Do you know any online free youtube video fownloaders, convertors video->audio or even editors?

I found this converter, editor quite handy - This one allows among others also bulk download thumbnails from a youtube video, you download .ZIP file with images from video:

Convert online streamed videos into mp3 audio or download video (1000+ sites supported; NOT Youtube):

This one is ad supported, but allows nice editor, video cropping...

ONLY DOWNLOADERS (but in various video/audio formats: (allows video and also separate audio in .webm)