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[razzauk]

is it posible to use a usb tv tuner connect to my xbox, ( i have made a usb connection using a joypad port) to using xbmc to tune in the channels?  <

[SpikeMage]

Um...
Wouldn't it make way more sense to just hook it up to the tv?     <

[JayDee]

what would you be able to capture/stream @ 12mbit/s? (usb 1.1)

It will be crappy resolution even if connection is @  100% of the 12mbit. (you get ~9-10mbit out of a usb 1.1 and that is ~1MB/s so you  might see where i am going with that...)  <

[drleephd]

I'm pretty sure with the right cable, xbox supports video-in.

still, somebody has to make the cable and the software to go with it.
maybe a year or two away.  <

[shorty]

JayDee For your information, USB can support a reasonable picture, hauppage make a USB TV tuner (WinTV USB?), supports USB 1 & 2 at the same quality.

OK so quality is not the best, but it is more than acceptable.

But you can, for example fit a decent quality xvid into about 700MB for 120minutes.... which is alot less than 1MB/s

I do not know if this thing does this, but it is possible for hardware to encode/compress the video before sending it into the USB port.

Of course, forgetting all this compression stuff, your screwed with USB 1.1

(Original Poster) Dont expect too much there though, it would be a mammoth task to code support for this device into XBMC, even if the drivers source was open, which it is not.

- Shorty

This post has been edited by shorty: May 10 2004, 07:19 AM <

[JayDee]

The resolution will be something along the lines 320x240 (or 640x480) , but all you're doing is doubling pixels, the actual image data coming down the USB cable is 320x240.

The maximum data transfer rate of the USB bus is 12mb/s (as i stated befor) which is less than 1.5MB/second.
But in real life USB 1.1 has a hard time moving more than half of that.

So what is the problem?

Even at only 320x240, raw 24 bit 25 frame per second video takes up about 5½ MB/s.

You just can't move that down a USB cable.

The solution to this problem is to compress the video at the tuner end and decompress it at the computer end (xbox). For full 25 frame per second PAL TV video, you would have to compress the video by 7:1 or even 8:1

But i have trouble thinking any usb tv tuner does that so that ends you up with about 15 fps.

Then think of that PAL video is 25 fps and that  NTSC is 30 fps.

Just a little more input....
 <

[Jagasian]

I own a hauppauge WinTV PVR USB, and the video and audio quality are good enough.  It would add the one last feature that _everyone_ wants in XMBC: TiVo-like functionality.  It would be even better if it could not only be a personal video recorder, but it could also store the recordings on a remote filesystem (using local harddrive for cache of course).

However, that should definitely be something that isn't even considered until AFTER XMBC goes 1.0.  Still, my point is that USB tuners actually work pretty good.  They aren't nearly as good as PCI based tuner cards or a TiVo... but hey, its an XBOX with very limited expandability options.  <

[doggfather]

Is it possible to stream from my tv tuner to my xbox?

Like I have a few extra channels coming through my tv tuner which arent on my tv, so is it possible to stream the tv tuner over?  <

[shorty]

Not at the moment.

It's theoretically possible, but as i understand it is highly unlikley to be done, at lease in the short to medium term future.

- Shorty

EDIT:: Myth TV support is there, partially..... but that still relies on having a PC with a tuner card attatched and networked to your xbox, there is no support for plugging a USB tuner into the XBOX, and unlikley that there ever will be.

This post has been edited by shorty: Jun 23 2004, 09:17 AM <