I've put together some scripts, a TenFourFoxBox, youtube-dl and mplayer and come up with tools to let you watch and/or download Youtube videos at any quality on any Mac that runs Tiger or Leopard - and that includes G3s! All the components are in the dropbox link - the only other requirement is that Python 2.7 is installed, you can do this independently but the best way is to install PPC Media Center as this installs it for you (and keeps youtube-dl up to date also). Whilst not as refined as PPC Media Centre it does offer video streaming via mplayer which is far more efficient than Quicktime and fewer clicks to get there. It's not as slick as SMtube either but it works without installing xcode and macports and it works on Tiger too. How to install: On Leopard Drag mplayer into Applications - I've supplied two versions of mplayer, the later one (svn version) is the best and most efficient but doesn't agree with some machines (I couldn't get it working on my G3 imac). Remember to rename the svn version to mplayer. Drag 240, 360, 720 and YT into any folder you wish and from there drag to the right hand side of the Dock to make shortcuts. 240 downloads 240P video, 360 downloads 360P and 720 is 720P. YT is to stream the video only. Make a folder in Movies called Youtube - this is the default download folder for 240, 360 and 720 - but you can edit these scripts to point to any folder you wish. Drag TonVid into Applications and make a shortcut in the Dock - this is a TenFourFoxBox app so TenFourFoxBox must already be installed. On Tiger Exactly as above but with one extra step. From Finder menu: Go/Go to Folder and type /usr/local/bin from the Finder window locate youtube-dl and copy it to the Desktop. From Finder menu: Go/Go to Folder and type /bin in the Finder window, drag youtube-dl from the Desktop into it - you will probably have to type your user password to do this. How to use: Streaming Launch TonVid and search for your chosen video and right click on it and copy link location. (Note, TonVid default background is white - scroll to the preferences to change colours and layout). To stream the video, click on the YT icon in the dock - a terminal window will open and youtube-dl will grab the URL and pipe the video into mplayer. The default quality is 240P which is ideal for G3s and G4 portables but as I'll explain later, you can change the streaming quality to 360 or 720. Note there is a delay while youtube-dl does it's stuff before launching mplayer - for short videos it's quicker to download the files and play from the folder. Whilst the video is streaming mplayer can be controlled by keyboard shortcuts: 9 - volume down 0 - volume up command + 0 - half size command + 1 - original size command + 2 - double size space - pause/play cursor right - forward 10 seconds cursor up - forward 1 minute f - full screen esc - quit When the video finishes, mplayer and Terminal will quit. Downloading As before right click on a video and copy the link location, click on the Dock shortcut that corresponds with the quality of video you want. A Terminal window will open and start downloading - when complete, the download folder will open automatically so you can play your file. Customizing the scripts. YT, 240, 360 and 720 can be edited in TextEdit or similar - here you will see the command line options for youtube-dl and mplayer, anyone with experience of command line can then edit away to achieve the result they want. This is YT opened up: youtube-dl -f "best[height <=240]" "$(pbpaste)" -o -|/Applications/mplayer -really-quiet -framedrop -cache 256 - killall Terminal A quick edit would be to change 240 to 360 or 720. I've included the mplayer command list and the youtube-dl commands can be seen here: https://github.com/rg3/youtube-dl/blob/master/README.md I've also included mView and mViewX - these are droplets that can be placed in Applications and the Dock. To use, simply drag a video file onto them and mplayer will launch it - I've found this is essential for 360P video playback on my G3 iMac. mView plays the file at it's full quality while mViewX applies some hard frame dropping to make unplayable files work - particularly useful on G4s that struggle with 720P. I've tested the scripts on: G3 iMac - 500Mhz, 512Mb RAM, Tiger G4 Powerbook 12" 1.33Ghz, 768Mb RAM, Tiger G4 Powerbook 17" 1.67Ghz, 2Gb RAM, Leopard As you can see, 30% CPU for video playback on a 500Mhz G3 is not bad! I'm no coder so this is all rough and ready - maybe someone can refine it further? Oh, and before anyone asks, I tried this with VLC, Quicktime and Coreplayer - only mplayer would do it. Download EDIT: SEE POST 26 FOR UPDATED STREAMING APP (TO PREVENT FAILED WEBM SELECTION) - NOW UPDATED IN DOWNLOAD IN FIRST POST EDIT: REGULARLY PERFORM UDATE CHECK IN TERMINAL - YOUTUBE IS CONSTANTLY CHANGING: youtube-dl -U EDIT: VLC CAN PLAY WITH THIS AS LONG AS IT'S THE LAST VERSION AVAILABLE FOR POWERPC - WHICH I TEND NOT TO USE ON G4S AS IT'S SLIGHTLY LESS EFFICIENT.