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• How to generate video preview thumbnails for use in VideoJS ?

  30 octobre 2019, par steven

  I moved over to VideoJs (html5) and need to figure out how to generate thumbnails for the seekbar. I have tried using videojs-thumbnails, however that requires having a preloaded vtt file with a sprite image. I’m trying to figure out a way to automatically load thumbnails for a regular mp4 (h264) file. Flowplayer was able to do this with it’s own videos, trying now to figure out how to do it with VideoJs.

  I was hoping their was some plugin that I missed that was capable of doing this, but have yet to find it. The best I figured out was to extract the thumbnails from the mp4 file, combine it into a sprite image, and use the #xywh attribute.

  If there is no plugin that automatically does this in VideoJS, what command line program can I use to create a VTT file with sprite image on Ubuntu ? I am dealing with lots of video files, so doing it manually just isn’t feasible.

  My video player :

     <div class="video_player_js" style="width:auto; height:auto;">
  
    <video class="vjs-16-9 video-js vjs-default-skin vjs-big-play-centered" controls="controls" preload="auto" width="auto" height="auto" data-setup="{&quot;fluid&quot;: true}">
  
      <source src="test.mp4" type="video/mp4"></source>
  
      <track kind="metadata" src="thumbnails.vtt"></track>
  
      <p class="vjs-no-js">To view this video enabled Javascript.</p>
  
    </video>
  
  </div>

  Sample vtt file :

  WEBVTT
  
  
  
  00:00:00.000 --> 00:00:03.000
  
  thumbnails.jpg#xywh=0,0,120,68
  
  
  
  00:00:03.000 --> 00:00:06.000
  
  thumbnails.jpg#xywh=120,0,120,68
  
  
  
  00:00:06.000 --> 00:00:09.000
  
  thumbnails.jpg#xywh=240,0,120,68

• Use `peerDependencies` for jQuery

  21 février 2021, par mpdude

  Use `peerDependencies` for jQuery
  Would it make sense to specify `jquery` as a `peerDependency` to make sure it matches the version of jQuery the main project installs ?
  

• Failed to find two consecutive MPEG audio frames [closed]

  3 décembre 2024, par matrixebiz

  I'm receiving this error trying to download/convert an m3u8

  


  [mp3 @ 000001c8f5112200] Format mp3 detected only with low score of 1, misdetection possible!
[mp3 @ 000001c8f5112200] Failed to find two consecutive MPEG audio frames.
[in#0 @ 000001c8f5111f40] Error opening input: Invalid data found when processing input


  


  Any way to fix this in my ffmpeg command line ? Also, playing the stream in VLC and other apps shows this in the path /%EF%BB%BF for some reason.
VLC is unable to open the MRL 'file :///C :/Temp/%EF%BB%BF'. Check the log for details. Then it will play the actual video.

  


  Do i need to change the beginning of the m3u8 ?
#EXTM3U
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=1000,RESOLUTION=640x360,

  


  Even if I remove it and just leave the URL that is inside the m3u8, will still display the %EF%BB%BF which I need to stop from happening

  


  EDIT : Adding the PowerShell script I'm using to output my file :

  


  function Replace-FileText
{
    [CmdletBinding()]
    Param
    (
        $File1,
        $File2,
        $File1StartAnchor,
        $File1EndAnchor = "$",
        $File2StartAnchor,
        $File2EndAnchor = "$"
    )
    
    #Escape the regex meta characters, this assumes literals are used in the input
    $File1StartAnchorEscaped = [System.Text.RegularExpressions.Regex]::Escape($File1StartAnchor)
    $File2StartAnchorEscaped = [System.Text.RegularExpressions.Regex]::Escape($File2StartAnchor)

    if ($PSBoundParameters.ContainsKey('File1EndAnchor'))
    {
        $File1EndAnchorEscaped = [System.Text.RegularExpressions.Regex]::Escape($File1EndAnchor)
    }
    else
    {
        $File1EndAnchorEscaped = $File1EndAnchor
    }

    if ($PSBoundParameters.ContainsKey('File2EndAnchor'))
    {
        $File2EndAnchorEscaped = [System.Text.RegularExpressions.Regex]::Escape($File2EndAnchor)
    }
    else
    {
        $File2EndAnchorEscaped = $File2EndAnchor
    }


    if ((Get-Content $File1 -Raw) -match "$File1StartAnchorEscaped(.*?)$File1EndAnchorEscaped")
    {
        Write-Host "Found the following string in between the anchors in $File1 :$($Matches[1])"
        $TextToInject = $Matches[1]
    }
    else
    {
        Write-Host "Could not find the Start and end Anchors in $File1"
        return
    }
 
    if ((Get-Content $File2 -Raw) -match "$File2StartAnchorEscaped(.*?)$File2EndAnchorEscaped")
    {
        Write-Host "Found the following string in between the anchors in $File2 :$($Matches[1])"
        $TextToReplace = $Matches[1]
    }
    else
    {
        Write-Host "Could not find the Start Anchor in $File2"
        return
    }
 
    (Get-Content $File2 -Raw) -replace $TextToReplace,$TextToInject | Out-File $File2 -NoNewline
}
 
 
Replace-FileText -File1 'C:\EQDA\File1.txt' -File2 'C:\EQDA\File2.txt' -File1StartAnchor 'two' -File1EndAnchor '"' -File2StartAnchor 'four'
Replace-FileText -File1 'C:\EQDA\File1.txt' -File2 'C:\EQDA\File2.txt' -File1StartAnchor 'server-' -File1EndAnchor '-name' -File2StartAnchor 'server-' -File2EndAnchor '-name'