Sur d’autres sites (4168)

• Restrict FFmpeg/FFserver stream to logged user

  11 juillet 2018, par Homero Bonomini

  I have a live feed setup with FFmpeg streaming audio/video from a webcam through a FFserver. Also, I have a Apache server running a website with a login page, all on the same machine.

  The question is : how can I protect this live stream over a user authentication, so that my camera doesn’t go public ?

  The goal is to provide the resource over http://myexternalip/camera-for-auth-user, for example. The login routes are working fine, but anyone with the stream link (e.g. http://myexternalip:1099/camera.webm) can watch the stream.

  In the website adding a video element with a local reference, after a user authentication :

  <video controls="controls">
  
  </video>

  obviously fails, since the remote client tries to access the resource on itself. However, I think some sort of local redirect, or maybe don’t use FFServer at all, would meet my needs, but I couldn’t manage to find out how.

• ffmpeg reduce mp4 size errors : 'Unknown encoder libx264' and 'Unable to find a suitable output format for'

  25 juillet 2018, par martins

  I am quite new to ffmpeg and video editing. I try to reduce the size of various mp4 files. I followed a pretty straightforward tutorial (link) and also copy the audio. In Terminal (Mac user) I write :

  ffmpeg -i inputfile.mp4 -c:a copy -c:v libx264 -crf 24 outputfile.mp4

  The error here is : Unknown encoder 'libx264' and even when I omit the ’libx264’ from the code above, it still gives me the following error : [NULL @ 0x7f9a21814c00] Unable to find a suitable output format for '24' 24: Invalid argument

  As long as I know, 24 is a totally valid value for crf. Of course I tried with others (20, 14, 30) and the error is still there.

  I would very much appreciate a bit of guidance. Thanks for your time in advance.

• How to add an album cover to an mp3 stream using FFmpeg ?

  29 décembre 2022, par Daniel LAPIDES

  I'm having a bit of an issue and I'd really appreciate it if I could get some insights.

  



  What I am trying to do is to add an album cover to the mp3 file that will be downloaded from the front-end.

  



  Context

  



  I'm downloading a video stream from YouTube and converting it to mp3 using fluent-ffmpeg.
  
To get the video I use the ytdl npm module.

  



  I then pipe this stream to the front-end.

  



  What I've found

  



  fluent-ffmpeg offers either pipe() or saveToFile().

  



  What I figured is that when I use the saveToFile() function and actually save my stream into an mp3 file, it works, I do get the album cover.

  



  But when I pipe the stream to front-end or even into a file, the song is saved properly into a file but without the album cover.

  



  Here is my code

  



  Back-end (NodeJS)

  



  let video = ytdl(`http://youtube.com/watch?v=${videoId}`, {
  filter: (format) => format.container === 'mp4' && format.audioEncoding,
  quality: 'lowest'
});

let stream = new FFmpeg()
  .input(video)
  .addInput(`https://i.ytimg.com/vi/${videoId}/default.jpg`)
  .outputOptions([
      '-map 0:1',
      '-map 1:0',
      '-c copy',
      '-c:a libmp3lame',
      '-id3v2_version 3',
      '-metadata:s:v title="Album cover"',
      '-metadata:s:v comment="Cover (front)"'
  ])
  .format('mp3');


  



  And then piping it to my front-end.

  



  stream.pipe(res);
stream
  .on('end', () => {
    console.log('******* Stream end *******');
    res.end.bind(res);
  })
  .on('error', (err) => {
    console.log('ERR', err);
    res.status(500).end.bind(res);
  });


  



  Front-end (React)

  



  axios.get(url)
  .then(res => {
    axios(`${url}/download`, {
      method: 'GET',
      responseType: 'blob'
    })
      .then(stream => {
        const file = new Blob(
          [stream.data],
          { type: 'audio/mpeg' });
        //Build a URL from the file
        const fileURL = URL.createObjectURL(file);
      })
      .catch(err => {
        console.log('ERROR', err);
      });
    })
    .catch(err => {
      console.log('ERROR', err);
    });