YouTube video plays without sound when downloaded

vlc-media-playeryoutube

I have downloaded a few videos from YouTube using IDM (Internet Download Manager) (all MP4).
When I opened the video in VLC media player, a black screen appeared and started flickering. The video just does not start.

What all I things I did:

  1. Updated my VLC.
  2. Reinstalled my VLC.
  3. Downloaded another media player (Wondershare; very very beautiful I must say). It played the video but audio was missing.
  4. converted MP4 to FLV and then played in both players, still no sound.

Its very frustrating as I want to complete my tutorial series asap. FLV files works well, but MP4s fall flat.

What should I do?

Best Answer

I think some of youtube videos are somehow get the video and audio file separated so when you download the video the file itself contain no audio. Try to go back to the site and download the audio file, and insert it to the video. it always have extension .m4a