Jon Burgess wrote: > Christoph Anton Mitterer wrote: > >> What do you mean with "these kinds of cards",.. what other kinds of >> cards are there? > > Budget vs full-featured. The budget card has a tuner which provides > the MPEG transports stream for software to decode and display. A full > featured card has the same hardware as a budget card but also includes > an embedded CPU and firmware on the card to decode the MPEG and send > it to a TV-out connector on the card. Ah,.. ok,. so the difference is simply the MPEG decoder (which I could get with an additional card,.. if I should ever need it). An so the only missing thing is the analog TV-out signal, correct? If so, a budget card would be enough for me =) >> And does this now mean,.. that those feature are only >> boradcaster/software dependant? > > The MPEG transport stream is very flexible any allows an almost > infinite combination of multiple audio, video and other data streams. > - stereo audio > - 5.1 audio > - Standard definition video > - HDTV > - Other digital data e.g. electronic program guide. > ... plus many more things. > > All the above depend on the broadcaster sending the appropriate > transmission and you having the appropriate software capable of > decoding the stream. Great =) ... .oO(budget DVB-T card,... I'm waiting for you) ;-) >> Uhm,.. if PCI/PCI-X bus is enough for the amount of data,.. I'd >> prefer this in favour of PCIe (because I could save the PCIe for a >> 2nd videocard). > > The data rate for a full transport stream from a budget card is in the > order of ~30 Mbit/s. For a rough theorectical comparison USB2 manages > 480Mbit/s, PCI ~1000Mbit/s (=132MByte/s). PCI-X and PCIe go even > faster. As you can see, a budget card going flat out doesn't begin to > stretch them. So event with a Dual (!) DVB-T card,... PCI / PCI-X should be really fast enought, ok? > You could attach multiple devices to a single USB2 port using a hub > without wasting a single PCI clot. Yes, but there aren't any Dual DVB-T cards for usb, are there? >> What other non-DVB-T-features could such a card have? > > Some cards also include a composite / S-video analog input to allow > recording from something like an analog camcorder. These streams tend > to be a much higher data rate because they are uncompressed. Hmm I think I wouldn't need that,.. because if I'm ever going to buy a video camera, I'd buy a digital one =) Thx Jon,... you helped me very much :) I'm going to ask Hauppauge and Terratec in the following days for some more data about their upcoming dual DVB-T cards. Then I'll post these information here and ask who finds which card the best. The good thing is that I don't have too look after all those features (surround sound, etc) because you nice guys here explained me that this is only software/broadcaster dependant :-) So I'll only have to pray, that Linux drivers vor my card will be available soon,.. and perhaps,.. that the Hauppauge card is PCI-X 3,3V compatible =) Best wishes, Chris. -------------- next part -------------- A non-text attachment was scrubbed... Name: cam.vcf Type: text/x-vcard Size: 449 bytes Desc: not available Url : http://www.linuxtv.org/pipermail/linux-dvb/attachments/20051001/3286a929/cam.vcf
