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• Youtube-dl and Shell speed

  7 août 2016, par JJ The Second

  So I’ve been experimenting with youtube-dl on Ubuntu 14 recently and I should say downloading is well fast even I have a 1GB Ubuntu LAMP but when it comes to triggering FFMPEG and deleting process hangs for a good time. Even worked with -k but as soon as FFMPEG process is completed, it takes time to respond. I do understand this is a big subject but I’d really like to hear your thoughts, what amazes me is how a website like thisis running in less than a second ? Here is what I have,

  [youtube] UxxajLWwzqY: Downloading webpage
  
  [youtube] UxxajLWwzqY: Downloading video info webpage
  
  [youtube] UxxajLWwzqY: Extracting video information
  
  [info] Writing video description metadata as JSON to: /var/www/html/download/Icona Pop - I Love It (feat. Charli XCX) [OFFICIAL VIDEO].info.json
  
  [download] Destination: /var/www/html/download/Icona Pop - I Love It (feat. Charli XCX) [OFFICIAL VIDEO].m4a
  
  [download] 100% of 2.73MiB in 00:00
  
  [ffmpeg] Correcting container in "/var/www/html/download/title.m4a"
  
  [ffmpeg] Destination: /var/www/html/download/title.mp3
  
  Deleting original file /var/www/html/download/title.m4a (pass -k to keep)

  youtube-dl "http://www.youtube.com/watch?v=UxxajLWwzqY" --write-info-json  --extract-audio --audio-format mp3  -o "/var/www/html/download/%(title)s.%(ext)s"

  I really don’t understand how this is done so fast ? Is there anything I’m missing ?

  Thanks for your time.

• FFmpeg - concat video and image

  15 juin 2020, par AleVasta

  I am trying to concat a jpeg with a mp4, but when I concat both with this commands, the result is a video with the audio starting from the time 00:00:00, I want it to start along with the video in 0:0:10. So basically the idea of imageUrl is to have a sort of cover or presentation.

  



  -loop 1 -t 10 -i ${imageUrl} -i ${videoUrl} -filter_complex "[0:v:0][1:v:0]concat=n=2:v=1:a=0" -r 60 -vn -y -c:a copy -s 640x352 ${outputUrl}


  



  Any idea how I can fix it ? thanks !

  


• use ffmpeg in vba to change video format

  3 juillet 2020, par Iban Arriola

  I want to change the video format of the embedded videos that appears in a presentation. I achieve to export the video file to another folder using the following code :

  



          Dim Finame As Variant
        Dim oApp As Object
        Dim StoreFolder As Variant
        Dim Videoname As Variant
        Dim FileNameFolder As Variant

        MkDir "C:\template\videoZip"

        Set oApp = CreateObject("Shell.Application")
        FileNameFolder = "C:\template\videoZip\"
        Finame = ActivePresentation.Path & "\" & ActivePresentation.Name
        StoreFolder = "C:\template\created_files\"
        oApp.Namespace("C:\template\videoZip\").CopyHere Finame
        Name "C:\template\videoZip\" & ActivePresentation.Name As "C:\template\videoZip\" & ActivePresentation.Name & ".zip"


        oApp.Namespace(FileNameFolder).CopyHere oApp.Namespace("C:\template\videoZip\" & ActivePresentation.Name & ".zip").items

        Dim firstCount As Integer
        Dim lastCount As Integer

        For j = 1 To videoNum
            firstCount = oApp.Namespace(StoreFolder).items.count
            Videoname = "C:\template\videoZip\ppt\media\media" & j & ".mp4"
            oApp.Namespace(StoreFolder).CopyHere Videoname
            lastCount = oApp.Namespace(StoreFolder).items.count
            If firstCount = lastCount Then
                MsgBox "The video has problems loading and it will not be shown (Only mp4 supported)"
            End If
        Next j

        Set objFSO = CreateObject("Scripting.FileSystemObject")
        objFSO.deletefolder "C:\template\videoZip"
    End If


  



  As I said, with this peace of code I can get all the videos that are in the presentation. Now I want to change the format of them. I heard that it is possible using ffmpeg. Other solutions to change format are welcome too.