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recording (backend) system requirements |
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 Posted: Tue Apr 01, 2008 9:28 am |
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| ronw |
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| Joined: 01 Apr 2008 |
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I picked up a new-in-the-box HD3000 from a friend who never got around to using it.
I would be recording for playback on a laptop, so all I am interested in is setting a record only (backend) PC.
Someone I know is using a VIA C7 800 MHz with a WinTV card for recording, but I get the impression that something more powerful would be needed for use with the HD3000.
What can anyone recommend? |
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| Posted: Tue Apr 01, 2008 10:52 am |
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| rjp |
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| Joined: 27 Feb 2008 |
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| If you're only recording digital signals, the C7 should be just fine - but commercial flagging jobs will be slow. If you're recording analog channels, I'm not sure how well the C7 would handle it. An old Athlon XP 2100+ that I have can handle analog recording at about 40% CPU load. |
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Oh no! You have walked into the slavering fangs of a lurking grue! |
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| Posted: Tue Apr 01, 2008 11:32 am |
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| ronw |
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| Joined: 01 Apr 2008 |
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Thanks.
Um, actually, it was a Via C3, 800 MHz.
Looks like I could get a 1.3 GHz version of the same.
So, I am correct that the HD3000 requires more CPU power for recording than a WinTV PVR 150? |
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| Posted: Tue Apr 01, 2008 4:40 pm |
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| waterhead |
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| Joined: 24 Apr 2005 |
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You may want to go with the larger CPU. The specs for the card call for a 1200MHz CPU.
http://www.pchdtv.com/hd_3000_right_down.html
HD broadcasts are in a form of MPEG, so there is no transcoding involved. It just dumps the program to a file. SD (analog) broadcasts need to be encoded to save as a file, and require more CPU for this.
I would be more concerned about the laptop that you are going to play the files on. I have a Dell Inspiron with a P4 2.8GHz CPU, and it won't display the HD video. That is because it only has Intel onboard graphics. You need nVidia graphics, or maybe ATI MAY work.
Also, HD recordings run around 7GB/hour, so make sure that you have a large hard drive. Recording a football game can use up 28GB, (I pad it 1/2 hour in case of overtime).
I'm not sure how you will be recording and viewing HD. If you are using MythTV, make sure that you select DVB as the type, NOT the pcHDTV3000. This is because the pcHDTV selection will use the V4L drivers instead of the DVB drivers.
Also, make sure that you download the firmware for the card, and put it in the /lib/firmware folder. The driver that the card uses is the cx88-dvb, and you can modprobe it if it fails to load automatically.
That should get you started. Another good way to watch HDTV is with the Kaffeine program. I set up a AverMedia A180 card to use Kaffeine, the process would be the same with the HD3000. If your interested, here is a link to the posts where I give the details.
http://hftom.free.fr/phpBB2/viewtopic.php?p=501#501
Good luck.  |
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_________________
Mythbuntu 8.04
Intel D875PBZ main board
Pentium4 3.06Ghz
1024GB RAM
nVidia 6600GT
pcHDTV HD-3000
Air2PC PCI
MythTV 0.21 |
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| Posted: Wed Apr 02, 2008 10:32 am |
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| ronw |
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| Joined: 01 Apr 2008 |
| Posts: 3 |
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