developer took an interest in external-videos. Andrew Nimmolo submitted patches over all of 2016. He decided to bring the external-videos plugin into the new decade with a huge update to the layout of the settings pages, general improvements, and an all-round update of all the video site APIs which included removing their overly complex SDKs and going straight for the REST APIs.

  Therefore, I’m very proud to be able to release version 1.0 today. Thanks, Andrew !

  Enjoy – and I look forward to many more contributions – have a Happy 2017 !

  —

  NOTE : If you’re upgrading from an older version, you might need to remove and re-add your social video sites because the API details have changed a bit. Also, we noticed that there were layout issues on WordPress 4.3.7, so try and make sure your WordPress version is up to date.

• sharedarraybuffer error in edge and firefox but not in chrome when uploading with ffmpeg in nodejs

  29 juillet 2021, par Juliette

  I have the code below in React.js that uses ffmpeg to convert files :

  


  import { createFFmpeg, fetchFile } from '@ffmpeg/ffmpeg';

  const doTranscode = async () => {
    setMessage('Loading ffmpeg-core.js');
    await ffmpeg.load();
    setMessage('Uploading file');
    ffmpeg.FS('writeFile', filename, await fetchFile(file));
    await ffmpeg.run('-i', filename, 'test.wav');
    setMessage('Upload to manager complete. Sound file will be available and playable on the manger within 1-2 minutes.');
    const data = ffmpeg.FS('readFile', 'test.wav');
    setAudioSrc(URL.createObjectURL(new Blob([data.buffer], { type: 'audio/wav' })));

    var file_name = prompt('What would you like to call this file?');

    if (!file_name) {
      file_name = Date.now()
    }
    
    (async function(){
      let output = await getSoundID(customer_id, file_name);
      let sound_id = output.data;
      var bucket_file = new File([new Blob([data.buffer], { type: 'audio/wav' })], "sounds/" + customer_id + "/" + sound_id + ".wav");
      uploadFileToS3(bucket_file);
      updateSoundData(sound_id, customer_id);
    })();
  };

  useEffect(() => {
    if (file) {
      doTranscode()
    }
  }, [file])


  


  The code above works great in Chrome and the files are successfully converted. However, when I bring it to Firefox or Edge I get this error Unhandled Rejection (ReferenceError): SharedArrayBuffer is not defined.

  


  I looked up this issue and they said I need to modify my headers to include this :

  


  You need to set two response headers for your document:

Cross-Origin-Opener-Policy: same-origin Cross-Origin-Embedder-Policy: require-corp


  


  Not sure how I would this in my JS code ?

  


  Would love to hear what you guys think.