| LinHES Forums http://forum.linhes.org/ |
|
| Live TV http://forum.linhes.org/viewtopic.php?f=21&t=23794 |
Page 1 of 1 |
| Author: | sparks [ Tue Jul 16, 2013 3:08 pm ] |
| Post subject: | Live TV |
What are other LinHES users using to watch live tv? Since switching to HD I have had problems with live tv. Right now I am using a set top box connected to a firewire interface. This isn't too bad but sometimes I get screen locks, frame buffer failures, or firewire buss failures. I have tried Hauppauge DCR-2650, a usb device, and a Ceton Infinitv 4, a PCIe device, with very inconsistent results. They record OK but live HDTV usually just results in a frozen frame until live tv exits with a frame buffer failure. I use various Nvidia cards (GT230, GT320, GT720) and VDPAU. CPUs are 2.7 GHz Duo Core (E5400) and an i3. Hardware seems irrelevant since the results are always the same. Maybe I am missing some adjustments somewhere. There are so many options on Mythtv. So many I don't understand. It's been very frustrating so I am asking how others deal with this. sparks |
|
| Author: | RacerX [ Tue Jul 16, 2013 6:39 pm ] |
| Post subject: | Re: Live TV |
First thing I would test is from the command line Code: top This will show how much memory your system is using. For example if you don't have enough physical memory then you system will go to virtual memory off the hd which is way slow. Second, run a test with only live tv running. Don't have it commercial flagging or transcoding. Third, reboot and then test live tv with top up and nothinng else running. Keep in mind that HD is very processor intensive. Fourth, test with Nvidia (VDPAU) and make sure onboard graphics is disabled in bios if you have intel graphcs. |
|
| Author: | sparks [ Wed Jul 17, 2013 1:20 pm ] |
| Post subject: | Re: Live TV |
I tested first using The Science Channel HD. This was using a DCR-2650 USB tuner, 2.7 GHz Core Duo CPU, 4 Gig installed memory. This channel played fine. top showed CPU was over 90% idle, 0 wait, used 1.3 G memory. Switching to Fox Sports, the initial frame hung with CPU showing over 90% idle then eventually dropping to about 20% idle, mythfrontend at 114% , after about 10 seconds and then failed with 'buffer fail' error. Memory was about the same, 1.3G. Part of my question is what are others using to watch live TV? |
|
| Author: | Big boy stan [ Fri Jul 19, 2013 1:10 pm ] |
| Post subject: | Re: Live TV |
Hate to say it but I almost never watch Live TV on the MythTV box. I have had more then my share of experiences similar to what you describe and its just easier for me to switch to the STB connected direct to the TV and bypass Myth altogether. No idea why these issues show up when watching live TV but if you start a recording and jump on 10 seconds later, it work fine. You would think they are both the same process. |
|
| Author: | nbdwt73 [ Sat Jul 20, 2013 4:33 pm ] |
| Post subject: | Re: Live TV |
Sparks, I am running 7.4 with 1 HD Homerun and 2 internal tuners (see signature). I have 2 tuners attached to cable and the other 2 connected to an HD antenna (over the air...). I use my Myth to watch over the air broadcasts (higher HD quality) - don't use Myth to watch cable - and have zero issues. My setup is pretty much out of the box standard. My machines (backend and separate frontend) barely breathe hard... |
|
| Author: | mattbatt [ Sun Jul 21, 2013 11:23 pm ] |
| Post subject: | Re: Live TV |
I notice those problems on channels that I have issues with OTA. For example WESH here in Orlando is broadcasting HDTV in the VHF frequency (old 12) most antennas are optimized to get VHF anymore I have dropouts all of the time. When I'm recording those dropouts in signal just get skipped over, If I try to watch live Myth will slowly grind to a halt. Furthermore I never saw the use in watching live TV. I work odd hours so all of my watching is prerecorded hence why I love LinHES so much. The only thing I will watch on a almost live is Football, Just skip all the boring crap between plays. |
|
| Author: | sparks [ Thu Sep 05, 2013 9:57 am ] |
| Post subject: | Re: Live TV |
I had a breakthrough today. Finally had a cable tech out. He said not only does the cable card have to be authorized but also paired with the device. He finally did it after a few phone calls and I have had a couple hours (so far) of live TV via my Hauppauge DCR2650 on a channels that previously would not play. Much joy. My other tuner, a HD set top box via firewire, will no longer be my default live TV device. I suspect either my cheap firewire card or internal settings in the set top box are the problem there. My firewire bus is always going down. The tech said that cable cards are used so infrequently now that it's hard to find someone who knows how to deal with them, especially in front line customer service. s |
|
| Page 1 of 1 | All times are UTC - 6 hours |
| Powered by phpBB® Forum Software © phpBB Group http://www.phpbb.com/ |
|