Sorry, I don't have any links to sites for that kind of stuff.
I just looked briefly at the Osprey cards, and didn't really see anything implying any kind of low level access like the simple cat device> file.ext stuff that the PVR-x50's allow. That's not to say that it won't work though, if it's a linux device, it's entirely possible that you can just cat the device and pipe it to the capture file. I am not familiar with those cards, however, so your mileage may indeed vary.
In my (somewhat limited) experience with consumer-grade video capture, software compression is evil, and multiple streams will make you wish you had hardware compression, but I do not know what your intentions are with the resulting stream. FFMPEG certainly works, but you better have some serious processor power to keep up if you're doing realtime and multiple streams.
Using Knoppmyth really takes the sting out of setting it up. I built a back-end box with 500GB (~220 hours SD), 3 PVR-150 tuners (USA, Cable), and an HD-3000 card (USA, HD-OTA). It makes my 320 hour TiVo jealous. I don't use the Mame/Weather/DVD/Video file features since it just sits in the basement and records stuff. We watch everything but the 1080/720 HD recordings with a Modded XBox (XBMC + xbmcmythtv), the HD stuff is just getting started for us, but we can watch that on the Ubuntu systems temporarily until I get a better front end box for the HDTV.
Overall, Myth is a very serious contender, not to say that it doesn't need some spit and polish here and there. Better cooperation from hardware companies would certainly help too, especially for TV-Out capabilities and Tuner-Chip-Du-Jour companies (I'm looking at you, ATI and Hauppage...) The web interface is fantastic! How many times have you been at work/school/the office and heard about a new show that you might want to see. You can find and schedule that show from your computer anywhere or even your phone (I use a Treo 650).
Being able to convert recorded shows into XviD, Divx, vcd, etc. is extremely handy too, and works with PSPs, iPods, GP2Xs, Treos, etc. I really don't care to pay $1.99 for a show I already recorded just to get it into the right format to watch on an airplane/train/boat.
Making compilation DVD's of the kids cartoons without commercials is great for those long car trips, as is being able to record the decaying laserdiscs and the occasional 8mm video or VHS tape into DVD's with full menus.
With the Hauppage PVR cards, making a recording can be as simple as: #cat/dev/video0 >/home/user/recording.mpg Multiple tuners would be listed as/dev/video1,/dev/video2, etc. and would be completely independent.
There are, or course, one-liner commands for settings inputs or channels. The output file is a standard mpg2 file playable by any modern media player.
Hope that helps you in the right direction. With the Mythtv overhead and schedules etc., it would probably be pretty tough to take over the "middle" layer of Myth, maybe talking directly to the cards would be easier for your particular application?
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I just looked briefly at the Osprey cards, and didn't really see anything implying any kind of low level access like the simple cat device> file.ext stuff that the PVR-x50's allow. That's not to say that it won't work though, if it's a linux device, it's entirely possible that you can just cat the device and pipe it to the capture file. I am not familiar with those cards, however, so your mileage may indeed vary.
In my (somewhat limited) experience with consumer-grade video capture, software compression is evil, and multiple streams will make you wish you had hardware compression, but I do not know what your intentions are with the resulting stream. FFMPEG certainly works, but you better have some serious processor power to keep up if you're doing realtime and multiple streams.
Good luck!
Overall, Myth is a very serious contender, not to say that it doesn't need some spit and polish here and there. Better cooperation from hardware companies would certainly help too, especially for TV-Out capabilities and Tuner-Chip-Du-Jour companies (I'm looking at you, ATI and Hauppage...) The web interface is fantastic! How many times have you been at work/school/the office and heard about a new show that you might want to see. You can find and schedule that show from your computer anywhere or even your phone (I use a Treo 650).
Being able to convert recorded shows into XviD, Divx, vcd, etc. is extremely handy too, and works with PSPs, iPods, GP2Xs, Treos, etc. I really don't care to pay $1.99 for a show I already recorded just to get it into the right format to watch on an airplane/train/boat.
Making compilation DVD's of the kids cartoons without commercials is great for those long car trips, as is being able to record the decaying laserdiscs and the occasional 8mm video or VHS tape into DVD's with full menus.
Just my $0.03 (inflation, you know.)
With the Hauppage PVR cards, making a recording can be as simple as: #cat /dev/video0 >/home/user/recording.mpg /dev/video1, /dev/video2, etc. and would be completely independent.
Multiple tuners would be listed as
There are, or course, one-liner commands for settings inputs or channels. The output file is a standard mpg2 file playable by any modern media player.
Hope that helps you in the right direction. With the Mythtv overhead and schedules etc., it would probably be pretty tough to take over the "middle" layer of Myth, maybe talking directly to the cards would be easier for your particular application?