The VideoLAN Forums

Hi everyone,
My problem is I downloaded a Youtube video which I can view fine off-line on
Firefox courtesy of Add-On called Download Helper, but I wish to use VLC to watch the video too.

I don't see the same video working with VLC but can hear the music.
It's says its a flv but I can view the video and music fine with
Firefox through the add-on Download Helper. Do I need to convert to something?
I see a technicolor mesh instead of the video and hear the music.

I use a Firefox add called Download Helper to download Youtube video's.
I'm new to both programs (VLC and Download Helper).
I believe Firefox Download Helper saves the files as a HTML document for viewing off-line etc?

Win XP service pack 3
Firefox latest with Download Helper add-on 4.9.21

Thank you for replying

have you used other programs to play the file to eliminate the problems with the video file?

have you used other programs to play the file to eliminate the problems with the video file?

Like a conversion program, no I haven't.

Downloaded a different Youtube video with Download Helper and now I
can see the video but no sound in VLC. (My Youtube audio is fine, volume not muted)

Try this file into other player.If the audio & video is OK then you have a problem with your VLC player.what version you have used?
If not I think its file problem.