HVR-3000
Hi all,
I have been attempting to build a linux-tv system using the Haugpage HVR-3000. Now i have been aware of the problems with this card, with regards to the dual frontend. Using the wiki entries as a base, i installed Mythbuntu, and removed it's default cx_88 module, before building my own using the wiki steps. I am using a Via C7 1.5GHz system on a Jetway motherboard, mini ITX, one PCI slot.
So, in the end i can use dvb-tools to get a TV picture (found the BBC channels available in the uk via DVB-T)
Scan finds very little channels, but i do have some BBC channels to test. This would indicate a reception issue i believe. TZAP spits out the constant hex codes i expect.
The problem.
The tv is very slow to update and impossible to watch. I would like to know if this is a driver/software issue or
a hardware issue. During TV playback the processor maxs out at 100%
1. Am i right in assuming that the output from the HVR-3000 (DVB-T) is an MPEG stream, and as such needs very little CPU resources?
2. Am i right in assuming that with the Hardware MPEG decoding ability of the Via C7, very little CPU resources are needed for playback?
3. What tools are available for me to get a measure of signal strength and quality of broadcast, which i believe may be the issue (although dedicated Set Top boxes seem to work fine)?
4. Please share any other comments that may be useful to the setup.
Cheers
Gary
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Quoted 14 lines
The problem.
The tv is very slow to update and impossible to watch. I would like to know if this is a driver/software issue or
a hardware issue. During TV playback the processor maxs out at 100%1. Am i right in assuming that the output from the HVR-3000 (DVB-T) is an MPEG stream, and as such needs very little CPU resources?
2. Am i right in assuming that with the Hardware MPEG decoding ability of the Via C7, very little CPU resources are needed for playback?
3. What tools are available for me to get a measure of signal strength and quality of broadcast, which i believe may be the issue (although dedicated Set Top boxes seem to work fine)?
4. Please share any other comments that may be useful to the setup.
Quoted 2 lines
Cheers
Gary
I run a via SP13000 to watch DVB-T in the UK. But you have to use accelerated playback to get a decent system running rather than relying on the CPU. For this to work you will need the openchrome packages installed (note Fedora 9 this should work out of the box):
http://wiki.openchrome.org/tikiwiki/tiki-index.php?page=Collection+of+contributed+binary+packages
For playback I then use the standard xine rpm from the livna repository, then I use that to "play" a DVB channel using the following:
/usr/bin/xine -V xxmc dvb://BBC ONE
The key here is using -V xxmc to enable the hardware accelerated playback, there are similar options to mplayer to achieve the same effect.
(note in reality I don't do anything on the command line, I just use Freevo with the appropriate setup: http://freevo.sourceforge.net/)
Quoted 1 line
From my experience you MUST get the accelerated playback via XvMC working
to stand a chance of playing mpeg content on a small via system. And you won't get anything working for h.264 high-def content. Your 100% cpu usage indicates that the lack of acceleration support is the problem.
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