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• how to convert a video to H264 video codec format & webm and ogv with watermark via ffmpeg

  5 mars 2015, par ali

  I used this code :

  function convert()
  
  {
  
    exec("$ffmpegPath  -i $inputPath -i $watermark -filter_complex overlay=10:10 $outPath");
  
  }
  
  
  
  convert('test.mp4');
  
  convert('test.webm');
  
  convert('test.ogv');

  This code works...but not in browser !
  I can run output videos via KMPLAYER in desktop (ovg only video - no audio)

  I want to run it on web via videojs.

  mp4 playback with videojs in browsers - audio plays but video is blank.

  I googled and I think I must convert it to h264 format...

  Can somebody change my orginal code to 3 valid codes for h264,webm and ogv ?

• How to combine a .MP4 video with a .WAV audio to create a new .MP4 video using ffmpeg from command line arguments ?

  18 mai 2017, par Ashish

  I want to merge a .WAV audio file with a .MP4 video file to create a new .MP4 video file.

  And i am currently using the following codes to do that :

  ffmpeg -i input_vid.mp4 -i input_audio.wav -vcodec copy -acodec copy output.mp4

  But it is only creating output.mp4 file but no videos embedded with that means if i am playing that output.mp4 file then nothing is playing.
  And i don’t know where i am doing wrong so that it is creating like this.

  I know this type of questions already asked by may persons but that didn’t help me much so if anybody can find where i am doing wrong or how to solve this problem please help me to solve my problem.

• How can I allow my users to combine audio and video tracks for downloading a youtube video ? [closed]

  1er décembre 2023, par Faizan Ahanger

  I have a website which, along a bunch a text, has a embedded youtube videos to play. I want to allow my users to also a be able to download those videos. There are too many videos there to store on my own server and I know that there are already website like y2mate.com and savefrom.net which do this.

  


  I used yt-dlp and using the --print-json parameter I can get the urls for downloading the files but the audio and video tracks are not combined for higher videos. Using ffmpeg seems to be the obvious solution but I don't understand where the videos should be combined. Should I download both needed tracks on my server and combine them before serving it to users ? This seems very inefficient as it take a lot of bandwidth for handling all download requests. There is also this library ffmpeg.wasm which according to them is "a pure WebAssembly / JavaScript port of FFmpeg enabling video & audio record, convert and stream right inside browsers !"

  


  This should work but it will require the users to download a 30MB webapp before they can download any video. This is also not very efficient, especially if they are downloading a video which is only a few MBs in size.

  


  Are these the only two options that I have or is there a better way to do this ?