<snip> > > In addition, if the first is true, would the unit be capable of > > simultaneously streaming MPEG2 data from the tuner TO the PC, while > > receieving an MPEG2 stream FROM the PC and decoding it to > the framebuffer? > > This would really depend whether USB bandwidth is per > direction or per total > of both. Not sure which it is, but I suspect total.
Being a bus, I believe USB bandwidth is shared over all devices. The quoted figure of 1.8 Gb per hour for storage of video for the DEC2000-t (UK version, at least) would suggest a 4Mbit/s video stream, so in theory, two streams should fit into the 12Mbit/s provided by USB 1.1 In practice, I don't know what is considered a high stress level for USB and at what level of saturation it starts to get unreliable. USB 2.0 would definitely have this covered, but the box is limited to 1.1 ; a brief shufty at Hauppauge.de shows their next-gen DEC3000 box alao uses 1.1 (but I couldn't read the feature list, my German is almost nonexistent). The performance of the ARM CPU in the DEC2000 is also of concern, but just guessing at it, I can't believe that a CPU capable of decoding MPEG2 would have any trouble managing one extra memory buffer. -- Info: To unsubscribe send a mail to [EMAIL PROTECTED] with "unsubscribe linux-dvb" as subject.
