Fails to download videos from certain URLs

[niyazpk]

Command:

youtube-dl -cit http://www.youtube.com/watch?feature=player_embedded&v=wB3R5Xk2gTY

Result:

[youtube] Setting language
[youtube] watch: Downloading video webpage
ERROR: unable to download video webpage: HTTP Error 404: Not Found
'v' is not recognized as an internal or external command,
operable program or batch file.

This command is working though:

youtube-dl -cil http://www.youtube.com/watch?v=wB3R5Xk2gTY

So I assume it has something to do with the URL params.

[Tailszefox]

This is because of the ampersand in the URL of the video, as well as some other special characters depending on the shell you're using. Your second URL was simpler, that's why it worked with it. To solve that, simply quote your URL:

% youtube-dl -cit "http://www.youtube.com/watch?feature=player_embedded&v=wB3R5Xk2gTY"
[youtube] Setting language
[youtube] wB3R5Xk2gTY: Downloading video webpage
[youtube] wB3R5Xk2gTY: Downloading video info webpage
[youtube] wB3R5Xk2gTY: Extracting video information
[download] Destination: Elon Musk lecture at the Royal Aeronautical Society-wB3R5Xk2gTY.flv
[download]   1.1% of 227.59M at   21.59k/s ETA --:--

On Linux, I'd say it's better to use single quotes but given the error message, I assume you're using Windows, which seems to not take into account single quotes. Double quotes should still do the trick, though.